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专题03状语从句（2）
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目录
01知识脑图·学科框架速建
02考点精析·知识能力全解
【知能解读
01
】
状语从句概述
【知能解读
02
】
时间状语从句用法
【知能解读
03
】
原因状语从句用法
03 攻坚指南·高频考点突破
【重难点突破01】方式状语从句用法
【重难点突破02】地点状语从句用法
04 避坑锦囊·易混易错诊疗
【易混易错01】比较状语从句用法
【易混易错02】“一……就……”多样化表达方式
05 通法提炼·高频思维拆解
【方法技巧】状语从句的省略用法
)
01 状语从句概述
状语从句：状语从句就是一个从句在句中相当于一个副词，表示时间、原因、条件、伴随、结果、让步等。
类型：根据功能，分让步状语从句、条件状语从句、目的状语从句、结果状语从句、时间状语从句、原因状语从句、方式状语从句、地点状语从句、比较状语从句等。
状语从句分类及连接词明细表
从句类型 常见引导词
让步状语从句 though, although, as, whether…or, while, no matter wh-, -ever
条件状语从句 if, unless, once, in case, on condition that, supposing, provided that, for fear that
目的状语从句 so that, in order that
结果状语从句 so that, such that, so…that, such…that
时间状语从句 when, while, as, before, as soon as, the moment, the first time
原因状语从句 because, as, since, now that, in that
方式状语从句 as, as if, as though
地点状语从句 where
比较状语从句 as…as…, than…, the more…the more…
02 时间状语从句用法
1. as, when和while引导的时间状语从句
as强调从句动作与主句动作同时或几乎同时发生，译作“随着”。when从句可以是时间点也可以是时间段，译作“当……时候”。while表示“在……期间”，谓语应用延续性动词。
As the sun rose, the birds began to sing. 太阳升起时，鸟儿开始歌唱。
As children grow older, they become more independent. 随着孩子们长大，他们变得更独立。
When the bell rang, the students rushed out of the classroom.铃声响起时，学生们冲出了教室。
When I was young, I often played in this park. 我小时候经常在这个公园玩。
Please keep quiet while the teacher is speaking. 老师讲话时请保持安静。
While my wife was reading the newspaper, I was watching TV.妻子在看报纸我在看电视。
2. after, before引导的时间状语从句
after接从句，表示“在……之后”; before接从句，表示“在……之前”。有时根据语境翻译作“趁……”，“还没来得及……就”。before常用于It will be+时间段+before，It was +时间段+before…等句型。
He called me after he arrived at the airport. 他到达机场后给我打了电话。
After the rain stopped, a beautiful rainbow appeared in the sky. 雨停后，天空中出现了一道美丽的彩虹。
The sun had risen before we started our journey.我们出发前，太阳已经升起来了。
It will be a few weeks before the new library opens. 新图书馆要几周后才会开放。
It was two hours before the firefighters arrived. 过了两个小时消防员才赶到。
★易错提醒：It was +时间段+before…句型注意与强调句型的不同。
It wasn't long before they found the missing child. 没过多久，他们就找到了那个失踪的孩子。
It was last Monday that we held the meeting. 我们是在上周一开的会。
3. since引导的时间状语从句
since表示“自从……以来”，引导时间状从，从句谓语用一般过去时，常用于It is+时间段+since…句型；从句谓语是瞬时性动词，表示“自从……以来”。
I have lived in this city since I graduated from college.自从大学毕业以来，我就住在这座城市。
It has been three years since we last saw each other. 自从我们上次见面以来，已经过去三年了。
★易错提醒：since从句是延续性动词则表示“自该动作结束以来”。
She hasn’t called me since she lived here. 自从她离开这里（不住在这里）后，就没给我打过电话。
4. till和until引导的时间状语从句
till 和 until 含义相同，都表示 “直到…… 为止”，引导时间状语从句时，主句动作持续到从句动作发生时结束。两者的区别在于：till 多用于口语，until 可用于句首，till 一般不用于句首。
1）肯定句中，其主句谓语动词必须为延续性动词，表示某动作一直延续到某时间为止。
2）否定句中（not... until）：表示 “直到…… 才”，主句常用非延续性动词。
She stayed in the office until she finished all the work. 她一直在办公室待到完成所有工作。
He didn’t apologize to me not until I pointed out his mistake. 直到我指出他的错误，他才向我道歉。
★易错提醒：Not until…位于句首，主句采用部分倒装语序，主句仍然采用陈述语序。
Not until I traveled abroad did I realize the importance of learning English.
直到出国旅行，我才意识到学英语的重要性。
5. 名词短语引导的时间状语从句
every/each time…每次next time…下次the first/last time…第一次/最后一次the minute/instant/second…一……就后面直接跟名词，构成时间状语从句。
I’ll remember to call you next time I’m in town. 下次我进城时，会记得给你打电话。
The first time I traveled abroad, I felt both excited and nervous. 我第一次出国旅行时，既兴奋又紧张。
He called me the instant he arrived at the station. 他一到车站就给我打了电话。
★易错提醒：every/each time…, next time…, the first/last time…, the minute/instant/second 等短语用作连词，名词后边不能接when等词。
The minute she walked in, the phone rang. 她一进门，电话就响了。
The last time we met, we didn’t say goodbye properly. 我们最后一次见面时，没有好好道别。
【跟踪训练】在空白处填1个适当的单词或括号内单词的正确形式。
1．________ he grew older, he became less active.
2．Not __________we succeed in letting wildlife live in peace can we smile in relief.
3．Alice recognized Tom __________ instant she saw him.
4．It will be several years __________ the full impact of the recent technological advancements in artificial intelligence is fully understood.
5．— Jack, where is Tom
— Sorry, I don’t know. But I will tell him that you want to see him __________ moment he comes back.
6．John thinks it won’t be long __________ he is ready for his new job.
7．I was informed that it will be eight months __________ a rescue mission arrives from Earth.
8．I have worked in this school__________I graduated from Peking University.
9．Please don’t talk so loudly __________ others are working.
10．You can only imagine how travellers felt __________ they saw the oasis of Dunhuang ahead of them.
03原因状语从句的用法
1.because引导的原因状语从句
because通常用于回答why引出的疑问句，语气最强，除特别强调外，该从句一般位于主句后面。
They didn’t buy the house because it was too far from the city.他们没买那栋房子，因为它离市区太远。
He was hungry, because he didn’t eat breakfast. 他饿了，因为没吃早餐。
2.as引导的原因状语从句
as引导的原因状语从句多位于主句之前，通常可以和since换用，as语气稍弱。
As the weather was fine, we decided to have a picnic by the lake. 因为天气好，我们决定去湖边野餐。
As we’re both free today, why not go to the museum 既然我们今天都有空，为什么不去博物馆呢？
3.since引导的原因状语从句
since表示人们已知的事实，不许强调的原因，故常译为“既然……”，通常位于主句前，相当于now that。
Since everyone is here, let’s start the meeting. 既然大家都到了，我们开始开会吧。
Since the project is finished, we can celebrate now. 由于项目已经完成，我们现在可以庆祝了。
4.Now that等原因状语从句
in that“因为；基于……的理由”，可以和because换用，多用于正式文体，总是位于主句之后。Seeing that/Considering that/Given that…表示“鉴于，考虑到”，通常用于非正式文体。
He is not suitable for the job in that he lacks relevant experience. 他不适合这份工作，因为他缺乏相关经验。
Now (that) you are grown up, you should not rely on your parents. 既然你长大了， 就不应该依靠你的父母了。
Considering (that) everybody is here, let’s begin our discussion. 既然大家都到了， 我们就开始讨论吧。
Seeing (that) he refused to help us, there’s no reason that we should now help him. 他既然曾经拒绝帮助我们，
【跟踪训练】在空白处填1个适当的单词或括号内单词的正确形式。
1．Enjoying a fresh morning is important ________ it can set the mood for the rest of the day.
2．________ (give) that they’re inexperienced, they’ve done a good job. (所给词的适当形式填空)
3．Now ________you have finished your work, you’d better have a rest.
4．________ everyone is here, let's begin our class.
5．We listened eagerly, ________ he brought news of our families.
6．________ that we are all part of the global village, everyone becomes a neighbour.
7．________you have already known the truth, I don’t need to explain it again.
8．He was late for the meeting in________ his car broke down on the way.
9．________ you can’t answer the question, I’ll ask someone else.
10．Many students lost marks in the exam simply ________ they didn’t read the questions carefully.
01方式状语从句用法
1. as引导的方式状语从句
as引导的方式状语从句通常位于主句后，意思是＂正如……＂，＂就像＂，多用于正式文体。
Leave the things as they are. 别动这些东西
You must try to hold the tool as I do.你必须像我这样拿工具
Always do to the others as you would be done by. 你希望人家怎样待你，你就要怎样待人。
2. as if/as though引导的方式状语从句
as if/as though引导的方式状语从句谓语多用虚拟语气，表示与事实相反，常译作＂仿佛……似的＂。
He looks as if he is angry. 他看上去好像生气了。
It looked as if there would be an exciting race.看来要有一场激动人心的比赛。
He stared at me as if seeing me for the first time. 他目不转睛地看着我，就像第一次看见我似的。
【跟踪训练】在空白处填1个适当的单词或括号内单词的正确形式。
1．Football _________ we know it today started in Great Britain, where the game was given new rules.
2．The kids were very friendly with her and even looked up to her as _________ she were their own mother.
3．What we are concerned about is how we can finish the task in two weeks_________ planned.
4．Just _________ a single word can change the meaning of a sentence, a single sentence can change the meaning of a paragraph.
5．We’d better leave things _________ they are until the police arrive, which helps them investigate the case.
02地点状语从句用法
where既可引导定语从句，也可引导地点状语从句。where引导定语从句时，从句前应有一个表示地点的名词作先行词，where可替换成“介词+ which'”；而状语从句前则无先行词。
They should go where they are needed most.他们应该去最需要他们的地方。
She lives where the climate is mild all year round. 她住在气候终年温和的地方。
【跟踪训练】在空白处填1个适当的单词或括号内单词的正确形式。
1．The flowers grow best _________ there is enough sunlight.
2．Located _________ the Belt meets the Road, Jiangsu will contribute more to the Belt and Road construction.
3．He always parks his car _________ he can see it from the window, just to make sure it’s safe.
4．Mohammed Rezwan saw opportunity_________ others saw only disaster.
5．Today, the USS Arizona lies _________ it sank: in the middle of the Pacific Ocean.
01 比较状语从句用法
1. as…as…引导的原级比较状语从句
as…as…引导的原级比较状语从句，第一个as是副词，第二个是连词，中间接形容词、副词原级。也可以是as+形容词+a(n)+名词+as结构。否定句中，可以替换为not so…as…。
The weather today is as hot as it was yesterday. 今天的天气和昨天一样热。
He doesn’t study as carefully as his sister. 他学习不如他妹妹认真。
2.than引导的比较状语从句
形容词/副词比较级+than…结构是常用比较级结构。
This problem is more difficult than I expected. 这个问题比我预期的更难。
He speaks English more fluently than he writes it. 他说英语比写英语更流利。
This movie is not more interesting than the one we saw yesterday. 这部电影不比我们昨天看的那部更有趣。
3.the+比较级+主语+谓语，the+比较级+主语+谓语
前半句是从句，后半句是主句, 在非正式语境中，有时可省略主语和谓语，直接用“the + 比较级，the + 比较级”。
The fewer mistakes you make, the higher score you will get.你犯的错误越少，得分就会越高。
The colder it gets, the more I want to stay at home. 天气越冷，我就越想待在家里。
【跟踪训练】在空白处填1个适当的单词或括号内单词的正确形式。
1．It’s true; the _________ (old) I get, the more I feel time has wings.
2．Do foreigners not understand British humor or are the British just not so funny_________ they think they are
3．The volunteers are no longer the same young men _________ they were ten years ago.
4．We’re doing everything we can to make things as easy for you _________ we can.
5．The more we know each other, the _________ (well) we understand each other.
6．Some young girls think the _________ (slim) they are, the more attractive they will look.
7．Scientists have collected more data _________ expected to prove the theory.
8．Building a skyscraper in the 21st century is much easier_________ it used to be.
9．The more we acknowledge the outstanding universal value of our heritage sites, the_________ (likely) we are to treat them with respect.
10．When it opens in 2023, it should be able to produce more energy_________it uses.
02 “一……就……”多样化表达方式
1.标准型：as soon as引导时间状语从句，注意“主将从现”用法。
As soon as the bell rings, the students will rush out of the classroom.铃一响，学生们就会冲出教室。
2.名词型：the moment/ minute/ instant/ second+从句引导时间状语从句。
The moment she saw the gift, she knew it was from him. 她一看到礼物，就知道是他送的。
3.副词型：immediately /directly/ instantly形式上是副词，其实这里转化为从属连词，引导时间状语从句。
Immediately he finished speaking, the audience broke into applause. 他一讲完，观众就鼓起掌来。
4.介词型：on/upon后接名词或动名词，构成时间状语。
On arriving at the station, he realized he had lost his ticket. 一到车站，他就发现票丢了。
At the sight of the snake, she screamed. 她一看到蛇就尖叫起来。
5.倒装型：no sooner…than.../hardly… when … 句式不同但意思相同，都表示“刚一……就……”，注意主句用过去完成时，且部分倒装（前提是no sooner/hardly位于句首）。
No sooner had she left than he regretted what he said. 她刚离开，他就后悔自己说的话了。
Hardly had I opened the door when the phone rang. 我刚打开门，电话就响了。
【跟踪训练】在空白处填1个适当的单词或括号内单词的正确形式。
1．I had hardly sat down on the train and opened a bar of chocolate ________ an old man with huge bags sat down across from me.
2．I detected two obvious mistakes ________ (instant) I saw the article.
3．— Jack, where is Tom
— Sorry, I don’t know. But I will tell him that you want to see him ________ moment he comes back.
4．No sooner had I begun to understand how British people communicate ________ it was time to head back home.
5．No sooner had she took off the dark glasses ________ I recognized her.
6．I could hardly recognize her ________ (instant) I saw her after a couple of years.
7．He had hardly finished the composition ________ the bell rang.
8．Hardly ________ the police received the emergency call when they rushed to the scene.
9．I had hardly got to the office ________ my wife phoned me to go back home at once.
10．Hardly had I solved the problem ________ a new one arose, which really tired me out.
状语从句的省略用法
状语从句含有it is或者主从句主语一致且含有be动词时，省略主语和be动词。如果用“从属连词+现在分词”，强调从句谓语动词与句子主语之间的主动关系；“从属连词+过去分词”强调二者之间被动关系。
When (he was)walking in the street, he met an old friend. 在街上走时，他遇到了一位老朋友。
Once (it is) printed, the report will be sent to the manager. 报告一旦打印好，就会发给经理。
Unless (it is) necessary, we won’t hold a meeting. 除非必要，否则我们不开会。
★易错提醒：before和after后接动词，只能接动名词作宾语。
He became more confident after winning the competition. 赢得比赛后，他变得更自信了。
The document needs to be reviewed before being submitted.文件在提交前需要审核。
【跟踪训练】用括号法把下列各句的状语从句括起来。
1．Once __________ (addict) to the Internet, you will destroy your life and study without awareness.
2．Though__________ (lack) money, his parents managed to send him to college.
3．We all know that, if not carefully__________ (deal) with, the situation will get worse.
4．Children, when __________ (accompany) by their parents, are allowed to enter the stadium.
5．While __________ (walk) along the street, I met an old friend of mine.
6．Even if __________ (damage), the robot can still send an emergency signal.
7．Once __________ (release), the results of the experiment will definitely start a heated discussion.
8．When __________ (face) with difficulties, wise men try their best to get over them, but not to hold back.
9．While __________ (drive) along the freeway, they noticed a kangaroo standing in the middle of the road.
10．When first __________ (introduce) to the market, the product won great popularity.
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状语从句（
2
）
综合能力提升
)
一、单项语法填空
在空白处填1个适当的单词或括号内单词的正确形式。
1. _________watching TV, children do not merely absorb words and images.
2．Not_________we succeed in letting wildlife live in peace can we smile in relief.
3．Jingdezhen has a fascinating and storied history, of which I knew little_________I had the opportunity to visit it recently.
4．The little boy broke away from me _________ (instant) he saw his mother.
5．It’s easy to get lost when you drive in a new city, so it is important to study a good map_________you set out.
6．No sooner had I begun to understand how British people communicate_________ it was time to head back home.
7．I didn’t go to bed _________ I finished my homework.
8．A parking lot is going to be built _________there used to be a small park.
9．_________ (give) that they lack experience, they have done a good job.
10．Mark needs to learn Chinese _________ his company is opening a branch in Beijing.
11．Leave your kids _________ they are and they will grow up healthily and brightly.
12．_________a single word can change the meaning of a sentence, a single sentence can change the meaning of a paragraph.
13．The construction industry is no longer as depressed _________ it was.
14．Air pollution is getting more and more serious, so we must take action _________it is too late.
15．The house was greatly damaged by the truck and we’d better leave it _________ it is until the police arrives.
16．The school was much smaller _________he had expected.
17．He gives you his full attention _________ (immediate) you begin to speak.
18．As a matter of fact, it will take some years _________our country develops this technology.
19．I didn’t think about it much _________a morning last week when I knocked my favorite teapot off the table.
20．He had no sooner finished his speech _________ the students started cheering.
二、状语从句在语法填空中应用
（24-25高二下·福建莆田·期末）阅读短文，在空白处填1个适当的单词或括号内单词的正确形式。
The skin, the body’s largest organ, serves as a barrier against various threats and helps with temperature regulation and water loss. 1 you can imagine, getting burnt can lead to very serious injuries. 2 first and most important step in the 3 (treat) of burns is giving first aid.
Depending on the depth of skin damage, burns are divided into three 4 (type). First-degree burns affect only the top skin layer, like mild sunburns, which are dry, red and 5 (mild) swollen and painful. Second-degree burns 6 (cause) by hot liquids go below the top layer of the skin, resulting in redness, blisters, and extreme pain. They are serious and take a few weeks 7 (get) better. Third-degree burns affect every layer, and the tissue underneath can often 8 (see), which requires immediate hospital care.
If you see someone get burnt, first remove any clothes unless you see the fabric sticking to the burn and cool the burnt area with cool 9 (run) water. Then dry the area gently and cover the area 10 a dry, clean bandage in order not to get it infected. If the burn is serious, the victim should be sent to a doctor or hospital at once.
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21世纪教育网(www.21cnjy.com)专题03状语从句（2）
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目录
01知识脑图·学科框架速建
02考点精析·知识能力全解
【知能解读
01
】
状语从句概述
【知能解读
02
】
时间状语从句用法
【知能解读
03
】
原因状语从句用法
03 攻坚指南·高频考点突破
【重难点突破01】方式状语从句用法
【重难点突破02】地点状语从句用法
04 避坑锦囊·易混易错诊疗
【易混易错01】比较状语从句用法
【易混易错02】“一……就……”多样化表达方式
05 通法提炼·高频思维拆解
【方法技巧】状语从句的省略用法
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01 状语从句概述
状语从句：状语从句就是一个从句在句中相当于一个副词，表示时间、原因、条件、伴随、结果、让步等。
类型：根据功能，分让步状语从句、条件状语从句、目的状语从句、结果状语从句、时间状语从句、原因状语从句、方式状语从句、地点状语从句、比较状语从句等。
状语从句分类及连接词明细表
从句类型 常见引导词
让步状语从句 though, although, as, whether…or, while, no matter wh-, -ever
条件状语从句 if, unless, once, in case, on condition that, supposing, provided that, for fear that
目的状语从句 so that, in order that
结果状语从句 so that, such that, so…that, such…that
时间状语从句 when, while, as, before, as soon as, the moment, the first time
原因状语从句 because, as, since, now that, in that
方式状语从句 as, as if, as though
地点状语从句 where
比较状语从句 as…as…, than…, the more…the more…
02 时间状语从句用法
1. as, when和while引导的时间状语从句
as强调从句动作与主句动作同时或几乎同时发生，译作“随着”。when从句可以是时间点也可以是时间段，译作“当……时候”。while表示“在……期间”，谓语应用延续性动词。
As the sun rose, the birds began to sing. 太阳升起时，鸟儿开始歌唱。
As children grow older, they become more independent. 随着孩子们长大，他们变得更独立。
When the bell rang, the students rushed out of the classroom.铃声响起时，学生们冲出了教室。
When I was young, I often played in this park. 我小时候经常在这个公园玩。
Please keep quiet while the teacher is speaking. 老师讲话时请保持安静。
While my wife was reading the newspaper, I was watching TV.妻子在看报纸我在看电视。
2. after, before引导的时间状语从句
after接从句，表示“在……之后”; before接从句，表示“在……之前”。有时根据语境翻译作“趁……”，“还没来得及……就”。before常用于It will be+时间段+before，It was +时间段+before…等句型。
He called me after he arrived at the airport. 他到达机场后给我打了电话。
After the rain stopped, a beautiful rainbow appeared in the sky. 雨停后，天空中出现了一道美丽的彩虹。
The sun had risen before we started our journey.我们出发前，太阳已经升起来了。
It will be a few weeks before the new library opens. 新图书馆要几周后才会开放。
It was two hours before the firefighters arrived. 过了两个小时消防员才赶到。
★易错提醒：It was +时间段+before…句型注意与强调句型的不同。
It wasn't long before they found the missing child. 没过多久，他们就找到了那个失踪的孩子。
It was last Monday that we held the meeting. 我们是在上周一开的会。
3. since引导的时间状语从句
since表示“自从……以来”，引导时间状从，从句谓语用一般过去时，常用于It is+时间段+since…句型；从句谓语是瞬时性动词，表示“自从……以来”。
I have lived in this city since I graduated from college.自从大学毕业以来，我就住在这座城市。
It has been three years since we last saw each other. 自从我们上次见面以来，已经过去三年了。
★易错提醒：since从句是延续性动词则表示“自该动作结束以来”。
She hasn’t called me since she lived here. 自从她离开这里（不住在这里）后，就没给我打过电话。
4. till和until引导的时间状语从句
till 和 until 含义相同，都表示 “直到…… 为止”，引导时间状语从句时，主句动作持续到从句动作发生时结束。两者的区别在于：till 多用于口语，until 可用于句首，till 一般不用于句首。
1）肯定句中，其主句谓语动词必须为延续性动词，表示某动作一直延续到某时间为止。
2）否定句中（not... until）：表示 “直到…… 才”，主句常用非延续性动词。
She stayed in the office until she finished all the work. 她一直在办公室待到完成所有工作。
He didn’t apologize to me not until I pointed out his mistake. 直到我指出他的错误，他才向我道歉。
★易错提醒：Not until…位于句首，主句采用部分倒装语序，主句仍然采用陈述语序。
Not until I traveled abroad did I realize the importance of learning English.
直到出国旅行，我才意识到学英语的重要性。
5. 名词短语引导的时间状语从句
every/each time…每次next time…下次the first/last time…第一次/最后一次the minute/instant/second…一……就后面直接跟名词，构成时间状语从句。
I’ll remember to call you next time I’m in town. 下次我进城时，会记得给你打电话。
The first time I traveled abroad, I felt both excited and nervous. 我第一次出国旅行时，既兴奋又紧张。
He called me the instant he arrived at the station. 他一到车站就给我打了电话。
★易错提醒：every/each time…, next time…, the first/last time…, the minute/instant/second 等短语用作连词，名词后边不能接when等词。
The minute she walked in, the phone rang. 她一进门，电话就响了。
The last time we met, we didn’t say goodbye properly. 我们最后一次见面时，没有好好道别。
【跟踪训练】在空白处填1个适当的单词或括号内单词的正确形式。
1．________ he grew older, he became less active.
【答案】As
【详解】考查连词。句意：随着他年龄的增长，他变得不那么活跃了。表示“随着”，连词为as，引导时间状语从句，首字母大写。故填As。
2．Not __________we succeed in letting wildlife live in peace can we smile in relief.
【答案】until
【详解】考查时间状语从句。句意：只有我们成功地让野生动物和平生活，我们才能如释重负地微笑。空后can we smile in relief使用了部分倒装，且“成功地让野生动物和平生活”是“如释重负地微笑”发生之前必须满足特定的条件，因此用until“到……时”和not搭配，表示“直到……才”，引导时间状语从句。故填until。
3．Alice recognized Tom __________ instant she saw him.
【答案】the
【详解】考查定冠词。句意：爱丽丝一看见汤姆就认出了他。the instant...引导时间状语从句，意为“一……就……”，因此空格处用the，故填the。
4．It will be several years __________ the full impact of the recent technological advancements in artificial intelligence is fully understood.
【答案】before
【详解】考查固定句型和时间状语从句。句意：要过几年，人们才能完全理解人工智能近期技术进步的全部影响。分析句子可知，此处为固定句型“It will be + 一段时间 + before...”，意为“要过多久才……”，满足句意要求。before引导时间状语从句。故填before。
5．— Jack, where is Tom
— Sorry, I don’t know. But I will tell him that you want to see him __________ moment he comes back.
【答案】the
【详解】考查冠词固定搭配。句意：—— 杰克，汤姆在哪里？—— 对不起，我不知道。但他一回来我就会告诉他你想见他。此处应用固定短语the moment，表示“一……就……”，“the moment”是复合连词，相当于“as soon as”，用来引导时间状语从句。故填the。
6．John thinks it won’t be long __________ he is ready for his new job.
【答案】before
【详解】考查固定句型。句意：约翰认为不久他就能为新工作做好准备了。此处为固定句型“it won’t be long before + 从句”，意为“不久之后就……”，其中before引导时间状语从句，表示“在…… 之前”。故填before。
7．I was informed that it will be eight months __________ a rescue mission arrives from Earth.
【答案】before
【详解】考查状语从句。句意：我被告知，要过八个月才会有来自地球的救援任务抵达。it will be + 时间段 + before...表示“要过多久才……”，故空处应用before引导时间状语从句。故填before。
8．I have worked in this school__________I graduated from Peking University.
【答案】since
【详解】考查时间状语从句。句意：自从我从北京大学毕业后，我就一直在这所学校工作。此处表示“自从……以来”，用since，引导时间状语从句。故填since。
9．Please don’t talk so loudly __________ others are working.
【答案】while
【详解】考查连词。句意：别人工作时，请不要大声说话。空格后的部分是时间状语从句，且从句的时态是现在进行时，空格处应该填入一个连词引导时间状语从句，意义为“在……期间；当……的时候”，所以用while。故填while。
10．You can only imagine how travellers felt __________ they saw the oasis of Dunhuang ahead of them.
【答案】when
【详解】考查时间状语从句。句意：你只能想象当旅行者们看到前方敦煌的绿洲时他们的感受。根据句子逻辑，“how travellers felt”和“they saw the oasis of Dunhuang ahead of them”之间存在时间上的关联，即旅行者是在看到绿洲这个时间点产生了相应的感受。when引导时间状语从句，表示“当……时候”，符合此处语境，用来连接这两个部分，说明感受产生的时间。故填when。
03原因状语从句的用法
1.because引导的原因状语从句
because通常用于回答why引出的疑问句，语气最强，除特别强调外，该从句一般位于主句后面。
They didn’t buy the house because it was too far from the city.他们没买那栋房子，因为它离市区太远。
He was hungry, because he didn’t eat breakfast. 他饿了，因为没吃早餐。
2.as引导的原因状语从句
as引导的原因状语从句多位于主句之前，通常可以和since换用，as语气稍弱。
As the weather was fine, we decided to have a picnic by the lake. 因为天气好，我们决定去湖边野餐。
As we’re both free today, why not go to the museum 既然我们今天都有空，为什么不去博物馆呢？
3.since引导的原因状语从句
since表示人们已知的事实，不许强调的原因，故常译为“既然……”，通常位于主句前，相当于now that。
Since everyone is here, let’s start the meeting. 既然大家都到了，我们开始开会吧。
Since the project is finished, we can celebrate now. 由于项目已经完成，我们现在可以庆祝了。
4.Now that等原因状语从句
in that“因为；基于……的理由”，可以和because换用，多用于正式文体，总是位于主句之后。Seeing that/Considering that/Given that…表示“鉴于，考虑到”，通常用于非正式文体。
He is not suitable for the job in that he lacks relevant experience. 他不适合这份工作，因为他缺乏相关经验。
Now (that) you are grown up, you should not rely on your parents. 既然你长大了， 就不应该依靠你的父母了。
Considering (that) everybody is here, let’s begin our discussion. 既然大家都到了， 我们就开始讨论吧。
Seeing (that) he refused to help us, there’s no reason that we should now help him. 他既然曾经拒绝帮助我们，
【跟踪训练】在空白处填1个适当的单词或括号内单词的正确形式。
1．Enjoying a fresh morning is important ________ it can set the mood for the rest of the day.
【答案】because/as
【详解】考查连词。句意：享受清新的早晨很重要，因为它能为一天剩下的时间定下基调。后半句it can set the mood for the rest of the day解释了前半句“Enjoying a fresh morning is important”原因。because和as都可引导原因状语从句，表达“因为”的意思。故填because/as。
2．________ (give) that they’re inexperienced, they’ve done a good job. (所给词的适当形式填空)
【答案】Given
【详解】考查介词。句意：考虑到他们缺乏经验，他们已经做得很好了。此处为固定句型given that从句，引导原因状语从句，意为“考虑到、鉴于”，位于句首单词首字母需大写。故填Given。
3．Now ________you have finished your work, you’d better have a rest.
【答案】that
【详解】考查原因状语从句。句意：既然你已经完成了工作，那你最好休息一下。引导原因状语从句，表示“既然”用now that。故填that。
4．________ everyone is here, let's begin our class.
【答案】Since
【解析】考查原因状语从句。句意：既然大家都来，咱们就开始上课。引导原因状语从句，表示“既然”用since。故填since。
5．We listened eagerly, ________ he brought news of our families.
【答案】for
【详解】考查连词。句意：我们急切地听着，因为他带来了我们家人的消息。分析句子结构，设空处需要一个连词来连接两个句子，表示原因，补充说明主句，故填for。
6．________ that we are all part of the global village, everyone becomes a neighbour.
【答案】Now
【详解】考查状语从句。句意：既然我们都是地球村的一部分，每个人都成为邻居。引导原因状语从句，表示“既然”应用now that，首字母大写。故填Now。
7．________you have already known the truth, I don’t need to explain it again.
【答案】Since
【详解】考查原因状语从句。句意：既然你已经知道了真相，我就不需要再解释了。此处引导原因状语从句，意为 “既然”，用since引导，位于句首，首字母大写。故填：Since。
8．He was late for the meeting in________ his car broke down on the way.
【答案】that
【详解】考查连词。句意：他开会迟到了，因为他的车在路上抛锚了。He was late for the meeting和his car broke down on the way之间是因果关系，in that意为“因为”，引导原因状语从句。故填that。
9．________ you can’t answer the question, I’ll ask someone else.
【答案】Since
【详解】考查连词。句意：既然你回答不了这个问题，我就问别人吧。分析句意可知，此处用连词since来引导原因状语从句，且位于句首的单词首字母要大写。故答案为Since。
10．Many students lost marks in the exam simply ________ they didn’t read the questions carefully.
【答案】because
【详解】考查连词。句意：许多学生在考试中简单地丢了分，因为他们没有仔细阅读问题。分析句子结构和意思可知，两个句子之间是因果关系，第二句是原因，故用连词because。故填because。
01方式状语从句用法
1. as引导的方式状语从句
as引导的方式状语从句通常位于主句后，意思是＂正如……＂，＂就像＂，多用于正式文体。
Leave the things as they are. 别动这些东西
You must try to hold the tool as I do.你必须像我这样拿工具
Always do to the others as you would be done by. 你希望人家怎样待你，你就要怎样待人。
2. as if/as though引导的方式状语从句
as if/as though引导的方式状语从句谓语多用虚拟语气，表示与事实相反，常译作＂仿佛……似的＂。
He looks as if he is angry. 他看上去好像生气了。
It looked as if there would be an exciting race.看来要有一场激动人心的比赛。
He stared at me as if seeing me for the first time. 他目不转睛地看着我，就像第一次看见我似的。
【跟踪训练】在空白处填1个适当的单词或括号内单词的正确形式。
1．Football _________ we know it today started in Great Britain, where the game was given new rules.
【答案】as
【详解】考查状语从句。句意：我们今天所知道的足球起源于英国，在那里这项运动被赋予了新的规则。此处为连词引导的从句，从句中不缺成分，且句意完整，结合句意，此处为连词引导的方式状语从句，所以此处使用连词as意为“正如”。故填as。
2．The kids were very friendly with her and even looked up to her as _________ she were their own mother.
【答案】if/though
【详解】考查方式状语从句。句意：孩子们和她非常友好，甚至把她当作自己的母亲一样尊敬。本空引导方式状语从句，表示“好像”，用as if/though。故填if/though。
3．What we are concerned about is how we can finish the task in two weeks_________ planned.
【答案】as
【详解】考查连词。句意：我们所关注的是我们如何能按计划在两周内完成任务。根据句意，空处应填as，表示“按……的方式”，引导方式状语从句。此处是方式状语从句的省略。
4．Just _________ a single word can change the meaning of a sentence, a single sentence can change the meaning of a paragraph.
【答案】as
【详解】考查固定短语。句意：就像一个单词可以改变一个句子的意思一样，一个句子也可以改变一个段落的意思。just as为固定短语，意为“正如,正像”，此处用as引导方式状语从句。故填as。
5．We’d better leave things _________ they are until the police arrive, which helps them investigate the case.
【答案】as
【详解】考查状语从句。句意：我们最好让事情保持原样，直到警察到来，这有助于他们调查案件。引导方式状语从句，表示“像……一样”应用as。故填as。
02地点状语从句用法
where既可引导定语从句，也可引导地点状语从句。where引导定语从句时，从句前应有一个表示地点的名词作先行词，where可替换成“介词+ which'”；而状语从句前则无先行词。
They should go where they are needed most.他们应该去最需要他们的地方。
She lives where the climate is mild all year round. 她住在气候终年温和的地方。
【跟踪训练】在空白处填1个适当的单词或括号内单词的正确形式。
1．The flowers grow best _________ there is enough sunlight.
【答案】where
【详解】考查状语从句。句意：花朵在有充足阳光的地方生长得最好。引导地点状语从句，表示“在……地方”用where。故填where。
2．Located _________ the Belt meets the Road, Jiangsu will contribute more to the Belt and Road construction.
【答案】where
【详解】考查状语从句。句意：坐落于一带一路的交汇点，江苏将为一带一路建设作出更大的贡献。引导地点状语从句，表示“……的地方”用where。故填where。
3．He always parks his car _________ he can see it from the window, just to make sure it’s safe.
【答案】where
【详解】考查连接副词。句意：他总是把车停在他能从窗户看到的地方，只是为了确保安全。 he can see it from the window是地点状语从句，空格处应该填入一个连接词引导从句，且意义为“（在）……的地方”，所以应该用连接副词where。故填where。
4．Mohammed Rezwan saw opportunity_________ others saw only disaster.
【答案】where
【详解】考查地点状语从句。句意：在其他人只看到灾难的地方，穆罕默德 雷兹万看到了机遇。分析句子结构可知，“Mohammed Rezwan saw opportunity”是主句，空处引导从句，且从句不缺少主要成分，需表明主句中“saw opportunity” 这个动作发生的“地点”，并非实际的地理位置，而是一种抽象的情境，应用where来引导这个状语从句，表示“在……的地方”。故填where。
5．Today, the USS Arizona lies _________ it sank: in the middle of the Pacific Ocean.
【答案】where
【详解】考查地点状语从句。句意：今天，亚利桑那号战列舰就躺在它沉没的地方：太平洋中部。根据“in the middle of the Pacific Ocean”可知，在地点状语从句中缺少地点状语，所以应用where表示“哪里”。故填where。
01 比较状语从句用法
1. as…as…引导的原级比较状语从句
as…as…引导的原级比较状语从句，第一个as是副词，第二个是连词，中间接形容词、副词原级。也可以是as+形容词+a(n)+名词+as结构。否定句中，可以替换为not so…as…。
The weather today is as hot as it was yesterday. 今天的天气和昨天一样热。
He doesn’t study as carefully as his sister. 他学习不如他妹妹认真。
2.than引导的比较状语从句
形容词/副词比较级+than…结构是常用比较级结构。
This problem is more difficult than I expected. 这个问题比我预期的更难。
He speaks English more fluently than he writes it. 他说英语比写英语更流利。
This movie is not more interesting than the one we saw yesterday. 这部电影不比我们昨天看的那部更有趣。
3.the+比较级+主语+谓语，the+比较级+主语+谓语
前半句是从句，后半句是主句, 在非正式语境中，有时可省略主语和谓语，直接用“the + 比较级，the + 比较级”。
The fewer mistakes you make, the higher score you will get.你犯的错误越少，得分就会越高。
The colder it gets, the more I want to stay at home. 天气越冷，我就越想待在家里。
【跟踪训练】在空白处填1个适当的单词或括号内单词的正确形式。
1．It’s true; the _________ (old) I get, the more I feel time has wings.
【答案】older
【详解】考查固定句型。句意：这是真的，年龄越大，我越觉得光阴如梭。此处是“the+比较级，the+比较级”结构，表示“越……，就越……”，因此空格处是比较级older。故填older。
2．Do foreigners not understand British humor or are the British just not so funny_________ they think they are
【答案】as
【详解】考查连词。句意：是外国人不懂英式幽默，还是英国人真的不像他们自己认为的那样有趣？根据“just not so funny”和“they think they are”可知此处要用连词，短语so...as...意为“与……一样”。故填as。
3．The volunteers are no longer the same young men _________ they were ten years ago.
【答案】as
【详解】考查固定短语。句意：这些志愿者不再是十年前的年轻人了。the same as是一个固定短语，意为“与……一致/一样”，此处引导比较状语从句。故填as。
4．We’re doing everything we can to make things as easy for you _________ we can.
【答案】as
【详解】考查固定搭配。句意：我们正在尽我们所能使事情对你来说变得尽可能简单。as…as sb. can“尽某人所能……”，固定搭配。故填as。
5．The more we know each other, the _________ (well) we understand each other.
【答案】better
【详解】考查固定句型。句意：我们彼此了解得越多，我们就越理解对方。此处为固定句型“the+比较级…, the+比较级+…”意为“越……，越……”，所以此处使用副词well比较级better修饰动词understand。故填better。
6．Some young girls think the _________ (slim) they are, the more attractive they will look.
【答案】slimmer
【详解】考查形容词比较级。句意：一些年轻女孩认为她们越苗条，看起来就越有魅力。the+比较级，the+比较级，表示“越……，就越……”，此处用形容词比较级作表语。故填slimmer。
7．Scientists have collected more data _________ expected to prove the theory.
【答案】than
【详解】考查连词。句意：科学家们收集了比预期更多的数据来证明这一理论。表示“比预期的更……”为than (they are )expected。为状语从句的省略。故填than。
8．Building a skyscraper in the 21st century is much easier_________ it used to be.
【答案】than
【详解】考查比较状语从句。句意：在21世纪建造一座摩天大楼要比过去容易得多。空前使用了比较级，空后为比较状语从句，所以空处填than，故填than。
9．The more we acknowledge the outstanding universal value of our heritage sites, the_________ (likely) we are to treat them with respect.
【答案】more likely
【详解】考查固定句型。句意：我们越是认识到文化遗产的突出的普遍价值，我们就越有可能以尊重的态度对待它们。此处为固定句型“the+比较级…, the +比较级…”意为“越……，越……”，所以此处应使用likely的比较级。故填more likely。
10．When it opens in 2023, it should be able to produce more energy_________it uses.
【答案】than
【详解】考查固定句型和连词。句意：当它在2023年投入使用时，它应该能够产生比它使用的更多的能量。根据空前的more和句意可知，more...than...为固定结构，意思是“ 比……更……”than为连词，引导比较状语从句。故填than。
02 “一……就……”多样化表达方式
1.标准型：as soon as引导时间状语从句，注意“主将从现”用法。
As soon as the bell rings, the students will rush out of the classroom.铃一响，学生们就会冲出教室。
2.名词型：the moment/ minute/ instant/ second+从句引导时间状语从句。
The moment she saw the gift, she knew it was from him. 她一看到礼物，就知道是他送的。
3.副词型：immediately /directly/ instantly形式上是副词，其实这里转化为从属连词，引导时间状语从句。
Immediately he finished speaking, the audience broke into applause. 他一讲完，观众就鼓起掌来。
4.介词型：on/upon后接名词或动名词，构成时间状语。
On arriving at the station, he realized he had lost his ticket. 一到车站，他就发现票丢了。
At the sight of the snake, she screamed. 她一看到蛇就尖叫起来。
5.倒装型：no sooner…than.../hardly… when … 句式不同但意思相同，都表示“刚一……就……”，注意主句用过去完成时，且部分倒装（前提是no sooner/hardly位于句首）。
No sooner had she left than he regretted what he said. 她刚离开，他就后悔自己说的话了。
Hardly had I opened the door when the phone rang. 我刚打开门，电话就响了。
【跟踪训练】在空白处填1个适当的单词或括号内单词的正确形式。
1．I had hardly sat down on the train and opened a bar of chocolate ________ an old man with huge bags sat down across from me.
【答案】when
【详解】考查固定句型。句意：我刚在火车上坐下，打开一块巧克力，就有一个提着大袋子的老人坐在我对面。空处前后均为完整的句子，结合“had hardly”可知，此处应用固定句型hardly… when…“一……就……”，表示接连发生的两个动作之间存在紧密的时间关联，when引导时间状语从句。故填when。
2．I detected two obvious mistakes ________ (instant) I saw the article.
【答案】instantly
【详解】考查连词。句意：我一看到这篇文章，就发现了两个明显的错误。空处前后为两个完整的句子，需要一个连词连接，应用instant的连词形式instantly引导时间状语从句，意为“一……就……”。故填instantly。
3．— Jack, where is Tom
— Sorry, I don’t know. But I will tell him that you want to see him ________ moment he comes back.
【答案】the
【详解】考查冠词固定搭配。句意：—— 杰克，汤姆在哪里？—— 对不起，我不知道。但他一回来我就会告诉他你想见他。此处应用固定短语the moment，表示“一……就……”，“the moment”是复合连词，相当于“as soon as”，用来引导时间状语从句。故填the。
4．No sooner had I begun to understand how British people communicate ________ it was time to head back home.
【答案】than
【详解】考查固定句型。句意：我刚开始了解英国人如何交流，就到了回家的时间了。根据“No sooner had I begun to understand how British people communicate”可知，此处为固定句型“no sooner...than...”，表示“一……就……”，引导时间状语从句。故填than。
5．No sooner had she took off the dark glasses ________ I recognized her.
【答案】than
【详解】考查状语从句固定句型。句意：她一摘下墨镜，我就认出她来了。no sooner...than...为固定句型，意为“一……就……”，no sooner后为主句，than后为时间状语从句。故填than。
6．I could hardly recognize her ________ (instant) I saw her after a couple of years.
【答案】instantly/the instant
【详解】考查状语从句。句意：过了几年之后再次见到她时，我简直都认不出她了。引导时间状语从句，表示“一……就”用instantly/the instant。故填instantly/the instant。
7．He had hardly finished the composition ________ the bell rang.
【答案】when
【详解】考查时间状语从句。句意：他一写完作文，铃就响了。分析句子可知，句子为时间状语从句，结合句意可知，句中涉及固定句型“hardly…when...”，意为“一……就……”，故空格处应用“when”。故填when。
8．Hardly ________ the police received the emergency call when they rushed to the scene.
【答案】had
【详解】考查动词时态。句意：警察一接到报警电话就赶到了现场。这里用了hardly… when…句型，表示“一……就……”，“警察接到报警电话”发生在“赶到现场”之前，主句时态应用过去完成时，且hardly置于句首，句子部分倒装，had放在主语the police之前。故填had。
9．I had hardly got to the office ________ my wife phoned me to go back home at once.
【答案】when
【详解】考查时间状语从句。句意：我刚到办公室，妻子就给我打电话，让我马上回家。根据句意可知，句子为时间状语从句，涉及固定句型“hardly…when…”，意为“刚做完……这时……”，故空格处应用“when”。故填when。
10．Hardly had I solved the problem ________ a new one arose, which really tired me out.
【答案】when
【详解】考查固定句型。句意：我刚解决这个问题，又出现了一个新问题，这真使我筋疲力尽。由句意及空前的Hardly had I solved the problem可知应填when，hardly...when...“一……就……”，固定句型。故填when。
状语从句的省略用法
状语从句含有it is或者主从句主语一致且含有be动词时，省略主语和be动词。如果用“从属连词+现在分词”，强调从句谓语动词与句子主语之间的主动关系；“从属连词+过去分词”强调二者之间被动关系。
When (he was)walking in the street, he met an old friend. 在街上走时，他遇到了一位老朋友。
Once (it is) printed, the report will be sent to the manager. 报告一旦打印好，就会发给经理。
Unless (it is) necessary, we won’t hold a meeting. 除非必要，否则我们不开会。
★易错提醒：before和after后接动词，只能接动名词作宾语。
He became more confident after winning the competition. 赢得比赛后，他变得更自信了。
The document needs to be reviewed before being submitted.文件在提交前需要审核。
【跟踪训练】用括号法把下列各句的状语从句括起来。
1．Once __________ (addict) to the Internet, you will destroy your life and study without awareness.
【答案】addicted
【详解】考查状语从句的省略。 句意：一旦沉迷于网络，你就会在不知不觉中毁掉自己的生活和学习。 当状语从句的主语和主句的主语一致，且含有被动词时，可以省略从句的主语和be动词。once引导的条件状语从句省略了主语you和be动词are，其完整形式为“Once you are addicted to the Internet”，所以空处剩下形容词addicted的形式。故填addicted。
2．Though__________ (lack) money, his parents managed to send him to college.
【答案】lacking
【详解】考查状语从句的省略用法。句意：尽管缺钱，他的父母还是设法送他上了大学。分析句子可知，though引导的让步状语从句中，若主从句主语一致，且从句谓语含有be 动词，可省略主语和be动词。此处从句完整形式为“Though his parents were lacking money”，省略“his parents were”后，直接用现在分词lacking作状语。故填lacking。
3．We all know that, if not carefully__________ (deal) with, the situation will get worse.
【答案】dealt
【详解】考查非谓语动词。句意：我们都知道，如果不仔细处理，情况会变得更糟。此处为if引导的条件状语从句中的省略结构，从句中的主语和主句主语一致，且谓语动词中含有be动词，可以省略“主语+be”，deal with与其逻辑主语the situation之间是被动关系，因此用过去分词dealt，其完整句子为“if the situation isn’t carefully dealt with”。故填dealt。
4．Children, when __________ (accompany) by their parents, are allowed to enter the stadium.
【答案】accompanied
【详解】考查状语从句的省略。句意：孩子们在父母的陪同下可以进入体育场。 本题考查状语从句的省略，当从句中主语和主句主语一致，且从句中又含有be动词时，从句中主语和be可以省略，原句补充完整为“Children, when they are accompanied by their parents, are allowed to enter the stadium.”，从句中省略they are。故填accompanied。
5．While __________ (walk) along the street, I met an old friend of mine.
【答案】walking
【详解】考查状语从句的省略。句意：在街上散步时，我遇到了我的一位老朋友。句子的主语I和动词walk之间是主动关系。当主从句主语一致，且从句中含有be动词时，从句可以省略主语和be动词，原句完整形式为While I was walking along the street, I met an old friend of mine.省略了I was，保留现在分词。故填walking。
6．Even if __________ (damage), the robot can still send an emergency signal.
【答案】damaged
【详解】考查状语从句的省略。句意：即使被损坏，这个机器人仍能发送紧急信号。分析句子可知，Even if引导让步状语从句，完整的从句为even if the robot is damaged，从句中省略了主语the robot和be动词，保留过去分词damaged。故填damaged。
7．Once __________ (release), the results of the experiment will definitely start a heated discussion.
【答案】released
【详解】考查非谓语动词。句意：一旦实验结果公布，肯定会引发激烈的讨论。分析句子结构可知，此处为once引导的时间状语从句的省略，时间状语从句中的主语和主句主语一致，且谓语动词中含有be动词时，可以省略“主语+be动词”，该句中release与其逻辑主语the results of the experiment之间是被动关系，表示“结果被公布”，因此用过去分词released，其完整形式为“Once the results of the experiment is released”，此处省略了“the results of the experiment is”。故填released。
8．When __________ (face) with difficulties, wise men try their best to get over them, but not to hold back.
【答案】faced
【详解】考查状语从句中的省略。句意：当面临困难时，明智之人会竭尽全力去克服它们，而非选择退缩。be faced with“面临，面对”，when引导的时间状语从句的主语与主句主语一致，此从句中主语和be动词可省略，构成“when+过去分词”的省略句型。故填faced。
9．While __________ (drive) along the freeway, they noticed a kangaroo standing in the middle of the road.
【答案】driving
【详解】考查状语从句中的省略。句意：在高速公路上开车时，他们注意到一只袋鼠站在路中间。此处用了while引导时间状语从句，且从句的主语和主句的主语一致，从句中含有be动词，因此对主语和be动词同时进行了省略，drive“开车”和被省略的主语they之间是主动关系，应用drive的现在分词形式。故填driving。
10．When first __________ (introduce) to the market, the product won great popularity.
【答案】introduced
【详解】考查非谓语动词。句意：该产品首次引入市场时就大受欢迎。此处为时间状语从句中的省略结构，从句的主语和主句主语一致，且谓语动词中含有be动词，可以省略“主语+be动词”，逻辑主语“the product”与“introduce”之间为被动关系，所以用过去分词形式introduced，此处为省略结构，完整形式为“When the product was first introduced to the market”。故填introduced。
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状语从句（
2
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综合能力提升
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一、单项语法填空
在空白处填1个适当的单词或括号内单词的正确形式。
1. _________watching TV, children do not merely absorb words and images.
【答案】While
【详解】考查时间状语从句。句意：在看电视时，孩子们不仅仅是吸收文字和图像。此处需要一个从属连词和watching TV搭配，构成“从属连词+现在分词”的省略句，且句中强调“看电视的过程中”，因此用while“在……的时候”，突出持续状态，句首单词的首字母需大写。故填While。
2．Not_________we succeed in letting wildlife live in peace can we smile in relief.
【答案】until
【详解】考查时间状语从句。句意：只有我们成功地让野生动物和平生活，我们才能如释重负地微笑。空后can we smile in relief使用了部分倒装，且“成功地让野生动物和平生活”是“如释重负地微笑”发生之前必须满足特定的条件，因此用until“到……时”和not搭配，表示“直到……才”，引导时间状语从句。故填until。
3．Jingdezhen has a fascinating and storied history, of which I knew little_________I had the opportunity to visit it recently.
【答案】until
【详解】考查连词。句意：景德镇有着迷人且富有传奇色彩的历史，我对它知之甚少，直到我最近有机会去参观它，。until表示“直到……才”，引导时间状语从句，符合句子逻辑，即去参观之前对其了解少。故填until。
4．The little boy broke away from me _________ (instant) he saw his mother.
【答案】instantly
【详解】考查连词。句意：这个小男孩一看到他的妈妈就挣脱了我。空处需填连词连接前后两个分句。instant的副词形式instantly可作连词引导时间状语从句，相当于as soon as，表示“一…… 就……”，符合语境。故填instantly。
5．It’s easy to get lost when you drive in a new city, so it is important to study a good map_________you set out.
【答案】before
【详解】考查时间状语从句。句意：在一个陌生的城市开车很容易迷路，所以在出发前研究好地图是很重要的。由“It’s easy to get lost when you drive in a new city”可知，句子表示“在一个陌生的城市开车很容易迷路，所以在出发前研究好地图是很重要的”，空格处意为“在……之前”，用before，引导时间状语从句，故填before。
6．No sooner had I begun to understand how British people communicate_________ it was time to head back home.
【答案】than
【详解】考查固定句型。句意：我刚开始了解英国人如何交流，就到了回家的时间了。根据“No sooner had I begun to understand how British people communicate”可知，此处为固定句型“no sooner...than...”，表示“一……就……”，引导时间状语从句。故填than。
7．I didn’t go to bed _________ I finished my homework.
【答案】until
【详解】考查时间状语从句。句意：我直到做完作业才上床睡觉。not...until...是固定句型，意为“直到……才……”，因此空格处是until引导时间状语从句。故填until。
8．A parking lot is going to be built _________there used to be a small park.
【答案】where
【详解】考查状语从句。句意：在过去是一个小公园的地方要建一个停车场。分析句子结构可知，空处引导状语从句，且从句中缺少地点状语，应用where引导地点状语从句，说明主句事件发生的地点。故填where。
9．_________ (give) that they lack experience, they have done a good job.
【答案】Given
【详解】考查原因状语从句。句意：考虑到他们缺乏经验，他们已经做得很好了。given that“考虑到，鉴于”，引导原因状语从句，首字母应大写，故填Given。
10．Mark needs to learn Chinese _________ his company is opening a branch in Beijing.
【答案】because/since/as
【详解】考查原因状语从句。句意：马克需要学习中文，因为他的公司正在北京开设一家分公司。后半句“his company is opening a branch in Beijing(他的公司正在北京开设分公司)”是前半句“Mark needs to learn Chinese(马克需要学习中文)”的原因，此处需用连接词引导原因状语从句，because、since、as 均可表示 “因为”，引导原因状语从句，故填because/since/as。
11．Leave your kids _________ they are and they will grow up healthily and brightly.
【答案】as
【详解】考查状语从句的引导词。句意：让孩子顺其自然地成长，他们会长大得健康又开朗。空处引导方式状语从句，表示“按照，以……的方式”应用as。故答案是as。
12．_________a single word can change the meaning of a sentence, a single sentence can change the meaning of a paragraph.
【答案】As
【详解】考查方式状语从句。句意：就像一个单词可以改变一个句子的意思一样，一个句子也可以改变一个段落的意思。逗号前后均为完整的句子，结合所表述的内容可知，此处指前后情况类似，应用意为“如同，像……一样”的连词as引导方式状语从句，且句首单词的首字母应大写。故填As。
13．The construction industry is no longer as depressed _________ it was.
【答案】as
【详解】考查固定搭配。句意：建筑业不再像过去那样萧条了。根据句意及上文as可知此处为短语as...as.，表示“和……一样”，as此处是连词，引导方式状语从句。故填as。
14．Air pollution is getting more and more serious, so we must take action _________it is too late.
【答案】before
【详解】考查连词。句意：空气污染变得越来越严重，所以我们必须在为时已晚之前采取行动。根据句意和空后“it is too late”可知，此处表示“在太晚之前”，是before引导的时间状语从句，故空处应填连词before，表示“在……之前”。故填before。
15．The house was greatly damaged by the truck and we’d better leave it _________ it is until the police arrives.
【答案】as
【详解】考查方式状语从句。句意：房子被卡车严重损坏了，我们最好保持原样，直到警察到来。as引导方式状语从句，意为“照……方式”。故填as。
16．The school was much smaller _________he had expected.
【答案】than
【详解】考查状语从句。句意：这所学校比他预期的要小的多。分析句子成分以及空格前smaller可知，空格处应填比较状语从句的引导词，所以应填than。故填than。
17．He gives you his full attention _________ (immediate) you begin to speak.
【答案】immediately
【详解】考查连词。句意：你一开口，他就会全神贯注地听你说话。分析句子可知，此空应填连词引导时间状语从句，immediately，表“一……就……”，副词作连词用，符合句意。故填immediately。
18．As a matter of fact, it will take some years _________our country develops this technology.
【答案】before
【详解】考查固定句型。句意：事实上，我们国家要发展这项技术还需要几年的时间。根据句子结构和语境可知，此处是固定句型 “It will take + 一段时间 + before...”，表示“要过一段时间才……”，其中before引导时间状语从句。故填before。
19．I didn’t think about it much _________a morning last week when I knocked my favorite teapot off the table.
【答案】until/till
【详解】考查时间状语从句。句意：直到上周的一天早上，我把我最喜欢的茶壶从桌子上打翻，我才想了很多。空格处意为“直到”，可用until/till，引导时间状语从句，not...until/till...是固定句型，意为“直到……才……”。故填until/till。
20．He had no sooner finished his speech _________ the students started cheering.
【答案】than
【详解】考查连词。句意：他刚演讲完，学生们就开始欢呼起来。“no sooner…than”，表示“一……就……”引导时间状语从句。故填than。
二、状语从句在语法填空中应用
（24-25高二下·福建莆田·期末）阅读短文，在空白处填1个适当的单词或括号内单词的正确形式。
The skin, the body’s largest organ, serves as a barrier against various threats and helps with temperature regulation and water loss. 1 you can imagine, getting burnt can lead to very serious injuries. 2 first and most important step in the 3 (treat) of burns is giving first aid.
Depending on the depth of skin damage, burns are divided into three 4 (type). First-degree burns affect only the top skin layer, like mild sunburns, which are dry, red and 5 (mild) swollen and painful. Second-degree burns 6 (cause) by hot liquids go below the top layer of the skin, resulting in redness, blisters, and extreme pain. They are serious and take a few weeks 7 (get) better. Third-degree burns affect every layer, and the tissue underneath can often 8 (see), which requires immediate hospital care.
If you see someone get burnt, first remove any clothes unless you see the fabric sticking to the burn and cool the burnt area with cool 9 (run) water. Then dry the area gently and cover the area 10 a dry, clean bandage in order not to get it infected. If the burn is serious, the victim should be sent to a doctor or hospital at once.
1．As 2．The 3．treatment 4．types 5．mildly 6．caused 7．to get 8．be seen 9．running 10．with
【导语】本文是一篇说明文。文章主要介绍了烧伤的分类和处理方法，以及遇到烧伤情况时应采取的急救措施。
1．考查状语从句。句意：正如你能想象的那样，烧伤会导致非常严重的伤害。设空处引导非限制性定语从句，先行词为后文整个句子，从句缺少宾语，且意为“正如”，应用as引导，同时该空置于句首，开头单词首字母大写。故填As。
2．考查冠词。句意：在烧伤治疗中，第一步也是最重要的一步是给予急救。结合句意，表示“第一”应用the first。故填The。
3．考查名词。句意：在烧伤治疗中，第一步也是最重要的一步是给予急救。此处应填名词作介词in的宾语，treat的名词形式为treatment，意为“治疗”，为不可数名词。故填treatment。
4．考查名词复数。句意：根据皮肤损伤的深度，烧伤分为三种类型。根据上文“three”可知，此处应用名词复数形式。故填types。
5．考查副词。句意：一度烧伤只影响皮肤表层，例如轻微的晒伤，皮肤会干燥、发红、轻微肿胀和疼痛。此处应用副词修饰形容词swollen，作状语。故填mildly。
6．考查非谓语动词。句意：由热液引起的二度烧伤会深入到皮肤表层以下，导致红肿、起泡和极度疼痛。句中go为谓语动词，此处应用非谓语动词作定语，修饰名词burns，且cause与burns之间为被动关系，应用过去分词形式。故填caused。
7．考查非谓语动词。句意：它们很严重，需要几周的时间才能好转。此处为固定句型：主语+时间+to do，表示“需要……去做某事”。故填to get。
8．考查语态。句意：三度烧伤会影响每一层，下面的组织往往可以看到，这需要立即住院治疗。情态动词can后接动词原形，主语the tissue与see之间为被动关系，空处应填be seen构成含有情态动词的被动语态。故填be seen。
9．考查非谓语动词。句意：如果你看到有人被烧伤，首先移除（烧伤部位的）衣服，除非你看到布料粘在烧伤部位，然后用冷水冲洗烧伤部位。此处应用非谓语动词作定语，修饰名词water，run与water之间为主动关系，且表示动作正在进行，应用现在分词形式。故填running。
10．考查介词。句意：然后轻轻擦干该区域，并用干燥、清洁的绷带覆盖该区域，以免感染。结合句意表示“用……”可知，此处应用介词with。故填with。
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