【弯道超车】Unit 2 On the money 核心语法之时间状语从句-2026-2027学年外研版(新教材)九年级英语上册精讲精练 (含答案解析)

资源下载
  1. 二一教育资源

【弯道超车】Unit 2 On the money 核心语法之时间状语从句-2026-2027学年外研版(新教材)九年级英语上册精讲精练 (含答案解析)

资源简介

/ 让学习更有效 新课备课备考 | 英语学科
2026-2027学年外研版九年级英语上册核心语法精讲精练
(新教材)Unit 2 On the money
核心语法:时间状语从句
一、核心概念
时间状语从句在复合句中充当时间状语,说明主句动作发生的时间。它由从属连词引导,放在主句之前或之后。
核心功能: 用一个句子来说明动作发生的“时间”。
位置:从句在前:引导词 + 从句, + 主句(用逗号隔开)
从句在后:主句 + 引导词 + 从句(不用逗号)
示例:When I arrived, the meeting had started.(当我到达时,会议已经开始了。)
I was watching TV when my mother came in.(我妈妈进来时,我正在看电视。)
二、常见引导词分类与详解
1. when(当……时候)
含义: 表示主句动作发生在从句动作的时间点上。从句动词可以是瞬间动词或延续性动词。
例句:
When I arrived at the station, the train had left.(当我到达车站时,火车已经开走了。)→ 瞬间动词
When I was a child, I lived in the countryside.(我小时候住在农村。)→ 状态动词
I was sleeping when the earthquake happened.(地震发生时我正在睡觉。)→ 瞬间动词
2. while(当……时候,在……期间)
含义: 强调主句和从句动作同时持续进行。从句动词必须是延续性动词,且常用进行时。
例句:
While I was reading, my brother was playing.(我在读书时,弟弟在玩。)→ 两个动作同时进行
Please be quiet while others are studying.(别人学习时请保持安静。)→ 从句用进行时
While he was sleeping, someone stole his bag.(他睡觉时,有人偷了他的包。)
注意: while 从句中不能用瞬间动词!
While I arrived, he was leaving.
When I arrived, he was leaving.
3. as(一边……一边……;随着)
含义: 表示两个动作同时发生,强调伴随性。也可表示“随着……”的渐进变化。
例句:She sang as she walked.(她边走边唱。)
As time goes by, we become wiser.(随着时间的推移,我们变得更聪明。)
He smiled as he said goodbye.(他说再见时微笑着。)
when / while / as 对比:
when while as
动作类型 瞬间/延续 必须延续 延续
时间关系 某一时间点 同时持续 同时伴随
进行时要求 不必须 常用进行时 常用进行时
4. before(在……之前)
含义: 从句动作发生在主句动作之前。
例句:Please turn off the lights before you leave.(离开之前请关灯。)
I had breakfast before I went to school.(上学之前我吃了早饭。)
Think it over before you make a decision.(做决定之前先想清楚。)
5. after(在……之后)
含义: 从句动作发生在主句动作之后。
例句:After I finished my homework, I went out to play.(做完作业后,我出去玩了。)
We went home after the movie ended.(电影结束后我们回家了。)
After he arrives, we will start the meeting.(他到了之后,我们就开始会议。)
6. until / till(直到……为止)
含义: 主句动作一直持续到从句动作发生为止。
用法区别:
肯定句 + until:主句动词必须是延续性动词(wait, stay, work, sleep等)
否定句 + until(直到……才):主句动词可以是瞬间动词(leave, go, stop, finish等)
例句:
I waited at the bus stop until the bus came.(我在公交车站一直等到公交车来。)→ 延续动词
She didn't go to bed until her mother came back.(她直到妈妈回来才睡觉。)→ 瞬间动词 + 否定
Please stay here until I return.(请待在这里直到我回来。)→ 延续动词
7. since(自从……以来)
含义: 表示从过去某个时间点一直持续到现在。
结构: 主句(现在完成时)+ since + 从句(一般过去时)
例句:I have lived here since I was born.(我自出生起就住在这里。)
She has worked in this company since she graduated from college.(她自从大学毕业就在这家公司工作。)
Great changes have taken place since he left.(自从他离开后,发生了巨大的变化。)
8. as soon as(一……就……)
含义: 表示两个动作紧接着发生,时间间隔很短。
例句:I will call you as soon as I arrive in Beijing.(我一到北京就给你打电话。)→ 主将从现
As soon as I got home, it began to rain.(我一到家就开始下雨了。)→ 过去时
He fell asleep as soon as he lay down.(他一躺下就睡着了。)
三、核心语法规则:“主将从现”(中考必考!)
规则: 在时间状语从句中,如果主句是将来时,从句用一般现在时表示将来。
结构: 主句(将来时)+ 引导词 + 从句(一般现在时)
例句:
I will call you when I arrive in Beijing.(我到北京时会给你打电话。)→ 主句将来时,从句用一般现在时
We will have dinner after he comes back.(他回来后我们就吃晚饭。)→ 同上
Please wait here until the bus stops.(请在这里等到公交车停下来。)→ 祈使句也表将来
As soon as he arrives, I will tell him the news.(他一到我就告诉他这个消息。)
易错提醒: 从句中不能用 will 表将来!
I will call you when I will arrive.
I will call you when I arrive.
四、when 与 while 的深度辨析(高频考点)
对比维度 when while
从句动词 瞬间动词 或 延续性动词 必须是延续性动词
从句时态 一般过去时 或 过去进行时 必须用进行时(过去/现在)
强调重点 某一时间点 同时持续的过程
典型例句 When I arrived, he was leaving. While I was reading, he came in.
表示习惯 When I was young... While I was growing up...
判断技巧:
从句动词是瞬间动词(arrive, see, leave)→ 用 when
从句动词是延续动词(read, sleep, work)→ 用 when 或 while
从句是进行时,强调“在……过程中”→ 用 while
对比例句:
When I saw him, he was running.(看到他的那一刻,他正在跑。)→ 瞬间动作
While I was reading, the phone rang.(我正在读书时,电话响了。)→ 持续过程
When I was young, I lived in the country.(我小时候住在农村。)→ 状态动词
五、易错点与难点突破
1. 从句中误用将来时
I will wait here until you will come back.
I will wait here until you come back.
2. before 和 after 的时态混淆
After I come home, I had dinner.(过去时态不一致)
After I came home, I had dinner.
Before he arrived, I have already left.(应为过去完成时)
Before he arrived, I had already left.
3. since 的时态错误
Since I have come here, I made many friends.
Since I came here, I have made many friends.
I lived here since I was born.
I have lived here since I was born.
4. until 与 not...until 的混淆
I didn't wait until he came back.(wait 是延续动词,用肯定)
I waited until he came back.
I left until he came back.(leave 是瞬间动词,用否定)
I didn't leave until he came back.
5. when 与 while 的选择错误
While I arrived, he was leaving.
When I arrived, he was leaving.
When I was reading, the phone rang.(when 也可用,但 while 更强调“过程”)
While I was reading, the phone rang.
六、思维导图总结
七、记忆口诀
引导词口诀:
when, while, as 表时间,before, after 前后连;
until 直到……才,since 自从主完现;
as soon as 一……就,主将从现记心间。
when/while 口诀:
when 可长也可短,while 必须长持续;
when 接过时也接进,while 接进不接过;
when 表时间点,while 表过程。
主将从现口诀:
时间条件状语句,主将从现要牢记;
主句将来从句现,will 不能从句现。
1. We didn't leave school yesterday ____ we cleaned the classroom carefully.
A.when B.since C.until D.if
2.It's almost eight years we saw each other last time.
A.before B.since C.after D.when
3.She _______ to read books when she was 3 years old.
A.begins B.began C.beginning D.begin
4. —Tomorrow will be Father's Day. What will you do for your father
—I will say "I love you, Daddy" as soon as he ____ up.
A.will wake B.is waking C.wakes D.woke
5.When you go to sleep, don't keep your bedroom light ________.
A.on B.close C.open
6.It's a long time ago ______ I saw you last time.
A.when B.since C.for D.that
7. I was doing my homework yesterday evening, Mother was cooking dinner.
A.When B.While C.As D.Since
8.—Excuse me, can you tell me the way to the nearest underground station
—Walking straight on ____ you see a white building. It's right there.
A.though B.since C.until D.if
9.They arrived while we ________ dinner.
A.were having B.was having C.have D.will have
10.We'll go out for a walk as soon as it .
A.stops to rain B.stops raining C.will stop raining
11.Tom knew nothing his friend told him.
A.because B.until C.since D.if
12. I didn't play soccer ____ I finish the homework.
A.so B.if C.until
13. You can go to Yunnan Road ____ you want to try Shanghai local snacks.
A.because B.although C.until D.if
14.It has been three years since I ______ a teacher.
A.become B.became C.becoming D.to become
15.Tom you as soon as he home.
A.calls, arrives B.will call, arrives C.arrives, will arrive
16.The kids went crazy the film star appeared.
A.until B.why C.when
17.Our teachers have been with us for nearly three years _______ we came to junior high school. We should thank them for what they have done for us.
A.until B.before C.since
18.—Peter, please ask Tom to my office as soon as he _______ back tomorrow.
—OK, I will.
A.come B.coming C.will come D.comes
19.——I am going to Qingdao and stay there for a week.
——______ you are there, would you please buy some books for me
A.If B.While C.Since D.As soon as
20.I met my teacher ____ I was walking in the street, but I didn't say hello to him.
A.before B.after C.until D.while
21.I don't know when he______ tomorrow .When he_____ , I'll let you know.
A.comes ;comes B.will come ; comes
C.comes ; will come D.came; will come
22.____ I saw the photos, it reminded me of the time we lived together.
A.At times B.Every time
C.At a time D.The first time
23. While having dinner in China,the young often wait ____the elders take their seats.
A.until B.after C.when
24. It's raining too hard outside, we don't leave____ the rain stops.
A.if B.after C.when D.until
25.When we building the Subway Line 3, it will be easier to travel around the city.
A.finish B.finished C.will finish
26.I'll go to visit my aunt in England ___________ the summer holidays start.
A.while B.since C.until D.as soon as
27.We don't know the love of our parents ________ we become parents ourselves one day.
A.if B.when C.after D.until
28.It was 19 years _______ Mandela was set free from prison (监狱).
A.before B.since C.until D.if
29.— Why didn't you try your best to get on the subway
— I tried to, but it started moving ______ I could get on it.
A.before B.after C.since D.if
30.My sister ______ go to bed _______ my mother came back last night.
A.not until B.doesn't; until
C.didn't; until D.aren't; until
31. —Mom, shall I meet my cousin at the station when he ____ tomorrow
—Yes, you must be there on time.
A.will arrive B.arrived
C.arrives D.is going to arrive
32.I hurt myself while I _____ up the hill.
A.was climbing B.climb C.climbs D.climbed
33.When he _______ back, I _______ him the truth.
A.comes; will tell. B.will come, will tell
C.comes; tell D.will come, tell
34. he sees people in trouble,he always gives them a hand.
A.Every time B.The next time
C.The first time D. The moment
35.His father has worked in this factory _____ he came here in 1980.
A.since B.for C.when D.how long
36.—John didn't stop looking for a job ____ he got an offer from a German company.
— Lucky him. It's not easy to get a good job now.
A.until B.while C.since D.if
37. I didn't realize she was a famous singer____she took off her sunglasses.
A.until B.when C.after D.while
38.—Jerry, I've heard that you are coming to Beijing.
—Yes. As soon as I ______ in Beijing, I will call you.
A.arrive B.arrives C.will arrive D.arrived
39. Alice ____TV while her brother____ with the cat.
A.watched; played B.was watching; played
C.watched; were playing D.was watching; was playing
40.—Where's that report, Daniel
—I brought it to you you were in Mr. Black's office yesterday.
A.if B.when C.because D.before
41.—During breaks, most of us have fun playing ________ Andy is always learning.
—All work and no play make Jack a dull boy. I think Andy should have a rest.
A.since B.if C.after D.while
42.—When should I hand in my paper
—Your paper must as soon as the bell .
A.hand in; rings B.hand in; will ring
C.be handed in; will ring D.be handed in; rings
43.I don't know when he _____ next week. When he_____, please let me know.
A.comes, comes B.will come, will come
C.will come, comes D.comes, will come
44.—Mum, I'm dying for food. Can we have dinner now
—Dear, let's wait your dad comes back.
A.when B.after C.until D.while
45.—Do you often do exercise, Bill
—No. Actually, I haven't done much exercise________ I got a new computer.
A.for B.since C.unless D.although
46.—Many students are unhealthy because of a lack of exercise
—I agree. They should start exercising it's too late.
A.before B.until C.since D.after
47.The terrible earthquake ______ when I _______some cleaning.
A.starts, was doing B.started, was doing
C.was starting, was doing D.starts, were doing
48. ____ I heard the good news, I ran to tell my parents.
A.Because B.If C.Although D.As soon as
49.________I met some difficulties, Larry always came to help me.
A.Whether B.Whatever C.Whenever
50. —Mum, could I watch the game show now?
—Sorry, you can't watch it ____ you finish cleaning your room.
A.when B.if C.after D.until
参考答案及试题解析
1.C
【解析】句意:昨天直到我们仔细打扫完教室,我们才离开了学校。when当……时;since自从……;until直到……;if如果。根据"We didn't leave school"可知,此处为not...until结构,意为"直到……才……",故选C。
【点评】考查连词辨析以及时间状语从句。注意正确理解选项的意思,根据题目所给语境选择正确的连词。
2.B
【解析】句意:我们上次见面已经八年了。 固定句型:It is+时间+since….自从…以来有多久了,故选B。
【点评】考查固定句型:It is+时间+since…
3.B
【解析】句意:当她3岁时,她开始读书。根据was可知时态是一般过去时,所以begin用过去式began,故选B。
【点评】考查时间状语从句,注意识记实义动词的过去式。
4.C
【解析】句意:——明天就是父亲节了。你会为爸爸做什么呢?——爸爸一醒来,我就会说"爸爸,我爱你"。A将来时,B现在进行时,C单三式,D过去式,as soon as引导时间状语从句,时态是主将从现,从句用一般现在时,主语是第三人称单数,故用单三式,故选C。
【点评】考查时态,注意识记时间状语从句,一般现在时,主谓一致的用法。
5.A
【解析】句意:当你睡觉时,不要让卧室的灯开着。on,开着的(表电器、灯等处于工作状态),形容词;close,靠近的 / 关闭(动词),形容词或动词;open,打开的(表门、窗等处于开启状态),形容词或动词。结合语句 "When you go to sleep, don't keep your bedroom light …." 可知,描述 "灯是否开启" 需用 "on","keep the light on" 是固定搭配,意为 "让灯开着","close" 和 "open" 多用于描述门、窗等可开合物体的状态,不用于描述灯,故答案为 A。
【点评】考查形容词辨析及固定搭配。解题需明确 "on" 用于描述电器、灯的 "开启状态" 这一用法,牢记 "keep sth on" 的固定搭配,区分 "open/close" 与 "on/off" 的适用对象差异。
6.B
【解析】句意:自从我上次见你是很久之前了。since表示自从,构成固定句型:It is +一段时间+since+从句,表示自从…已经很长时间了,故选B
【点评】连词在中考中涉及到的很多,尤其在宾语从句、状语从句、定语从句中连词是必考点。平时学习过程中,掌握连词的意思,及所表示的关系是至关重要的,这种关系的判断可以通过句子意思的理解来选择恰到的连词。
7.B
【解析】句意:昨天晚上当我在做作业的时候,妈妈在做晚饭。while连词,当…时候,引导时间状语从句,后跟进行时态。所以选B。
【点评】此题考查连词词义辨析。
8.C
【解析】句意:——打扰了,你能告诉我去最近的地铁站的路吗?——直走直到你看到一栋白色的建筑物。它在那右边。though尽管;since既然;until直到…… 才;if如果。由语句Walking straight on……you see a white building. It's right there.可知,这里表示Walk straight这一动作一直持续到you see a white building,故答案为C。
【点评】考查连词辨析。熟知每个选项的基本含义,然后根据语境选择最佳选项,注意前后语句要连贯,句意要通顺。
9.A
【解析】句意:我们正在吃饭时,他们到了。A是过去进行时,B是过去进行时,C是动词原形,D是一般将来时,根据"They arrived while we…dinner."可知,句子为"while"引导的时间状语从句,主句时态为一般过去时,从句时态应为过去进行时,其谓语部分为:was/were doing。从句主语"We",第一人称复数,be动词应为"were","have"的现在分词为"having"。故选A。
【点评】考查动词的时态,注意while在过去进行时的用法。
10.B
【解析】句意:雨一停,我们就出去散步。这是as soon as引导的时间状语从句,时间状语从句应遵循主将从现的原则。因此使用一般现在时。stop to do停下来做某事,stop doing停止做某事,指天停止下雨,因此用raining,故答案是B。
【点评】考查时间状语从句主将从现的原则,考查stop to do与stop doing的区别。注意两者表达意思的不同。
11.B
【解析】句意:直到他的朋友告诉他,汤姆才知道这件事。because因为;until直到……为止;since自从;if如果,是否。not...until“直到……才”,根据句意, 故答案选B。
【点评】考查连词的用法。
12.C
【解析】句意:我直到做完作业才去踢足球。A所以,B如果,C直到,not...until,固定搭配,直到才,引导时间状语从句,故选C。
【点评】考查连词,注意识记not...until,时间状语从句的用法。
13.D
【解析】句意:如果你想尝尝上海当地的小吃,你可以去云南路。A.因为,表示原因;B.尽管,表示让步;C.直到;D.如果,表示条件。You can go to Yunnan Road你可以去云南路,you want to try Shanghai local snacks你想尝尝上海当地的小吃,可知讲的是你可以去云南路的条件是你想尝尝上海当地的小吃,故选D。
【点评】考查连词辨析,首先理解连词词义,然后根据前后句句意确定连词。
14.B
【解析】题意:现在完成时里,since从句里动词应用一般过去时。故选B。
【点评】考查现在完成时和表示一段时间的时间状语的连用用法,理解题意,即可得出答案。
15.B
【解析】句意:汤姆一到家就给你打电话。as soon as,一……就……,引导时间状语从句,主句要用一般将来时,从句要用一般现在时。空一,主句用一般将来时,will call;空二,从句用一般现在时,主语是he,动词要用第三人称单数形式,故选B。
【点评】考查as soon as引导的时间状语从句。注意其时态规则“主将从现”。
16.C
【解析】句意:当电影明星出现时,孩子们疯狂了。A.直到;B.为什么;C当……时候。前后两个动作同时发生,因此本句为when引导的时间状语从句,故答案是C。
【点评】考查when连接的时间转语从句。
17.C
【解析】自从我们来到中学到现在,我们的老师和我们一起几乎三年了。我们应该感谢他们为我们所做的一切。根据句意可知本题让我们选择引出时间状语的介词。A. until直到;B. before在…..之前;C. since自从;与we came to junior high school.组合。A和B选项均不符合句意表达需要,故选C。
【点评】A和B所引出的时间状语不能与现在完成时态连用
18.D
【解析】句意是:——彼得,明天汤姆一回来就告诉他来我办公室。——好的,我会告诉他的。as soon as 一……就……,引导时间状语从句,时态用主将从现,从句的主语he是第三人称单数,动词用三单形式comes,故选 D。
19.B
【解析】句意:你在那儿时能给我买一些书吗?A. If如果; B. While在……时候; C. Since自从;D. As soon as一……就……,根据上文“我”已打算去青岛,所以应选while,故选B。
【点评】考查连词
20.D
【解析】句意:当我在街上散步的时候遇到了我的老师,但我没有跟他打招呼。A:before"在……之前 ";B:after"在……之后";C:until"直到";D:while "当……时候"。此处表示我在街上散步的时候,应用while引导时间状语从句,故选D。
【点评】考查状语从句,本题涉及while引导的时间状语从句。
21.B
【解析】句意:我不知道他明天什么时候来。当他来的时候,我会让你知道。When引导的宾语从句,主现从任意,从句根据实际情况而定。第一个句子从句时间状语是tomorrow,因此用将来时。When引导的时间状语从句,主将从现。故选B。
【点评】考查宾语从句和时间状语从句的用法。
22.B
【解析】句意:每次我看到这些照片,都会想起我们一起生活的时光。at times有时;every time每次;at a time一次;the first time第一次。根据下文 it reminded me of the time we lived together. 可知每次我看到这些照片,此处用名词短语引导的时间状语从句,故选B。
【点评】考查名词短语引导的时间状语从句。理解所给短语的词义和用法,根据语境,选出正确的短语。
23.A
【解析】句意:当在中国吃晚餐的时候,年轻人通常要等到老年人就坐了才能上桌。A直到,B在……之后,C当……时,根据the young often wait ____the elders take their seats和生活常识。可知表示等待的动作一直持续到老年人就坐。故选A。
【点评】考查连词,注意识记until的用法。
24.D
【解析】句意:外面雨下得太大了,我们要等到雨停了才离开。if如果、是否; after在之后; when当……时候; until直到。结合语句 It's raining too hard outside, we don't leave…the rain stops. 可知,not…until"直到……才",固定搭配。故答案为D。
【点评】考查介词辨析。注意固定结构not…until…的含义及用法。
25.A
【解析】句意:当我们完成建立地铁3号时,环游这个城市将是更简单的。A.一般现在时;B.一般过去时;C.一般将来时。when引导的时间状语从句,从句用一般现在时,故选A。
【点评】考查时间状语从句,注意平时识记其用法,理解句意。
26.D
【解析】A. while 当…时候 B.since 自从…以来 C.until 直到 D. as soon as一…就… 。句意:一放暑假我就会去拜访在英国的姑姑。as soon as一…就…根据句子意思,故选D。
【点评】考查连词的用法,易错点是不能正确理解句子意思。
27.D
【解析】句意:直到有一天我们自己成为父母,我们才知道父母的爱。if 如果;when当……的时候;after在……以后;until直到,和not连用表示"直到……才"。 根据We don't know the love of our parents 我们不知道父母的爱,可知应是表示"直到我们自己成为父母才知道",应用固定搭配not …until…"不……直到……"。故选D。
【点评】考查连词辨析。注意熟记固定搭配not …until…"不……直到……"。
28.A
【解析】句意:过了19年曼德拉才从监狱里被释放出来。before在……之前;since自从;until直到;if如果。本句表示“在曼德拉被释放前过了19年时间”,所以用before。而since的句型应是:It is 19 years since……。故答案为A。
【点评】考查连词辨析,掌握before和since的基本意思,注意两者在时态上的差异。
29.A
【解析】句意:——为什么你不尽最大的努力坐上地铁呢?——我试过了,但是我还没来得及登上地铁,它就开始移动了。A. before在……之前; B. after在……之后; C. since自从;D. if如果。结合句意,他没有坐上地铁,因此是在登上地铁之前,地铁就开始动了,故用连词before。故选A。
【点评】考查连词的用法。
30.C
【解析】句意:我妹妹昨晚直到我妈妈回来才上床睡觉。固定短语not…until…直到……才……,last night昨晚,是一般过去时态,所以此句借助助动词did,故选C。
【点评】考查固定搭配。
31.C
【解析】句意:——妈妈,明天我表哥到车站时我要去车站接他吗?——是的,你一定要准时到。A将来时,B过去时,C单三式,D将来时,when引导时间状语从句,时态是主将从现,故从句时态是一般现在时,主语是第三人称单数,故用单三式,故选C。
【点评】考查时态,注意识记一般现在时的用法。
32.A
【解析】句意:我在上山的时候伤了自己。根据while,引导时间状语从句,表示动作同时发生,后接进行时,事情已经发生了,因此用过去进行时,was climbing,故选A。
【点评】考查while引导的时间状语从句,注意过去进行时的用法。
33.A
【解析】句意:当他回来时,我将告诉他事实。when引导时间状语从句,tell the truth是他将要去做的事情,用一般将来时,will+动词原形。从句come back是tell the truth的前提,表示假设,条件,用一般将来时。故选A。
【点评】考查when引导的时间状语从句,遵循主将从现原则。
34.A
【解析】句意:每次他看见有困难的人,都会助他们一臂之力。考查连词短语:A. Every time 每次B.The next time下一次 C. The first time第一次,D.The moment一…就,,故选A。
【点评】考查时间状语从句的名词短语辨析。
35.A
【解析】句意:自从他1980年来到这里,他父亲就一直在这家工厂工作。since自从;for因为;when当……的时候;how long多久。分析句子结构,此句是since引导的时间状语从句,故选A。
【点评】考查连词辨析,注意since引导的时间状语从句的用法。
36.A
【解析】句意: —— 约翰一直在找工作,直到他得到一家德国公司的录用通知。 —— 他很幸运。现在找一份好工作不容易。A.直到;B.当……时候;C.自从;D.如果。此处是固定搭配not…until…直到……才……,故选A。
【点评】考查连词辨析和固定搭配。注意固定搭配not…until…。
37.A
【解析】句意:"直到她摘下太阳镜,我才意识到她是一位著名歌手",从语义上看,"意识到" 这个瞬间动作发生在 "摘下墨镜" 这个时间点之后,符合 not...until... 的固定结构,意为 "直到…… 才……";when 表 "当…… 时"、after 表 "在…… 之后"、while 表 "当…… 时(后接延续性动词)",均不符合该固定结构与语境逻辑,故答案为 A。
【点评】考查时间状语从句连词的语境运用,注意掌握 not...until... 的固定句式,区分瞬间动词与延续性动词在时间状语从句中的用法差异。
38.A
【解析】句意:——杰瑞,我听说你要来北京。——是的。我一到北京,就给你打电话。A动词原形,B动词单三式,C一般将来时,D一般过去时,根据"As soon as I…in Beijing, I will call you."可知,as soon as引导时间状语从句,遵循"主将从现"原则,主句用一般将来时,从句用一般现在时;从句中,I作主语,谓语动词应用动词原形。故选A。
【点评】考查时态。掌握时间状语从句的时态搭配规则,注意区分主句和从句的时态要求,确认主语与谓语动词的搭配形式。
39.D
【解析】句意:爱丽丝的弟弟在和猫玩的时候,她正在看电视。watch观看,动词,play玩,动词,此处是while引导的时间状语从句,表示主句动作在过去发生时,从句动作正在发生,所以主句和从句都用过去进行时,用was/were doing形式,故选D。
【点评】考查时间状语从句和过去进行时。注意根据语境选择正确的时态。
40.B
【解析】if是否,如果;when当……时;because因为;before在……之前。句意:丹尼尔,那个报告在哪儿?——昨天当你在布莱克的办公室时,我拿给你了。结合语境可知选B。
【点评】考查连词辨析
41.D
【解析】句意:——休息时,我们大多数人都玩得很开心,而安迪则一直在学习。——只工作不玩耍,聪明孩子也变傻。我认为安迪应该休息一下。since自从;if如果;after在……之后;while然而。根据"During breaks, most of us have fun playing …Andy is always learning."可知,此处表示从句的动作和主句动作同时发生,应用while引导时间状语从句。故选D。
【点评】考查连词辨析,首先理解连词词义,然后根据前后句句意确定答案。
42.D
【解析】句意为:——我应该什么时候交卷子?——铃声一响你的卷子就必须得交上来。根据as soon as“一……就……”引导的时间状语从句时态为主将从现,可知从句用一般现在时;主语your paper与上交之间是被动关系,用被动语态be+过去分词。故选D。
【点评】本题考查含有情态动词的被动语态和状语从句。
43.C
【解析】句意:我不知道他下周何时过来,当他来的时候,请让我知道。本题的第一个when引导的从句是一个宾语从句,在宾语从句中谓语动词要用一般将来时表示将来发生的动作;第二个when引导的从句是一个时间状语从句。在状语从句中,谓语动词要用一般现在时表示将来发生的动作。故答案为C。
【分析】考查复合句中的时态。
44.C
【解析】句意:妈妈,我快要饿死了,我们现在可以吃晚饭了吗?亲爱的,让我们等到你爸爸回来的时候再吃吧。when”当...…时候“;after”在…...之后“;until”直到…...时候“;while”当...…时候“。根据句意可知,这里是说直到爸爸回来才吃饭,故应选C。
【点评】考查状语从句,本题涉及until引导的时间状语从句的应用。
45.B
【解析】句意:——Bill,你经常运动吗?——不,事实上,我自从有了新电脑我就不做那么多运动了。根据 I haven't done可知,时态是现在完成时,since引导现在完成时,自从,故选B。
【点评】考查连词辨析,注意时间状语从句since的用法。
46.A
【解析】句意:因为缺乏锻炼,许多学生都不健康。——我同意。他们应该开始锻炼,不要等到来不及了。A. before 在……之前;B. until到……为止;C. since 自从;D. after在……之后。此处it's too late与before共同组成从句,表示“不要等到为时已晚;趁着还来得及”,这是一种常见用法。故答案为A。
47.B
【解析】句意是:当我正在打扫卫生的时候地震发生了。“打扫卫生”是延续性动词,用过去进行时,“地震发生”为短暂性动词,用一般过去时,故选B。
【点评】本题考查when引导的时间状语从句,主句与从句的时态须保持一致。
48.D
【解析】句意:我一听到这个好消息,就跑去告诉我的父母。Because因为;If如果;Although虽然;As soon as一……就……。根据"I heard the good news, I ran to tell my parents."可知,此处用as soon as引导时间状语从句,应该说一听到这个好消息,就跑去告诉父母。故选D。
【点评】考查连词辨析。注意正确分析句子结构以及句子内部语义上的逻辑关系,结合选项意思的正确理解以及题目所给语境,选择正确的连词。
49.C
【解析】句意:每当我遇到一些困难,拉里总是来帮助我。A: Whether是否。B: Whatever无论。C: Whenever无论。根据always总是,可知空格是和时间相关的词语,只有C符合,故选C。
【点评】考查时间状语从句。注意区分主从复合句,结合语境选出正确选项。
50.D
【解析】句意:——妈妈,我现在可以看游戏节目吗?——抱歉,你要直到打扫完房间才能看。when当…时候;if如果;after在…之后;until直到。答语使用了"not...until..."的固定句型,意为"直到……才……",符合"打扫完房间才能看电视"的语境逻辑,只有until符合该固定搭配。故选D。
【点评】本题考查的核心知识点是连词词义辨析及"not...until..."固定句型的用法。关键注意事项是要识别该固定句型的结构,同时结合对话的逻辑关系判断连词的匹配性。
21世纪教育网(www.21cnjy.com)

展开更多......

收起↑

资源预览