资源简介
(共85张PPT)
1
电子教案
《对口升学 英语总复习》
第一部分 基 础 知 识
第十二章 句 子
第五节 复合句-状语从句
第3页,共85页
四、状语从句
用来修饰主句中的动词、副词和形容词以及整个句子的从句叫状语从句。根据其含义,状语从句可分为时间状语从句、地点状语从句、条件状语从句、原因状语从句、目的状语从句、结果状语从句、让步状语从句、比较状语从句和方式状语从句。具体见下表。
第4页,共85页
状语从句的分类 引导词 例句
时间状 语从句 when/while/as(当……时), before(在……之前), after(在……之后), since(自从), not...until...(直到……才……), as soon as(一……就……), the moment/minute(一……就……), directly/immediately(一……就……), no sooner...than...(一……就……), hardly...when...(一……就……) I was doing my homework when he came.他来的时候,我正在做家庭作业。
He did not go to bed until his father came back.直到爸爸回来他才去睡觉。
第5页,共85页
状语从句的分类 引导词 例句
地点状 语从句 where(……的地方), wherever(无论哪里) Put it where we can all see it.
把它放在我们都能看到的位置。
条件状 语从句 if(如果), as long as(只要), unless (除非) As long as I am alive, I will go on studying. 只要我活着,我就要学习。
续表
第6页,共85页
状语从句的分类 引导词 例句
原因状 语从句 because(因为), since(既然), as(由于), now that(既然), for(因为) I like to eat apples because it's good for my health. 我喜欢吃苹果,因为它对我的健康有益。
Since we live near the sea, we enjoy nice weather.由于住在海边,我们能享受到好天气。
续表
第7页,共85页
状语从句的分类 引导词 例句
目的状 语从句 so that(以便,为了), in order that(为了) He gets up early every morning so that he can catch the bus.
他每天早上起得都很早,以便能赶上公共汽车。
结果状 语从句 so that(结果是……), so...that.../such...that...(如此……以至于……) He was so angry that he couldn't say a word. 他气得说不出话了。
续表
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状语从句的分类 引导词 例句
让步状 语从句 though/although/as(尽管,虽然), even if(即使), whatever(无论什么), wherever(无论哪里), whenever(无论何时) The air is around us, though we can't see it. 尽管我们看不到空气,但它在我们周围。
Whenever you come, I will wait for you.无论你什么时候来,我都会等你。
续表
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状语从句的分类 引导词 例句
比较状 语从句 than(比……), as...as...(和……一样), not as/so...as...(不如……),the+比较级,the+比较级(越……,越……) He is as tall as Tom.
他和汤姆一样高。
方式状 语从句 as...so...(犹如,好像), as if/as though(好像,仿佛),as/just as(正如) As water is to fish, so air is to man.我们离不开空气,犹如鱼儿离不开水。
续表
第10页,共85页
1. 时间状语从句
(1)引导词when、 while、 as的区别
分类 说明 例句
when when既可以指时间点,与瞬间性动词连用;也可以指时间段,与延续性动词连用,这时相当于while When I got to the airport, the plane had left. 当我赶到机场时,飞机已经离开了。
When/While we were dancing, a stranger came in. 当我们跳舞时,一位陌生人走了进来。
第11页,共85页
分类 说明 例句
while while表示时间段,因此从句的谓语动词要用延续性动词 Please don't talk so loud while others are working.
别人工作的时候,请不要大声讲话。
Strike while the iron is hot. 趁热打铁。
续表
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分类 说明 例句
as as着重强调主句动作与从句动作同时发生,有“一边……一边……”之意 As you get older, you get more knowledge.随着年龄的增长,你获得的知识就越多。
The students took notes as they listened. 学生们边听课边做笔记。
续表
第13页,共85页
(2)until和till 的用法
①这两个连词意义相同, till比较口语化, until比较正式。在肯定句中,它们可以互换;在否定句、强调句或位于句首时,一般用until。
Until you told me, I had heard nothing of what happened.
直到你告诉我,以前出了什么事我一点也不知道。
I didn't manage to do it until you had explained how. 直到你教我后,我才会做。
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②在带有till或until引导的时间状语从句的主从复合句里,如果主句用肯定式,其含义是“做某事一直到……时”,谓语动词只能用延续性动词;如果主句用否定式,其含义是“直到……才做某事”,谓语动词可用瞬间性动词。
Let's wait until/till the rain stops. 让我们一直等到雨停吧。
Don't get off the bus until it has stopped. 公共汽车停稳后再下车。
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(3)before的用法
①before引导时间状语从句,此时从句中往往会出现情态动词。
He rushed out of the room before I could say a word.
我还没来得及说一句话,他就冲出了房间。
They had not been married four months before they were divorced.
他们结婚还不到四个月就离婚了。
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②It was/will be+时间段+before...意为“……之后才……”。
It was a long time before I went to sleep again.
过了很长时间我才再次睡着。
It will be four days before they come back.
他们要过四天才能回来。
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(4)since的用法
since意为“……以来”,引导从句时,一般情况下,从句的谓语动词可以是延续性动词,也可以是非延续性动词。一般情况下,从句谓语动词用一般过去时,主句谓语动词用现在完成时。但在句型“It is/has been+时间段+since从句”中,主句可用一般现在时。
I have been in Beijing since you left. 自从你离开以来,我一直在北京。
It is/has been four years since he joined the army. 他参军四年了。
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(5)表示“一……就……”的时间状语引导词的用法
as soon as、 directly、 hardly/scarcely...when...、 no sooner...than...等引导时间状语从句,意为“一……就……”。
As soon as I reach Canada, I will ring you up. 我一到加拿大,就给你打电话。
Hardly had the performance begun when the lights went out. 演出刚开始就停电了。
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No sooner had I arrived home than it began to rain. 我刚到家,天就开始下雨了。
注:hardly、no sooner位于句首时要使用倒装结构。
(6)在时间状语从句中,要注意时态一致。一般情况下,主句是将来时的时候,或表示将来的祈使句,从句要用一般现在时(主将从现,主祈从现)
I will visit my good friend when I have time. 当我有时间时,我将去看望我的好友。
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Please tell me as soon as your father comes back. 当你爸爸回来时,请告诉我。
(7)有些名词也可以引导时间状语从句。如:the moment、 the minute、 the instance、 every time、 each time、 the first time等
(8)当表达“正要做某事或刚要做某事时,突然发生某事”,用句型“...was/were doing...when...;...was/were about to do...when...”
第21页,共85页
We were chatting happily when the teacher came. 我们正聊得开心,突然老师来了。
He was about to leave when it began to rain. 他正要离开,这时突然下雨了。
2. 地点状语从句
地点状语从句表示主句动作发生的地点,常由where和wherever引导。
Where there is a will, there is a way. 有志者,事竟成。
第22页,共85页
You should have put the book where you found it. 你应该把书放回你拿的地方。
I'll go wherever you go. 无论你去哪里,我都跟着去。
Sit wherever you like. 请随便坐。
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3. 条件状语从句
分类 说明 例句
条件状语从句用来表示谓语动词发生的条件 引导条件状语从句的连词有if(万一,如果)、 unless(除非;如果不)、 as/so long as(只要)、 in case(以防)等 If the rain stops, I shall go out for a walk.如果雨停了,我就出去散步。
I'll go there tomorrow unless it rains.除非下雨,否则我明天会去那里。
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分类 说明 例句
条件状语从句用来表示谓语动词发生的条件 引导条件状语从句的连词有if(万一,如果)、 unless(除非;如果不)、 as/so long as(只要)、 in case(以防)等 You may borrow my book as long as you keep it clean. 只要你保持书的清洁,你就可以把我的书借去。
Take your umbrella in case it rains.
带着你的伞吧,以防下雨。
续表
第25页,共85页
分类 说明 例句
主将从现 在条件状语从句中,一般情况下,主句是将来时,或表示将来的祈使句,从句要用一般现在时(主将从现,主祈从现) I'll help you with your English if I am free tomorrow. 如果我明天有空,我就帮你学英语。
Remember to tell me if you have a fever.如果你发烧了,记得告诉我。
续表
第26页,共85页
分类 说明 例句
祈使句+and/or+陈述句 “祈使句+and/or+陈述句”在意思上相当于一个带有条件状语从句的复合句 Hurry up, or you'll be late.
=If you don't hurry up, you'll be late. 快点,否则你要迟到了。
Study hard and you will pass the exam.
=If you study hard, you will pass the exam.好好学习,你会通过考试的。
续表
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4. 原因状语从句
(1)原因状语从句通常由because、 since、 as、 now that等引导
He didn't come to school because he was ill. 他没去上学,因为他生病了。
Since you can't answer the question, I'll ask someone else.
既然你不能回答这个问题,我就问别人。
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(2)because、 as、 since、 for的用法
①because表示直接原因,语气最强,其引导的原因状语从句多放在主句之后或回答由why提出的问题;as和since的语气较弱,一般用来表示明显的原因,其引导的原因状语从句多放在句首。
—Why aren't you going there 你为什么不去那儿?
—Because I don't want to. 因为我不想去。
Since we have no money, we can't buy it. 既然我们没钱,我们就不能买它。
第29页,共85页
As it is raining, we shall not go to the zoo. 因为下雨,我们不能去动物园了。
for从语法上来说,用来引导表原因的并列句,它不表示直接原因,而是对前面分句进行补充说明或说明推断的理由,前后两个句子的逻辑关系不一定是因果关系,且它所引导的句子常用逗号隔开,不能放在句首。试比较下列两组句子:
Mary must have stayed up late last night, for she got up late this morning.(推断的原因)
玛丽昨晚肯定熬夜了,因为她今天早上起得很晚。
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Mary got up late this morning because she stayed up late last night.(直接原因)
因为玛丽昨晚熬夜了,所以她今天早上起得很晚。
He must be ill, for he is absent today.(推断的原因)
他一定是病了,因为他今天缺席。
Because he is ill, he is absent today.(直接原因)
因为他病了,所以今天缺席。
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②because和so不能用在同一个句子里。
汉语习惯上说“因为……所以……”,但英语中习惯上却不能将so与because连用。
Because it was raining, so we stayed at home. (×)
Because it was raining, we stayed at home. (√)
=It was raining, so we stayed at home. (√) 因为下雨,所以我们待在家里。
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③because从句与because of短语的转换。
because引导的原因状语从句有时可与because of短语转换。
I said nothing about it because his wife was there.
=I said nothing about it because of his wife's being there.
因为他妻子在那儿,所以我对此事只字未提。
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5. 目的状语从句
(1)目的状语从句通常由that、 so that、 in order that等引导
Mr. Smith speaks slowly so that the students can hear him clearly.
史密斯先生说话很慢,以便学生们能够听清楚。
注:so that引导目的状语从句时,有时可省略so而只用that。
Bring it closer that I might see it better.
拿近些,使我能看得清楚些。
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(2)目的状语从句与状语短语的转换
He got up early so that he could catch the early bus.
=He got up early so as to catch the early bus. 他起床很早以便能赶上早班公共汽车。
In order that we don't get infected by the virus, we'd better wash our hands often.
=In order not to get infected by the virus, we'd better wash our hands often.
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为了不被病毒感染,我们最好常洗手。
注:in order that、 so that、 in order to、 so as to 的用法区别。
共同点:它们都可以引导目的状语,表示“为了”。
不同点:in order that 和 so that 后接从句,in order that 可位于句首,而so that 不能位于句首;in order to 和 so as to 后接动词原形,in order to 可位于句首,而so as to不能位于句首,如果表达否定的目的时,则用in order not to do 和 so as not to do。
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6. 结果状语从句
(1)结果状语从句用来表示谓语动词所带来的结果,可由so...that...、 such...that...、 so that引导
He was so excited that he couldn't say a word. 他激动得一句话也说不出来。
She is such a good teacher that everybody likes her. 她是一个好老师以至于每个人都喜欢她。
(2)so...that...与such...that...的用法比较
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分类 说明 句型 例句
so... that... so...that...引导的结果状语从句中, so是副词,可修饰形容词或副词 (1)so+形容词/副词+that从句 (2)so+形容词+a/an+单数可数名词+that从句 Their dog was so fierce that no one dared come near it. 他们的狗太凶猛了,没人敢靠近它。
It's so interesting a film that we all want to see it.
这电影很有趣,我们都想看。
第38页,共85页
分类 说明 句型 例句
so... that... so...that...引导的结果状语从句中, so是副词,可修饰形容词或副词 (3)so+many/ much/few/little+名词+that从句(名词前有many, much, few, little表示数量的多少) He earns so little money that he can hardly feed his family. 他赚的钱很少以至于几乎不能养家糊口。
She made so many mistakes that she didn't pass the exam.
她犯了很多错误以至于没能通过考试。
续表
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分类 说明 句型 例句
such...that... such...that...引导的结果状语从句中,such是形容词,修饰名词 (1)such+a/an+形容词+单数可数名词+that从句 (2)such+形容词+复数可数名词+that从句 This was such a good film that I went to see it several times.
这部电影是如此的好看,以至于我看了几遍。
They are such clever children that we all like them. 这些孩子很聪明,我们都很喜欢。
续表
第40页,共85页
分类 说明 句型 例句
such...that... such...that...引导的结果状语从句中,such是形容词,修饰名词 (3)such+形容词+不可数名词+that从句 It was such bad weather that I had to stay at home. 天气是如此的糟糕以至于我不得不待在家里。
续表
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7. 让步状语从句
分类 说明 例句
让步状语从句 汉语中可说“虽然……但是……”,但按英语习惯,通常不能用although...but...和though...but...,但可以和副词still、 yet 连用 Although it is dangerous, but I will try. (×)
Although it is dangerous, I will try. (√)
It is dangerous, but I will try. (√)
虽然很危险,但我要试试。
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分类 说明 例句
让步状语从句 as(虽然,尽管) 引导让步状语从句时,从句要倒装,即把表语、状语或动词原形提到as 之前,表语是名词时,前面不用冠词。though也可用于这样的结构中,但although不可以这样用 Poor though I am, I can afford it.
我虽然穷,但这东西还是买得起的。
Hard as/though he works, he makes little progress.
=Though he works hard, he makes little progress.
尽管他学习很努力,但几乎没取得什么进步。
续表
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分类 说明 例句
让步状语从句 as(虽然,尽管) 引导让步状语从句时,从句要倒装,即把表语、状语或动词原形提到as 之前,表语是名词时,前面不用冠词。though也可用于这样的结构中,但although不可以这样用 Child as/though he was, he knew what was the right thing to do.
=Though he was a child, he knew what was the right thing to do.
虽然他是一个孩子,但他知道该做什么。
续表
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分类 说明 例句
让步状语从句 even if、 even though意为“即使”,含有一种假设。这两个复合连词的意思基本相同,它们常互换使用 Even though/if he is poor, she loves him.尽管他很穷,但她还是爱他。
续表
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分类 说明 例句
让步状语从句 whatever、 whoever、 however、 whenever、 wherever等引导的让步状语从句,通常可换成no matter... Whatever you say, I believe you.
=No matter what you say, I believe you.
无论你说什么,我都相信你。
No matter who you are, you must keep the law.
=Whoever you are, you must keep the law.
不管你是谁,你都需要遵纪守法。
续表
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8. 比较状语从句
比较状语从句表达人或事物的属性或特征的不同程度,常由as...as...(和……一样)、 not as/so...as...(不像……那样)、 than(比……)、“the+比较级, the+比较级”(越……,越……)等引导。
Our classroom is as big as theirs. 我们的教室跟他们的一样大。
This winter is not as/so cold as it was last winter. 今年冬天不像去年冬天那样冷。
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Jane is taller than her twin sister. 简比她的孪生姐姐高。
The more exercise you do, the healthier you will be. 你锻炼越多,就会越健康。
9. 方式状语从句
(1)方式状语从句表示主句中动作或状态的方式或方法,多半是用比喻说明主句内容或原物,使被说明的人、物形象具体化,常由as、 just as、 as if、 as though等引导
When in Rome, do as the Romans do. 入乡随俗。
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I will do as you told me. 我将会按照你告诉我的那样去做。
(2)as if/as though从句与虚拟语气
一般说来,若as if和as though从句所表示的内容可能为事实,则用陈述语气;若为假设或不大可能为事实,则用虚拟语气。
It looks as if the weather may pick up very soon. 看来天气很快就会好起来。
The teacher treated me as if I were her child. 老师待我就像对自己的孩子一样。
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( )1. (2017年对口升学考试试题)The shop assistant knew Jim ________ he often came to the shop.
A. unless B. that
C. because D. or
【点拨】 本题考查原因状语从句。句意:“这位店员知道吉姆,因为他常来店里。”
C
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( )2. (2018年对口升学考试试题)The sky was still dark ________ it was about noon.
A. though B. if
C. as D. because
【点拨】 本题考查让步状语从句。句意:“尽管已经快中午了,天还是很黑。”
A
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( )3. (2019年对口升学考试试题)I will give a party ________ I pass the exam.
A. if B. whether
C. though D. while
【点拨】 本题考查条件状语从句。句意:“如果我通过考试,我将举办一场派对。” 选项中只有if可以引导条件状语从句。
A
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( )4. (2020年对口升学考试试题)He wasn't tired ________ he didn't stop working all day.
A. when B. if C. since D. though
【点拨】 本题考查让步状语从句。句意:“虽然他整天不停地工作,但他不累。” though表示转折。
D
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( )5. (2021年对口升学考试试题)If you don't hurry, you ________ your train.
A. miss B. missed
C. will miss D. have missed
【点拨】 本题考查条件状语从句。句意:“如果你不快点,你将错过火车。” 条件状语从句遵循“主将从现”原则。
C
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( )6. (2021年对口升学考试试题)________ he is tall, he can't reach the orange on the tree.
A. When B. If
C. As D. Although
【点拨】 本题考查让步状语从句。句意:“虽然他高,但他还是够不着树上的橘子。”although表示转折。
D
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考点1 时间状语从句
( )1. He was about to leave ________ it began to rain.
A. while B. as C. before D. when
【解析】 本题考查时间状语从句。句意:“他刚准备离开,突然天下雨了。”be about to do....when...意为“刚要做某事时,突然发生某事”。
D
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( )2. He ________ back until the work ________ done.
A. isn't; will be B. isn't; is
C. won't be; will be D. won't be; is
【解析】 本题考查时间状语从句。句意:“他把工作做完才回来。”not...until引导的时间状语从句,遵循“主将从现”原则。
D
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考点2 地点状语从句
( )3. Make a red mark ________ you have a question.
A. that B. where C. which D. before
【解析】 本题考查地点状语从句。句意:“在你有疑问的地方,做一个红色标记。”
B
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考点3 条件状语从句
( )4. The football match will be put off if it ________.
A. will rain B. rains C. rained D. rain
【解析】 本题考查条件状语从句的时态。时间状语从句和条件状语从句中要用一般现在时代替一般将来时,遵循“主将从现”
原则。
B
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考点4 原因状语从句
( )5. We'd better go back home now ________ it is getting dark.
A. and B. but C. as D. unless
【解析】 本题考查原因状语从句。as可引导原因状语从句。
C
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考点5 目的状语从句
( )6. He is studying English hard ________ he can get a better grade in the coming exam.
A. in order to B. so that
C. so as to D. as long as
【解析】 本题考查目的状语从句。so that 引导目的状语从句;so as to和in order to 后接动词原形。as long as只要。句意:“为了能在考试中取得一个更好的成绩,他努力学习英语。”
B
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考点6 结果状语从句
( )7. My sister was ________ girl that she couldn't have cheated in the exam.
A. such honest a B. so an honest
C. so honest an D. such an honest
【解析】 本题考查结果状语从句。such/so...that...意为“如此……以至于……”。句意:“我妹妹是一个非常诚实的女孩,以至于她不可能在考试中作弊。” so用于“so+adj.+a/an+单数名词”; such用于“such+a/an+adj.+单数名词”。
D
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考点7 让步状语从句
( )8. ________, his mother will wait for him to have dinner together.
A. However late he was B. However he was late
C. However is he late D. However late he is
【解析】 本题考查让步状语从句。however+adj./adv.+主语+谓语,且主句为一般将来时,根据句意,从句要用一般现在时。
D
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考点8 比较状语从句
( )9. Robin speaks Chinese ________ he speaks his mother tongue.
A. so good as B. as good as
C. so well as D. as well as
【解析】 本题考查比较状语从句。“和……一样”用as...as...,修饰动词speak,应用副词。
D
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考点9 方式状语从句
( )10. He acted ________ nothing had happened.
A. if B. even if C. when D. as if
【解析】 本题考查方式状语从句。if如果;even if 即使;when当……时;as if好像。句意:“他表现得好像什么事情都没有发生过一样。”
D
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( )1. ________ we work together, we can succeed.
A. Unless B. When
C. As long as D. As soon as
【解析】 本题考查条件状语从句。句意:“只要我们共同努力,就能赢。”as long as只要。
C
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( )2. We didn't start our discussion ________ everybody arrived.
A. since B. if C. while D. until
【解析】 not...until...意为“直到……才……”。句意:“直到所有人都到齐了,我们才开始讨论。”
D
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( )3. My little sister ate so fast ________ she felt uncomfortable after the meal.
A. as B. for C. that D. when
【解析】 so...that...为固定搭配,其中so修饰形容词或副词。
C
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( )4. I wonder when they ________ for Beijing. I will go to the train station to see them off when they ________.
A. leave; will leave B. will leave; leave
C. will go; leave D. go; leave
【解析】 本题考查宾语从句和状语从句的时态。句意:“我想知道他们将何时去北京。当他们离开时,我将去火车站给他们送行。”根据句意可知when引导的宾语从句用一般将来时;when引导的时间状语从句中,主句用一般将来时,从句用一般现在时。
B
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( )5. You have to leave now ________ you can catch the early bus.
A. so that B. as soon as C. because D. if
【解析】 本题考查目的状语从句。so that意为“以便”,引导目的状语从句。
A
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( )6. I will show you around the West Lake when you ________ to Hangzhou the next time.
A. come B. will come C. are coming D. have come
【解析】 本题考查时间状语从句。在时间状语从句中,主句用一般将来时态,从句要用一般现在时表将来。
A
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( )7. I was about to go out ________ the telephone rang.
A. while B. as C. before D. when
【解析】 固定句型“be about to do...when...”表示“正要做……突然……”。
D
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( )8. ________ he is, he will be thinking of you.
A. Whether B. Wherever C. That D. What
【解析】 本题考查地点状语从句。wherever意为“无论在什么地方”,引导地点状语从句。
B
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( )9. Please speak aloud ________ the other students can hear you.
A. if B. when C. although D. so that
【解析】 本题考查目的状语从句。句意:“请大声些以便其他学生能听见你的话。”
D
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( )10. It is ten years ________ I met you last time.
A. for B. when C. that D. since
【解析】 本题考查句型“It is/has been+时间段+since从句”。
D
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( )11. It is ________ a useful app ________ it can make it easier for deaf children and their parents to read bedtime stories.
A. so; that B. such; that C. too; to D. as; as
【解析】 在so/such...that...的句型中,so修饰形容词、副词,而such修饰名词。本题的句型结构是“such+a/an+形容词+名词单数+that从句”。
B
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( )12. You need to practice speaking every day ________ you hope to improve your oral English.
A. that B. if C. unless D. though
【解析】 本题考查条件状语从句。句意:“如果你希望提高你的英语口语,那你就需要每天练习说。”
B
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( )13. ________ he was born in Florida, the author was famous for his stories about New York.
A. Since B. Once C. When D. Although
【解析】 since因为,自从;once一旦;when当……时;although尽管。句意:“尽管出生在佛罗里达,但是这个作家是因写关于纽约的故事而出名。”
D
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( )14. ________ I catch a cold, I have a headache.
A. Every time B. Though
C. Even D. Where
【解析】 本题考查every time引导的时间状语从句。句意:“每一次我感冒的时候,都会头痛。”
A
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( )15. I don't know ________ he will invite me to his birthday tomorrow. ________ he does, I'll tell you.
A. if; Whether B. whether; Whether
C. if; That D. if; If
【解析】 本题考查宾语从句和条件状语从句。第一句是if/whether引导的宾语从句,第二句是if引导的条件状语从句。
D
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( )16. The virus will be defeated ________ we keep calm and stay at home.
A. because of B. so that C. as if D. as long as
【解析】 本题考查状语从句。because of后不能加句子,首先排除;so that以便,为了,后跟句子,常表示结果或目的;as if好像,似乎;as long as只要,后跟条件状语从句。句意:“只要我们保持冷静,待在家,病毒就能被战胜。”
D
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( )17. The police asked us ________ cross the street ________ the traffic lights turned green.
A. not to; since B. don't; when
C. don't; until D. not to; until
【解析】 ask的用法是ask sb. (not) to do sth.,由此排除B、C两项。not...until...表示“直到……才……”。
D
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( )18. —John, Mom is too tired today. Don't bother her ________ it is necessary.
—OK, I won't.
A. if B. unless C. when D. whether
【解析】 本题考查条件状语从句。if如果;unless除非,如果不;when当……时;whether是否。
B
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( )19. A lot of experience in epidemic prevention and control has been gained ________ the fight against COVID 19.
A. because B. as C. for D. because of
【解析】 because、as、for都可引导原因状语从句,后接句子;because of后接短语。
D
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( )20. You should do ________ the teacher told you.
A. that B. if C. when D. as
【解析】 本题考查方式状语从句。句意:“你应该按照老师告诉你的那样做。”
D
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