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状语从句知识点(大全)经典

状语从句知识点(大全)经典
状语从句知识点(大全)经典

状语从句知识点(大全)经典

一、初中英语状语从句

1.—Have you heard of the latest news about WIFI?

—Yes. When the 5G age , the Internet speed will be 100 times as high as 4G.

A.come B.comes C.will come D.is coming

【答案】B

【解析】

【详解】

句意:——你听说过无线网络的最新消息吗?——是的。到了5G时代,网速将是4G的100倍。A. come动词原形; B. comes第三人称单数形式; C. will come一般将来时态;

D. is coming现在进行时态,此句是when引导的时间状语从句,遵循主将从现的原则,此空应填谓语动词的第三人称单数形式,此空故填comes。

2.Tony has had to cook by himself ________ his mother went on business to Guangzhou. A.since B.after C.during D.when

【答案】A

【解析】

【详解】

句意:自从妈妈去广州出差以来,托尼不得不自己做饭。A. since从……以来;B. after在……之后;C. during 在……期间;D. when当……时候。since后跟时间状语从句时,表示的是到目前为止的时间段,从句时态为一般过去时,而主句的时态为现在完成时,故正确答案为A。

3.I didn't realize he was a famous scientist you told me.

A.until B.because C.since

【答案】A

【解析】

句意:直到你告诉我,我才知道他是一位出名的科学家。A. until到…为止;B. because 因为;C. since既然,因为。本题考查固定句式not…until…直到……才。其用法是如果(主)句中的谓语是终止性动词,应采用“not…until”结构,意为“到……时候才” 根据句子结构,结合选项,故选A。

4.________it’s Sunday tomorrow, we have to go to school.

A.Though B.Since C.As D.Because

【解析】

【详解】

句意:尽管明天是星期天,我们不得不还要上学。考查从属连词。根据后文we have to go to school我们不得不去上学。可知前面从句应表示让步状语。故选A。

5.The sports meeting will continue ___it rains this afternoon.

A.if B.since C.as soon as D.unless

【答案】D

【解析】

试题分析:句意:除非今天下午下雨,否则运动会将要继续进行。连词unless意为“除非……如果不……”,“除了……”,多引导一个否定意义的真实条件句,有时也可引导非真实条件句。You will miss the bus unless you hurry up.你要不快点就会错过班车。故选D.

考点:考查连词的用法。

6.—Winter swimming is exciting, but one can’t do it ________ he or she has got some training. — Exactly! It can be dangerous.

A.after B.unless C.if D.while

【答案】B

【解析】

句意:——冬泳是令人兴奋的,但除非他或她接受了一些训练,否则是不行的。——没错!这可能是危险的。A. after在……之后;B. unless 除非;C. if 如果;D. while当……的时候。根据语境和句意可知用unless。故选B。

7.--- What was the party like?

--- Wonderful. It’s years ____ I enjoyed myself so much.

A.since B.after C.when D.before

【答案】A

【解析】

试题分析:句意:聚会怎么样?太精彩了,好多年了我没玩的这么高兴过。此题是考查句型:It’ s years + since + 一般过去式,此题中的动词是enjoyed延续性动词,应从动作结束算起,可以翻译成它的反义词,故选A。

考点:考查连词的用法

8.—Tom, do you know if Sam _______ to my party next week?

—I think he will come if he __________.

A.comes; will invite B.will come; will be invited

C.comes; invites D.will come; is invited

【答案】D

解析:句意:——汤姆,你知道山姆下个星期会来参加我的聚会吗?——我认为如果他被

邀请了他会来的。第一句中的if翻译为“是否”,引导宾语从句;根据句意,可知从句的时态应该用一般将来时;第二句中的if翻译为“如果”,引导条件状语从句,在if引导的条件状语从句中,要用一般现在时代替一般将来时,由句意可知用被动语态,故选D。

9._____ the members of TFBOYS are less than 15 years old, ______many people like their songs. A.Though; but B.Though; / C.Although; but D.Because; so

【答案】B

【解析】

【详解】

句意:虽然TFBOYS的成员还不到15岁,但许多人喜欢他们的歌曲。考查连词辨析。though和although都表让步,不和but连用,可排除AC两项。because和so都表因果,二者不可连用,可排除D项。根据句意结构,可知选B。

10.She looked behind from time to time ________ she went in the dark.

A.when B.as C.while D.before

【答案】B

【解析】

【详解】

句意:她在黑暗中走着,不时回头看看。考查连词辨析。when,while都可表示“…… 时候”;when引导的从句,谓语动词既可以是延续性动词,也可以是非延续性动词;while引导的从句,谓语动词必须是延续性动词,而不能是非延续性动词;as表示“在……期间”“随着”;before“在……之前”,常与过去时,一般现在时等连用。根据句意语境,可知她一边走一边回头看,as切合句意,故选B。

11.“______ there’s still much work to be done, the people’s government will not let the people down.” Premier Li said on March 5 in Beijing.

A.Because B.Unless C.If D.Although

【答案】D

【解析】

句意:“尽管还有很多工作要做,人民政府不会让人民失望的。”李克强总理3月5日在北京说。本题考查连词。A. Because因为;B. Unless除非;C. If如果;D. Although尽管、虽然。结合语境:“____还有很多工作要做,人民政府不会让人民失望的。” 李克强总理3月5日在北京说,可知用Although“尽管、虽然”,引导让步状语从句,故答案选D。

12.In summer, food will go bad quickly ________ we put it into a fridge.

A.if B.unless C.as soon as D.while

【答案】B

【详解】

句意:夏天,除非我们把食物放进冰箱里,否则食物很快就会变坏。A. if如果;B. unless 除非;C. as soon as一……就;D. while正当……的时候。根据生活常识,在夏天只有放在冰箱里的食物才能保证不变质,unless除非,如果不,相当于if not,引导条件状语从句,故答案为B。

13.He made a serious mistake, but he took immediate action to change that ______ it got worse.

A.until B.when C.because D.before

【答案】D

【解析】

试题分析:句意:他犯一个严重的错误。但他采取行动来改变它以免变得更糟。A. Until直到;B. When当……时;C. Because因为;D. Before在……之前。在变得更糟之前采取行动改变。故选D。

考点:考查连词辨析。

14.The environment will be much worse ___________ everyone has a sense of protecting it. A.unless B.if C.so that

【答案】A

【解析】

【详解】

句意:除非每个人都有保护环境的意识,否则环境会更糟。考查连词辨析。unless除非,表条件,相当于if not;if如果,表条件;so that以便于,表目的。本句是条件状语从句,根据句意语境,可知if不合句意,故选A。

15.--- I wonder if Tina to China next week.

--- If it ,she will come.

A.will come;won’t rain B.comes;doesn’t rain

C.comes;won’t rain D.will come;doesn’t rain

【答案】D

【解析】

【详解】

句意:——我想知道蒂娜下周是否会来中国。——如果不下雨,她就会来。根据语境推测对话的语境是“——我想知道蒂娜下周是否会来中国。——如果不下雨,她就会来。”,第一个设空处的if意思是“是否”,引导宾语从句,主句是一般现在时,从句根据时间状语next week确定用一般将来时,一般将来时的构成是:主语+will+动词原形,排除B/C;第二个设空处考查含有if引导的条件状语从句中主句的时态,在含有条件状语从句中的复合句中,时态遵循“主将从现”的原则,即:主句用一般将来时,从句使用一般现在时表将来,

表示“不下雨”应借助于助动词does,故选D。

16.— What do you think of your junior middle school life?

— I think it is colorful, I’m always busy.

A.though B.while C.until D.because

【答案】A

【解析】

【详解】

本题考查:副词辨析。选项分析:A. though虽然,尽管。B. while虽然;然而。 C. until 在…以前;直到…时。D. because因为。综合分析前后句,可知此处填 though最合适,完整句意为:— What do you think of your junior middle school life?你觉得你的初中生活怎么样?— I t hink it is colorful, though I’m always busy.我认为它是丰富多彩的,虽然我总是很忙。正确答案为:A

17.--- will the TV play be broadcasted(播出)?

---Perhaps it’s reviewed successfully.

A.How long; until B.When; until C.How soon; not until D.How often; not until 【答案】C

【解析】

【详解】

句意“-这个电视剧多久能播放?-可能直到它审核成功”。how long多长(问时间长短以及长度);when何时;C.how soon多久(后接一般将来时,且用in+一段时间回答);how often多久一次(问频率)。根据空后will可知,用how soon;第二空处译为“直到它审核通过才能播出”,not until直到……才,故选C。

18.—Did you give Dick a call?

—I didn’t need to ______ I’ll see him soon.

A.when B.through C.until D.because

【答案】D

【解析】

试题分析: 句意:你给汤姆打电话了吗?我没必要打,因为我很快就要看到他了。when 当……的时候,though尽管,.until直到,because因为。根据-I didn’t need to,我没必要打,可知不打电话是有原因的,故选D

考点:考查连词。

19.We will go to Tian’anmen Square to watch the raising of national flag if it _________ tomorrow.

A.will rain B.rains

C.doesn’t rain D.won’t rain

【答案】C

【解析】

试题分析:句意:如果明天不下雨我们要去天安门广场看升国旗。根据句意及题干分析if 引导的是条件状语从句,主句是一般将来时态,根据“主将从现”原则,if从句中应用一般现在时态,根据句意是“不下雨”,所以选C。

【考点定位】考查动词的时态。

20._____ the weather is fine tomorrow, we will go fishing.

A.As well as B.As soon as C.As long as D.As far as

【答案】C

【解析】

【详解】

C 本题考查连词短语用法。句意:只要明天天气好,我们就要去钓鱼。A. As well as也; B. As soon as意为:一……就; C. As long as只要;D. As far as意为:和……一样远。引导条件状语从句用as long as只要。故选C。

21.You will fall behind others ______ you work hard.

A.if B.unless C.though D.since

【答案】B

【解析】

试题分析:句意:如果你不努力学习,你会落后别人。A.because因为;B. If如果;C. Unless如果不; D. Though虽然。结合句意,故选B

考点:考查连词的用法.

22.________ there is danger on the internet, online insurance is still popular among the young. A.Unless B.Though C.Since D.Until

【答案】B

【解析】

【详解】

句意:虽然网上存在危险,但网上保险在年轻人中仍然很流行。考查连词辨析。A. Unless 除非,如果不,引导条件状语从句;B. Though尽管,虽然,引导让步状语从句;C. Since 自….以来,既然,由于,引导时间状语从句和原因状语从句;D. Until:到…为止,在…以前,直到,引导时间状语从句。根据句意可知前后句句意是转折关系,前句是让步关系,可知填Though;选B。

23.---Would you like to go bike riding with us tomorrow? ---Sure, ____ I am busy.

A.since B.unless C.when D.until

【答案】B

【解析】

试题分析:句意:----你想要明天和我们一起去划船吗?好的,如果我不忙我就去。A自从;B如果不;C当……时候;D直到……才。根据句意,应选B。

考点:考查连词。

24.---Mom, shall we have supper now?

---Oh, we won’t have supper_______ your dad comes back.

A.until B.since C.while D.after

【答案】A

【解析】

试题分析:句意:-妈妈,我们现在吃晚饭好吗? -哦,直到你爸爸回来我们才可以吃晚饭。until直到;since自从;while当……的时候;after在……之后。Not…until直到……才,是一个固定句型,所以选A。

考点:考查连词。

25.Life is like climbing a mountain. ______ you feel tired, you will enjoy the beautiful view at the top of the mountain.

A.Since B.Unless C.Though D.Because

【答案】C

【解析】

【详解】

句意:生活就像爬山。虽然你感到累,但你会在山顶欣赏美丽的景色。考查状语从句;since 自从,引导时间状语从句;unless 除非,引导条件状语从句;though 虽然,引导让步状语从句;because 因为,引导原因状语从句。此处表示让步关系,故选C。

26.—Let’s have a picnic if it ________ this S unday.

—But nobody knows if it ________ on that day.

A.will be fine; will rain B.will be fine; rains C.is fine; will rain D.is fine; rains

【答案】C

【解析】

【详解】

句意:——如果这个星期天天气好,我们去野餐吧。——但没人知道那天会不会下雨。

第一空是if引导的条件状语从句,从句用一般现在时态,主语是it,这里be动词用is。排除AB;第二空是if引导的宾语从句,根据语境可知用一般将来时,其结构是will{动词原形。根据题意,故选C。

27.The football fans cheered ______ they heard the exciting news.

A.even though B.in order that

C.as soon as D.as long as

【答案】C

【解析】

【详解】

句意“足球迷一听到这个令人兴奋的消息就欢呼起来”。

even though尽管(引导让步状语从句);in order that为了(引导目的状语从句);as soon as一……就……(引导时间状语从句);as long as只要(引导条件状语从句)。根据句意可知,译为“足球迷一听到这个令人兴奋的消息就欢呼起来”,引导时间状语从句。故选C。

28.There are fewer and fewer tigers in India. The situation will continue _______ humans stop hunting them for their fur and bones.

A.if B.unless C.because D.since

【答案】B

【解析】

试题分析:句意:印度有越来越少的老虎。如果人类不停止为了虎皮和虎骨猎杀老虎,情况会继续。A.if如果,表示条件;B.unless如果不,表示相反的条件;C.because因为,表示原因;D.since自从,表示时间的起点;既然,表示原因。“如果不”停止,情况会继续。故选B。

考点:考查连词的用法

29.No matter ________________, you must follow the school rules.

A.where are you B.what do you do

C.who are you D.who you are

【答案】D

【解析】

【分析】

【详解】

句意:无论你是谁,你都应该遵守学校的规章制度。此题考查状语从句。根据语序用陈述语序,应选D。

30. The actor was happy he got a part in the a movie, _____ the part was a small one . A.since B.while C.though D.unless

【答案】C

【解析】

【详解】

句意:这个演员很高兴他在这部电影中有一个角色,尽管是一个小角色。

考查连词辨析。since既然,自从……以来,引导原因和时间状语从句;while当…时候,引导时间状语从句;然而,表示转折关系;though虽然,尽管,即使,表示让步关系;

unless除非,引导否定的条件状语从句。结合句意,后一句表示角色小,前一句表示他对这个角色感到高兴,故前后表示让步关系,故用连词though。故选C。

31. Tom failed in the exam ag ain ______ he tried his best.

A.if B.unless C.though D.because

【答案】C

【解析】

试题分析:句意:尽管他尽了最大努力,汤姆在考试中又不及格。if是否,如果;unless 除非,如果不;though虽然,尽管;because因为。故选C。

【考点定位】考查连词辨析

32.—Susan,what are the advantages of MP5 players?

—Mom,they are smaller and lighter________they can be carried very easily.

A.unless

B.if

C.until

D.so that

【答案】D

【解析】

【详解】

句意:——Susan,MP5播放器的优点是什么?——妈妈,他们更小、更轻,为的是方便携带。so that“为的是,以便”,表示目的;unless“除非”;if“如果”;until“直到”。由句意可知选D。

33.Many people still try to climb Qomolangma every year _______ it is very dangerous. A.when B.if C.though

【答案】C

【解析】

句意:每年许多人仍然努力登上珠穆朗玛峰,尽管它是非常危险的。when 当……时候;if 如果;though尽管。结合句意,可知尽管危险,人们还在攀登珠穆朗玛峰,表示让步关系,故用连词though。故选C。

34.All the foreign kids don’t feel lonely ______ they are alone in China.

A.even though B.since C.unless

【答案】A

【解析】

【详解】

句意:所有的外国孩子即使单独在中国也不会感到孤独。

A. even though尽管,即使,引导让步状语从句;

B. since意为“自从”,引导时间状语从

句;意为“既然”,引导原因状语从句;C. unless除非,如果不,引导条件状语从句。结合句意:所有的外国孩子即使单独在中国也不会感到孤独。故选A。

35.We can't cross the road the traffic lights turn green.

A.until B.if C.while D.as

【答案】A

【解析】

【详解】

句意:我们要等交通信号灯变绿了才能过马路。

考查从属连词。A. until直到;B. if如果;C. while当……时;D. as随着。根据前文的can’t,可知构成not…until…引导的时间状语从句,表示“直到……才……”,故选A。

36.Julie didn’t leave her office _____ the police arrived.

A.however B.whenever C.while D.until

【答案】D

【解析】

试题分析:句意: 直到警察到来,朱莉才离开办公室. A. however然而;B. whenever无论何时;C. while而;D. until直到;根据句意,故选D。

考点:考查副词的用法。

37.—____ the workers are very tired, _____they keep on working.

— They are great. We must learn from them.

A.Because; / B.Though; / C.Because; so D.Though; but

【答案】B

【解析】

试题分析:句意:尽管工人们很累了,但他们仍然继续工作。——他们太伟大了,我们应该向他们学习。本题考查连词的用法。Because用于表示因果关系,不能与so同时使用;Though用于表示转折关系,不能与but同时使用。结合句意,故选B.

考点:考查连词的用法。

38.—Are you going to climb the mountains tomorrow?

—Yes. But if it _____, I_____ at home.

A.will rain; will stay B.will rain; stay C.rains; stay D.rains; will stay

【答案】D

【解析】

【详解】

句意:——你明天将去爬山吗?——是的。但是如果明天下雨,我将呆在家里。

考查状语从句。根据句意和语境,可知答句是if引导的条件状语从句,遵循“主将从现”的

原则,if从句用一般现在时,主语it是第三人称单数,动词用三单形式,“下雨”用rain,所以第一空填rains;主句用一般将来时,“呆在家里”stay at home,用will+动词原形,所以第二空填will stay;故答案选D。

39.一Xiao Lin,this desk is heavy I can't move it.

一Don't worry.I'll help you.

A.such;that B.too;to C.so;that

【答案】C

【解析】

【详解】

句意:——小林,这张桌子太重了,我动不了。——别担心,我会帮你的。too....to....太....而不能....,to后面不能接句子,故排除选项B;so/such....that.....:太....以至于....,that后接句子;such+a(an)+adj.+单数可数名词+that…;so+adj./adv.+that…;结合句子this desk is heavy I can't move it. 可知,其中心词是形容词heavy,因此用so....that.....句式,故选C。

40.﹣Friends are like books.

﹣Yes,we don't need lots of them they are good.

A.as if B.even though

C.as long as D.as far as

【答案】C

【解析】

【详解】

句意:—朋友像书籍。是的,我们不需要太多,只要他们品质好。

考查连词辨析,as if好像,even though尽管,as long as只要,as far as据……,根据句意,﹣﹣朋友就像书籍.﹣﹣是的,我们不需要太多只要他们品质好.故选C.

41._____ they are very tired, they feel happy because they’ve finally finished their project. A.So B.Although C.If D.But

【答案】B

【解析】

【详解】

句意:尽管他们很累,他们感到高兴,因为他们终于完成了他们的项目。

考查连词辨析。A. So 因此;B. Although尽管;C. If如果;D. But但是。分析句意可知,他们虽然很累,但很快乐,前半句是让步状语从句,用Although。答案选B。

42.You’d better take the map with you ________ you won’t get lost.

A.as long as B.as soon as C.now that D.so that

【答案】D

【详解】

句意:你最好带上这张地图,目的是为了不迷路。

考查连词辨析。A. as long as只要,引导条件状语从句;B. as soon as一……就……,引导时间状语从句;C. now that既然,表原因;D. so that以便,引导目的状语从句或结果状语从句。根据句意语境,带着地图的目的就是防止迷路,本题是目的状语从句,故选D。

43.---Did you catch what the teacher said?

---No. She spoke so fast _______ I couldn’t hear her very clearly.

A.which B.that C.when D.since

【答案】B

【解析】

考查从句的连接词。“你听懂老师讲的了吗?”“不。她说的那么快以至于我听得不是太清楚。”so...that...“如此......以至于......”,表示结果。故选B。

44.Little Jack has learned to do lots of things on his own , ______ he is only four years old.

A.if B.though C.for D.since

【答案】B

【解析】

句意:小杰克自己学会了做许多事情,尽管他只有四岁。A. if 如果; B. though 尽管 C. for 因为,为了; D. since自从;根据Little Jack has learned to do lots of things on his own , 和he is only four years old.之间是让步关系,所以用 though 引导让步状语从句;故选B

45.– You bought the car about ten years ago?

-- Yes. it’s old, it still runs well.

A.Because B.Since C.Although D.But

【答案】C

【解析】

【详解】

句意:——你十年前买的车?——是的。虽然它很旧,但它仍然运行良好。

考查连词辨析。A. Because因为,引导条件状语从句,前后句是因果关系;B. Since自从……以来,引导时间状语从句;C. Although虽然,尽管,引导让步状语从句,前后句是转折关系,although后面句子表示让步条件;D. But但是,并列连词,连接并列句,前后句转折

关系。根据句意可知前后句是转折关系,前句表示让步条件;故选C。

46.Helen didn't know anything about it_______ her father told her.

A.if B.because C.after D.until

【答案】D

【解析】

句意:直到她的父亲告诉她,她才知道关于它的一些事情。

考查连词辨析。if是否,如果;because因为;after在......之后;until直到。短语

not ...until...意为“直到......才......”,故选D。

47.She stopped talking her mother came into the room.

A.as soon as B.unless C.though

【答案】A

【解析】句意:她妈妈一进到房间里,她就停止了说话。A. as soon as 一----就---; B. unless 除非; C. though尽管;这里是考察连词,根据She stopped talking 和her mother came into the room.之间的关系,可知是妈妈一进到房间里,她就停止了说话;故选A

48.He was so busy preparing for the high school entrance exam that .

A.he had enough time to watch football matches every day

B.he was free enough to go shopping online

C.he had no time to do sports every day

【答案】C

【解析】

【详解】

句意:他忙于准备高中入学考试,以至于他每天都没有时间做运动。

考查结果状语从句。A. 他每天有足够的时间看足球比赛;B. 他有足够的时间去网上购物;

C.他每天都没有时间做运动。本句是“so…that”结构,表示“如此……以至于……”,引导结果状语从句;根据“He was so busy preparing for the high school entrance exam”可知没有时间娱乐、购物或做运动,A、B两项不合句意,故选C。

49.Daming hasn't done much exercise _______ he got his computer.

A.when B.if C.though D.since

【答案】D

【解析】

试题分析:句意:自从有了电脑,大卫就没有做许多运动了。A. when当……时;指时间;B. if如果,表示条件;C. though虽然,尽管,表示让步;D. since自从,表示时间的起点。不锻炼是从有电脑开始的,表示时间的起点,用since。故选D。

考点:考查连词辨析。

50.Our world will get better and better each of us lives a greener life.

A.before B.if C.though D.until

【答案】B

【解析】

试题分析:句意:如果我们每一个人都过更绿色的生活,那么我们的世界将会变的越来越

好。A. before在……之前,引导时间状语从句;B. if 如果,引导条件状语从句;C. though 尽管,虽然,引导让步状语从句;D. until直到……引导时间状语从句。结合句意,故选B。考点:考查连词的用法。

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状语从句-知识点归纳与练习 一、初中英语状语从句 1.We all know that we won't enjoy good health ______ we often exercise. A.though B.if C.when D.unless 【答案】D 【解析】 【详解】 句意:我们都知道如果我们不经常锻炼,我们将不会享有好的健康。考查连词的用法。A. though虽然,尽管;B. if如果;C. when当......的时候;D. unless除非,如果不。根据句意:我们都知道如果我们不经常锻炼,我们将不会享有好的健康。只有D项符合题意。故选D。 【点睛】 主将从现是指在时间状语从句和条件状语从句中,如果主句是一般将来时,从句用一般现在时替代一般将来时。 常见的有以下四种情况: 一、条件状语从句的主句是一般将来时,那么从句常常用一般现在时 如:When I grow up, I’ll be a nurse and look after patients 我长大后要当一名护士,照顾病人 二、如果主句是祈使句,那么从句通常要用一般现在时 如:Don’t laugh at me w hen I make a mistake. 我犯错误的时候不要笑话我。 三、如果主句是含有情态动词的一般现在时,根据需要从句多用一般现在时 如:You should be quiet when you are in the reading room 在阅览室时应保持安静 四. 如果if的条件状语从句遇到变换间接和直接时 , 祈使句应用not to.... 如; She said not to close the window 常见的时间状语从句的连词有:as soon as,when,while ,as,until等。 2.Tony has had to cook by himself ________ his mother went on business to Guangzhou. A.since B.after C.during D.when 【答案】A 【解析】 【详解】 句意:自从妈妈去广州出差以来,托尼不得不自己做饭。A. since从……以来;B. after在……之后;C. during 在……期间;D. when当……时候。since后跟时间状语从句时,表示的是到目前为止的时间段,从句时态为一般过去时,而主句的时态为现在完成时,故正确答案为A。

(完整)高中英语状语从句讲解及练习

状语从句 在复合句中作状语,位置灵活。 状语从句可分为时间状语从句,目的状语从句,条件状语从句,让步状语从句,地点状语从句,原因状语从句,方式状语从句,结果状语从句。 (一)时间状语从句 1.when, as, while a.when表时间,从句既可以用延续性动词,又可以用瞬间动词。 Eg: When I get there I will call you. 如果when引导的时状的主语与主句的主语相同,而从句的谓语又是be动词时,那么从句中的主语与be 可省。 Eg:When (you are)in trouble, you can ask her for help. 如果when引导的时状的主语与主句的主语相同时,往往可以用“when+分词”的形式代替该状从。Eg:When I came into the room(When coming into the room), I found the light was off. b.while表时间,从句需用延续性动词,或者主句的动作发生在从句的动作进行过程中。主句的谓语动词 通常是非延续性动词。 Eg: He came in while I was reading a book. I met her while I was in school. c. as表时间,与when相似,但侧重强调主从句动作同在时间点或同时间段进行。同时可表示主句的动作随着从句的动作的变化而变化。 Eg: He jumps as he sings. As the wind rose, the noise increased. 2.before(在……之前)与after(在……之后) Eg:See me before you leave. I saw them after I arrived. 3. till与until 肯定形式表示的意思是"做某事直至某时"。否定形式表达的意思是"直至某时才做某事"。 Eg: Wait till/untill I call you. 等着直到我叫你。 She didn't arrive till/until 6 o'clock.. 她直到6点才到 但是置于句首时只可用untill. 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。否定形式有另外两种表达方式: (1)Not until …在句首,主句用倒装。 Man did not know what heat was until the early years of the 19th century. =Not until the early years of the 19th century did man know what heat was. (2)It is not until…that… He will not go to bed until his mother comes home. =It is not until his mother comes home that he will go to bed. 4. as soon as/the moment/the instant/the second/the minute/immediately和hardly/scarcely…when, no sooner…than a. as soon as/the moment/the instant/the second/the minute/immediately 表示主句和从句的动作同时发生。译为“一……就” Eg:As soon as she heard the news, she began crying. b. hardly/scarcely…when, no sooner…than都可以表示"一……就……"的意思,但主句谓语动词一般要用过去完成时,从句谓语动词要用一般过去时。 Eg:I had hardly / scarcely got home when it began to rain. I had no sooner got home than it began to rain.注意:如果hardly, scarcely 或no sooner置于句首,句子必须用倒装结构:Hardly / Scarcely had I got home when it began to rain. No sooner had I got home than it began to rain。 1. We called the First - Aid Center_______ the traffic accident happened. A. immediately B. shortly C.quickly D. hurriedly 2. The roof fell _____he had time to dash into the room to save his baby. A. before B. as C. after D. until 3. A good storyteller must be able to hold his listeners’ curiosity he reaches the end of the story. A when B whenever C.after D.until 4. I had just started back for the house to change my clothes _______ I heard the voices. A. as B. for C. while D.when 5. ______ the day went on, the weather got worse. 1

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