时间状语从句和原因状语从句专项练

必备英语【初中英语】状语从句专题练习含答案解析一、初中英语状语从句1．--Where is the comic book?--I brought it to you ________you were in the reading room yesterday.A．when B．if C．because D．before【答案】A【解析】句意：-漫画书在哪里？-昨天当你在阅览室的时候我就拿给你了。

when当…时候；if如果，引导条件状语从句；because因为，引导原因状语从句；before在…之前，引导时间状语从句。

根据句意可知，这里表示“当你在阅览室的时候”，故应选A。

2．---The two old friends were ____ busy ____ with each other that they forgot the time.---Yes. They hadn’t met for over ten years, so they kept talking the whole night.A．too; to talk B．too; talking C．so; to talk D．so; talking;【答案】D【解析】试题分析：句意:这两个老朋友那么忙于交谈以至于忘了时间。

是。

他们十年多没见到了，所以他们聊了一晚上。

考查句式so…that…因此……以至于……;be busy doing忙于做……，故选D。

考点：考查so…that句式。

3．— Is everyone here today?— No, Lucy is at home ________ she has got a high fever.A．because B．if C．until D．unless【答案】A【解析】【详解】句意：——今天大家都到齐了吗？——没有，露西因为发高烧呆在家里了。

A. because因为；B. if如果；C. until直到……才；D. unless除非，如果不。

（一）状语从句概述定义状语从句用作状语，是起副词作用的句子。

位置状语从句可以放在主句之前，也可以放在主句之后，时间、条件、原因和让步状语从句放在句首时需要用逗号和主句隔开。

分类根据其作用可以分为时间、地点、原因、条件、目的、让步、方式和比较等状语从句。

作用它可以修饰谓语、非谓语动词、定语、状语和整个句子。

（二）状语从句详解1. 时间状语从句引导词用法示例when 意为“当…的时候”。

When引导从句的谓语动词可以是延续性动词，也可以是瞬间动词。

并且when有时表示“就在那时”A liar is not believed when he speaks the truth.说谎者讲真话时也没有人相信。

When he arrives, I’ll call you. When you laugh and smile, your body relaxes.while 意为“在…的时候，在…的同时”。

While引导从句的谓语动词必须是延续性的，发生时间较长，并强While I was standing at the window, I saw several boys running along the street.While John was watching TV, his wife was cooking.调主句和从句的动作同时发生（或者相对应）。

While 有时还可以表示对比。

as 意为“一边…一边…”。

As引导的动作是延续性的，发生时间较短，一般用于主句和从句动作同时发生；as也可以强调一前一后。

The writer was angry as he was travelling on a train to London because someone had invaded his “space”.He smiled as he stood up.after 意为“在…之后”。

表示主句动作发生在从句动作之后。

状语从句专项练习50题1. I was doing my homework ______ my mother was cooking dinner.A. whileB. whenC. asD. until答案：A。

本题考查时间状语从句连接词的用法。

“while”强调两个动作同时进行，“我在做作业”和“我妈妈在做晚饭”两个动作同时发生，所以用“while”。

“when”既可表示同时，也可表示先后，在此语境不如“while”贴切。

“as”表示“随着”，不符合句意。

“until”表示“直到”，与句意不符。

2. ______ I was walking in the park, I saw a beautiful bird.A. WhileB. WhenC. As soon asD. Before答案：B。

“when”在此表示一个动作正在进行时，另一个动作突然发生，“我正在公园散步时，看到了一只漂亮的鸟”。

“while”强调两个动作同时持续进行，不太符合。

“as soon as”表示“一……就……”，逻辑不符。

“before”表示“在……之前”，不符合语境。

3. He didn't come home ______ it was dark.A. untilB. whileC. whenD. as答案：A。

“not...until...”是固定搭配，表示“直到……才……”，“他直到天黑才回家”。

“while”“when”“as”都没有这种“直到”的意思。

4. ______ she was reading the book, she fell asleep.A. WhileB. WhenC. AsD. Since答案：A。

“while”强调在“她读书”这个动作进行的过程中“睡着了”。

“when”更多表示动作的先后发生。

“as”有“随着”的意思，不太符合。

“since”表示“自从”，不符合句意。

5. I'll call you ______ I arrive in Beijing.A. whileB. whenC. as soon asD. until答案：C。

初中英语状语从句归纳附练习及答案状语从句是指在句子中充当状语的从句。

它可以修饰动词、形容词、副词等，表示时间、条件、原因、方式等不同的状况。

掌握状语从句的用法对于理解和运用英语句子结构非常重要。

本文将对初中英语中常见的状语从句进行归纳，并提供相应的练习题及答案供大家学习参考。

一、时间状语从句时间状语从句常用when，while，as，before，after，since，until等引导。

表示主句动作发生的时间。

例句1:I will call you when I arrive at the airport.当我到达机场时，我会给你打电话。

例句2:She likes to listen to music while she is doing her homework.她喜欢一边做作业一边听音乐。

练习题：1. He will go to bed _______ he finishes his homework.2. Don't play with fire _______ your parents are not at home.3. You can visit the museum _______ you have free time.1. after2. while3. whenever二、条件状语从句条件状语从句通常使用if或unless引导。

表示条件或假设的情况。

例句1:If it rains tomorrow, we will stay at home.如果明天下雨，我们就待在家里。

例句2:You will pass the exam unless you work hard.除非你努力学习，否则你将无法通过考试。

练习题：1. I will buy a new car _______ I save enough money.2. _______ you study hard, you will fail the exam.3. She won't go shopping with you _______ it stops raining.答案：1. if3. until三、原因状语从句原因状语从句常用because，since，as等引导。

一、时间状语从句1、当我进屋时，他正在写信。

2、我们什么时间有空，我们就去那里。

3、我正在街上走着，这时忽然有人从后面拍我的肩膀。

4、天下雨的时候，他们出去了。

5、他不在的时候我在。

6、他赶快回家，不时地一边走一边向后看。

7、先做学生，再做先生。

8、比赛开始后，他到了。

9、我们一直等到他回来。

10、她到11点钟才停止工作。

11、她站在那里看着，直到看不见他的身影。

12、自从1978年以来中国发生了巨大的变化。

13、我一到上海就给你写信。

14、我刚一到家，就下雨了。

15、我们刚到车站，火车就走了。

16、我们刚开始就被叫停。

17、我每次乘船都晕船。

18、我一听到这首歌，就感到很愉快。

19、下次你来的时候，就会见到他。

二、地点状语从句1、有志者，事竟成。

2、哪里有水，哪里就有生命。

3、你可以随意到你喜欢的任何地方去。

4、无论你去哪都要遵守法律。

三、原因状语从句1、昨天我回来晚了，因为我值班。

2、既然大家都到了，我们开始开会。

3、由于他英语懂得不多，他在字典中查阅这个单词。

4、鉴于天气已经晴朗，我们可以启程了。

5、鉴于他病情严重，我们派人去请医生去了。

四、目的状语从句1、我要把你的电话号码记下来，以免忘记。

2、我把真实情况告诉你，使你能自己作出判断。

3、他们比往常更加努力工作，为了能提前完成工作。

4、多穿点衣服，以免患感冒。

五、结果状语从句1、我们把收音机的音量放大，大家都听到了新闻。

2、他十分激动，以致一句话都说不出来。

3、他说出了这么重要的理由，得到大家的谅解。

4、这是一本十分有意思的书，大家都想看。

六、条件状语从句1、如果我们不怕困难，困难就算不了什么了。

2、除非下雨，我们明天就去那里。

3、只要你努力工作，你就一定能成功。

4、万一我忘了，请提醒我一下。

5、据我所知，那本书下月出版。

七、方式状语从句1、按照我教你的画一只猫。

2、按照人家告诉你做的去做。

3、看上去她好象是生病了。

4、他的行动就好象什么也没有发生。

高中二年级英语状语从句专项练习20题1. I was reading a book when my mother came in. （考查when 引导的时间状语从句）答案：这道题考查when 引导的时间状语从句，表示“当……时候”，主句是过去进行时，从句是一般过去时。

2. While I was doing my homework, my sister was watching TV. （考查while 引导的时间状语从句）答案：此题考查while 引导的时间状语从句，while 强调主从句动作同时进行，主句和从句都用过去进行时。

3. As soon as I got home, it began to rain. （考查as soon as 引导的时间状语从句）答案：这题考查as soon as 引导的时间状语从句，意为“一……就……”，主句用一般过去时，从句也用一般过去时。

4. We were having dinner until the phone rang. （考查until 引导的时间状语从句）答案：本题考查until 引导的时间状语从句，until 表示“直到……”，主句是过去进行时，从句是一般过去时。

5. I will call you as soon as I arrive in Beijing. （考查as soon as 引导的时间状语从句）答案：此题为考查as soon as 引导的时间状语从句，as soon as 引导的时间状语从句遵循“主将从现”原则，即主句用一般将来时，从句用一般现在时。

6. If you work hard, you ______ succeed.A. willB. wouldC. shouldD. could答案：A解析：“If you work hard”是条件状语从句，遵循“主将从现”原则，主句用一般将来时，所以选A 。

7. I will go shopping with you if I ______ free tomorrow.A. amB. will beC. wasD. were答案：A解析：在条件状语从句中，主句用一般将来时，从句用一般现在时，I 后面接am，所以选A 。

时间状语从句和原因状语从句专项练习I. Choose the best answer.1. I considered her hard-working and kind _______ I got to know her in the bookstore.A. first timeB. for the first timeC. the first timeD. by the first time2. It was not _______ he took off his dark glasses _______Irealized who he was.A. when; thatB. until; whenC. when; thenD. until; that3. It had been many years _____ Mandela, the former president of South Africa, was set free from prison.A. beforeB. sinceC. untilD. that4. _______ had the bell rung ______ the students took their seats.A. Hardly; whenB. No sooner; whenC. Hardly; thanD. No sooner; then5. We had been walking along the beach for nearly three hours _____ we saw a boat on the sea.A. whenB. beforeC. unlessD. until6. The two brothers quarreled and quarreled _______ they felt sleepy and went to bed.A. whenB. beforeC. unlessD. until7. —What was the party like?—Wonderful. It’s years _______ I enjoyed myself so m uch.A. afterB. beforeC. whenD. since8. It was quite a long time _______ I made out what had happened.A. afterB. beforeC. whenD. since9. _______, he went upstairs to sleep without supper.A. He was tiredB. As he was tiredC. Tired as he wasD. As tired as he was10. We sent the injured to the First-aid Centre_______ the accident happened.A. immediatelyB. hurriedlyC. quicklyD. shortlyII. Fill in the blanks with proper conjunctions.11. She looks unhappy recently _______ her demand has been turned down by her boss.12. _______ times have changed, good revolutionary traditionscan’t be thrown away.13. _______ all the world were against me, I should still hold to my opinion.14. _______ she got the pay, she put it away in the bank.15. I was wandering through the street _______ I caught sight of a tailor’s shop.16. He was drinking juice _______ the rest of us drank whisky.17. _______ you read the poem a second time, the meaning will become clearer to you.18. We walked along the seaside about two hours _______ we came toa fisherman’s village.19. The sailor stayed on the lonely island ____ a ship passed there and rescued him.20. It was eight years_______ the Chinese people drove off the Japanese aggressors.参考答案:1—5 CDAAB 6—10 DDBBA11. because 12. Though / Although 13. (Even) Though 14. As soon as 15. when 16. while 17. When/If 18. before 19. until 20. before英语语法连词状语从句训练专题根据A句完成B句,使两句意思一致,每空只填一词:1. A: Jane is a singer. She is also a dancer.B: Jane is ______ ______ a singer ______ ______ a dancer.2. A: We should learn from books and we should learn from teachers.B: We should learn ______ from books ______ from teachers.3. A: His mother can’t help him with his lessons, and his father can’t, either.B: ______ his mother ______ his father can help him with his lessons.4. A: It’s hard work, but I enjoy it.B: ______ it’s hard work, I enjoy it.5. A: Men can’t live without air and water.B: Men will die without air ______ water.6. A: If you stand higher, you will see farther.B: Stand higher, ______ you will see farther.7. A: If you don’t work harder, you will fail in the exam.B: Work harder, ______ you won’t pass the exam.8. A: How important the meeting is! I can’t miss it.B: It is ______ ____ important meeting ______ I can’t miss it.9. A: After the mother came back, the boy went to bed.B: The boy ______ go to bed ______ his mother came back.10. A: There’re many rabbits there. They can’t kill them all.B: There’re ______ many rabbits there ______ they can’t kill them all.11. A: When I get there, I’ll go to see him at once.B: I’ll go to see him ______ ______ ______ I get there.12. A: You may stay at home. You may also go out with us.(江西B: You may ______ stay at home ______ go out with us.13. A: Mary is the tallest girl in her class.(1999福州)B: Mary is ______ ______ any other girl in her class.14. A: Peter draws well. Henry draws well, too.(1999广西) B: Henry draws ______ ______ ______ Peter.15. A: Mary runs faster than my sister.(1999兰州)B: My sister doesn’t run ______ ______ ______ Mary does. 16. A: Uncle Wang finished his work. He went home.B: Uncle Wang ______ go home ______ he finished his work. 17. A: Lucy has been away from the USA for 5 years.(内蒙古B: It’s 5 years ______ she ______ the USA.18. A: ―Does the girl need any help?‖ he asked me.(甘肃) B: He asked me ______ the girl ______ some help.19. A: Mrs. Smith is my teacher. She is also my good friend.B: Mrs. Smith is ______ ______ my teacher ______ ______ my good friend.20. A: ―Nanjing has changed a lot these years.‖ ―That’s right.‖B: ―Nanjing has changed a lot these years.‖ ―______ it ______.‖二、在下列各句中填入适当的状语从句连词,使句子意思完整、通顺1.________it rains, I go to school by bus. when2. I will tell you the secret _____ you don't tell anyone else about it. (as long as)3. Mary always takes a seat in the first row ______ she can hear better. (where)4. We didn't notice anything wrong with the computer ______we started using it. (until)5. The young doctor was a bit worried ____it was his first time to operate on a patient. (as, because)6. We should study foreign languages ___hard ___Marx did. (as, as)7.The elephant has ___strong a body ___it can do heavy work for people. (so, that)8.It is ___a difficult problem____ nobody can work it out. (such, that)四:各类从句( ) 1. They didn’t start the work ____ their teacher came back.A. untilB. whileC. as soon asD. if( ) 2. The dictionary cost me too much, ____ it’s really useful.A. andB. soC. butD. or( ) 3. –Carl, are you interested in swimming?--Yes, ____ I’m not good at it at all.A. soB. andC. orD. but( ) 4. You’ll be late ____ you don’t get up early tomorrow morning.A. IfB. whenC. beforeD. until( ) 5. I’d like to change this pair of tr ousers, ____ you give me my money back. A. so B. or C. but D. and( ) 6. Alice wanted to know ____ her grandmother liked the bag.A. thatB. ifC. whichD. what( ) 7. Mr John has worked in that small town ____ he left Canada in 1998.A. whenB. afterC. forD. since( ) 8. That was our first lesson, ____ she didn’t know all our names.A. forB. butC. soD. or( ) 9. ____ Saturday ____ Sunday is OK. I’ll be free on these two days.A. Either; orB. Neither; norC. Both; andD. One; the other ( ) 10. He listened to the music ____ he was washing his clothes.A. afterB. beforeC. thatD. while( ) 11. ____ there are too many people here, ____ we have to find another house.A. Because; soB. Though; butC. Since; /D. /; if( ) 12. Can you tell me ____ the nearest hospital is?A. whatB. howC. whetherD. where( ) 13. Don’t drink too much tea in the evening, ____ you won’t fall asleep.A. andB. soC. orD. but( ) 14. ____ he is very young, ____ he knows several languages.A. Though; butB. Because; soC. Though; /D. Because; / ( ) 15. Go down the street ____ you see the third crossing.A. thoughB. sinceC. untilD. while( ) 16. He was ____ tired ____ he couldn’t go on working.A. too; toB. such; thatC. so; thatD. too; that( ) 17. You’d better take this book. It is very good ____ it’s a bit expensive.A. thoughB. andC. butD. so五:综合型1. ____ he is very young, ____ he knows a lot about science.A. Though; butB. Because; soC. Though; /D. When; and2. She was ____ we all like her.A. such a good singerB. such a good singer thatC. a very good singer thatD. so good singer that3. I’ll give her the message ____ she comes back.A. tillB. beforeC. sinceD. as soon as4. Mother didn’t go to bed ____ she finished cleaning the room.A. afterB. untilC. becauseD. while5. It is a long time ____ we met last time in Shanghai.A. beforeB. afterC. sinceD. for6. Can you tell me ____ is she going to give me as a present?A. whereB. whenC. whoD. what7. Rose is an English girl, ____ she doesn’t like English food.A. yetB. soC. forD. and8. Tom laughed ____ the others did, ____ he didn’t understand the story.A. like; thoughB. as; thoug hC. like; becauseD. as; as9. I didn’t hear ____ he sai d just now.A. thatB. whatC. whichD. it10. They were reading ____ the lights were out.A. asB. whenC. whileD. until11. Could you tell me ____ his father is like?A. thatB. howC. whyD. what12. The meeting didn't start___ everyone was there.A. becauseB. untilC. whyD. if13. I won't believe you_____ I have seen it with my own eyes.A. beforeB. untilC. afterD. when14 I'm sure he'll come to see me before he ___ Beijing.A. will leaveB. is leavingC. leaveD. leaves15. By the end of last term, I___ ten books.A. had finished readingB. have finished readingC. had finished to readD. finished read16. I ___ you for a long time. Where ___ you ___?A. didn't see; did; goB. didn't see; have; goneC. haven't seen; have; beenD. haven't seen; have; gone17. _____ he came to study in the university, he has made much progress in the study of English.A. WhileB. WhenC. SinceD. After18. I'd like to go swimming _____ the water is not too cold.A. forB. unlessC. ifD. whether19. Suzhou is not ____ beautiful ____ Hangzhou.A. as; thanB. so; asC. even; thanD. /; than20 Iron is more useful ___ any other metal.A. asB. thanC. thenD. so。

高中时间状语从句和练习[含答案解析]状语从句状语从句在句中作状语，修饰主句中的动词、形容词或副词等。

状语从句放在主句之前时，常用逗号分开;放在主句之后，一般不用逗号。

状语从句按其意义和作用可分为时间、原因、地点、条件、让步、目的、结果、方式、比较等9种。

1.时间状语从句时间状语从句表示主句动作发生的时间，主要由when，while，as ; before, after; till (until); once, by the time, as soon as, no sooner ... than和hardly ... when及名词词组the moment等引导。

1) when“在……的时候”; while “在……期间”; as “正当……的时候”when意为“在……的时候”，强调“特定时间”。

When spring came, he felt like a trip.When he was eating his breakfast, he heard the doorbell ring.说明：连词when在状语从句中还有如下几种含义：①表示突然发生的事，含义为“（正在……时）忽然”。

I was just coming along to see you when I ran into Wilson.I had been working a couple of months when I had a letter from Jane.②表示过早发生某事，意为“（还没……）就”。

此含义有时可用before代替。

I hadn’t been rea ding for half an hour when I heard steps outside.我刚读了不到半个小时就听到外面有脚步声。

I had been there little more than a week when I set to work in earnest.③表示“在……的情况下”，常可译为“虽然”，“既然”，“如果”。

状语从句副词性从句（状语从句）（一）时间状语从句：用一般现在时表将来1．When（当……时）引导●从句用一般现在时/现在完成时：when + S.+ do/have done……例：I will let you know when you come.●When it comes to +名词/动名词，表示“当涉及（谈）到…..”例：Doing your homework is a sure way to improve your test scores, and this is especially true when it comes to classroom tests.●若从句用一般过去时，主句用过去进行时/be about to（打算）结构，说明主句用来表示从句发生的背景，when就表示为“正在这时”例：I felt somewhat disappointed and was about to leave, when something occurred which attracted my attention.2．While（当……时）引导●从句用一般现在时/现在完成时：while + S.+ do/have done……3．As（正当……时，一边…..一边）引导4．Whenever（无论何时）引导5．Since（自从……以来）引导●主句过去完成时+ 从句一般过去时：S. + did…since S.+ had done●常见用法：It is + time + since……，表示“自从……以来有（一段）时间”例：It is two years since I last met her.6．Every/each time（每当）引导7．Before（在……之前、趁着……还没有、还没来得及）引导●若从句需要用情态动词的，只能用can/could例：Please tell me the truth before I can guess it.●常见用法：It is/was/will be + time +before……，表示“过一段时间（才）会……”例：“It is a long time since I saw you last.”“Yes. And it will be a time before we see each other again.”8．After（在……之后）引导9．Till/until（直到）引导●一般结构：not…（短暂v）...until……，表示“直到……才….”倒装结构：Not until…….，后面倒装强调结构：It is not until……that……例：They did not stop discussing until they came to a conclusion.= It was not until they came to a conclusion that they stopped discussion.= Not until they came to a conclusion, did they stop discussion.10．As soon as（刚……就）引导例：Come here as soon as you finished the work.11．The moment/minute/instant（刚……就）引导例：I recognized her the moment I saw her.12．Hardly/scarcely/(only)just……when（刚……就）引导●从句一般过去时+ 主句过去完成时：S. + had hardly/scarcely/(only)just done…,when S.+ did●若hardly/scarcely/(only)just置于句首，主句须倒装（had+ S.+ done）例：He had hardly left school when it began to rain.=Hardly had he left school when it began to rain.13．No sooner……than（刚……就）引导●从句一般过去时+ 主句过去完成时：S. + had no sooner done…, than S.+ did●若no sooner置于句首，主句须倒装（had+ S.+ done）例：We had no sooner reached the top of hill than we all sat down to rest.=No sooner had we reached the top of hill than we all sat down to rest.（二）地点状语从句1．Where（在……地方）引导：从句用一般现在时例：Where there is smoke, there is fire.2．Wherever（无论在哪里）引导例：Wherever he may be, he will be welcome.（三）条件状语从句：用一般现在时表将来1．If（如果、假如）引导：用虚拟语气●if引导得从句中，若有were, had, should三词，可以省略if，并且倒装（谓语置前）例：If I had known about it, I would have told you.= Had I known about it, I would have told you.●If从句+主句= 祈使句/省略句+ and +…….例：If you give me some food, I won’t die of starvation（饥饿）.= Some food and I won’t die of starvation;2．Suppose/supposing（假设）引导例：Suppose we cannot get the necessary equipment（设备）, what shall we do? 3．Unless（除非、如果不）引导●Unless从句+主句= 祈使句/省略句+ or +…….例：Unless you give me another drink, I will die of thirst.= Another drink or I will die of thirst.4．As/so long as（只要）引导例：We can surely overcome these difficulties so long as we are closely united.5．If only/only if（只要）引导例：We can surely get gains, if only we work hard.6．In case/lest（万一）例：You should take good care of your kid, in case they are ill.7．Provided/Providing/Given that（假如）引导例：We will let you use the room provided that you keep it clean and tidy.8．On condition that（假如）引导（四）原因状语从句1．Because（因为）引导●表示“直接、唯一的原因”，通常放在句后，可以与not, but, only连用例：He was angry not because we were late but because we made a noise.2．As（因为）引导●表示“显而易见或大家都知道的原因”，语气较弱例：Everyone likes you as you are both kind and honest.3．Since（因为、既然）引导●表示“间接或附带的原因”，通常放在句首例：Since she insists, you must come.4．Now/seeing that（既然）引导例：Now/Seeing that you are all here, let’s try and reach a decision.5．Considering that （考虑到）引导例：Considering that he began learning English only a year ago, he speaks very well. 6．In that（由于、因为）引导例：He was late in that he didn’t catch the first bus.（五）让步状语从句1．Though/although/as（虽然）引导●Though/although…..yet连用，表示“虽然…..但是……”例：Though/although we cannot see air, (yet) it exists everyone.●as引导得从句置于句首，且倒装（表语、状语、动词置于as前）表语倒装：可以省略冠词例：Tried as I was, I stayed up late studying last night.Children as he is, he knows a lot of English.状语倒装：Fast as he read, you can’t finish novel in three days.谓语动词倒装：Try as he would, he couldn’t lift the rock.2．Even if/though（即使）引导例：Nobody lost his patience as though the meeting was long and boring. 3．However/no matter how（无论如何/怎样）引导例：We’ll continue to work, no matter how/however hot it is.4．Whatever/no matter what（无论什么）引导例：Whatever/no matter what r you may do, do your best.5．Whoever/no matter who（无论谁）引导例：Whoever/no matter who all cannot break the rules, we must keep the law. 6．Whether……or/no matter whether…..or….（不管……还是）引导例：Whether/no matter whether you can do or cannot do, you must try it. 7．Whether or not/whether……or not（不管是否……）引导例：Whether or not we had a baby, we couldn’t survive only on my salary.= Whether we had a baby or not, we couldn’t survive only my salary.（六）方式状语从句1．As（如，按照）引导例：When in Roma do as the Romans do.2．Just as（正如）引导例：Most plants need air just as they need water.3．As if/though（好像，仿佛）引导●引导的从句常用虚拟语气，除了叙述的情况实现的可能性较大例：He speaks English as if/though he were an Englishman.例：It looks as if/though the coming autumn harvest will be even better than the last one. （七）目的状语从句1．So that（以便、为了）引导●从句中谓语部分可以用can/could，may/might例：I will give you my phone number, so that you can call me when you arrive here. 2．In order to（以便、为了）引导●从句中谓语部分只能用may/might例：We should do our utmost最大可能in order that we may be able to overfulfil 超额完成the task.3．For fear that/lest（以免、以防）引导●从句用虚拟语气“should +V.”例：Batteries 电池must be kept in dry place for fear that/lest electricity should leak 渗漏away.4．In case（以免、以防）引导●从句中谓语部分不用虚拟语气例：Better take more clothes in case the weather is cold.（八）结果状语从1．that（因而）引导例：What’s the matter that they still haven’t answered our e-mail?2．so that（因而）引导●主句，+ so that，且从句中谓语部分只能用may/might例：The temperature is increased , so that the volume of the gas can become greater. 3．So…..that（如此……以至）引导●so +形容词/副词+a/an+名词+ that例：It is so hot a day that we cannot sleep.●so置于句首时，需倒装状语例：So fast did he run that I could not keep up with him●so + much/little/few/many + that，而不用such…..that例：She has so little education that she is unable to get a job.4．Such…..that（如此……以至）引导●Such +名词（可数的单数名词）+ that例：It is such a lovely day that everybody is feeling happy and gay.（九）比较状语从句1．Than（比……）引导例：There are more vocabularies in this unit than in that one.2．As……as（如……一样）引导●As +形容词/副词+a/an+名词+ as + 省略句例：He is as clever a boy as his brother.例：This book is nearly as thick as that one(is).3．Not so……as（不如……一样）引导●As +形容词/副词+a/an+名词+ as + 省略句例：You are not as tall as she.4．The+比较级，the+比较级（越……越…….）引导例：The hotter that air becomes, the lighter it gets.例题1、（）______ your daughter has not come back , let me take you to the Friendship Hospital.A WhenB SinceC ThatD For2、（）______ Tom is not feeling well today , he has to stay at home.A ThoughB ForC FindingD As3、（）They are ______ hard-working students that they have already made ______ much progress since thay came here.A so ; soB such ; suchC so ; suchD such ; so4、（）______ we have finished the book we shall start doing some exercises.A For nowB Since nowC Now thatD Since now5、（）He asked us not to be noisy ______ we should wake the baby.A in cseB in the caseC in case ofD in this case巩固练习1、（）______ you are familiar with the auther`s ideas , by reading all the sections as quickly as you can.A Ever sinceB As long asC So thatD Now that2、（）The boy has to learn ______ things that he hardly has time for play.A so manyB such manyC so fewD such few3、（）In the old days the poor worker worked long hours every day ______ he could support his whole family.A becauseB thoughC unlessD so that4、（）Tell him that I will call him back , ______ he gives me a call.A in most casesB in caseC in any caseD in case of5、（）______ you have reminded me , I will try to be a teacher.A Now thenB So thatC Now thatD In order that6、（）You will have to study for many years ______ you may become a brain surgeon.A in order thatB in thatC althoughD soKey 1~5 BDDCA 1~6 DADBCA二、习题1、（）It is almost impossible to become skilful in speaking a language ______ you use it constantly.A but forB if onlyC exceptD unless2、（）Everything will be all right ______ Tom is left to do the work in his own way.A as far asB mean whileC so long asD in case3、（）Do remind me of the date again tomorrow ______ I forget.A in caseB except thatC even ifD as though4、（）You must do the experiment ______ the teacher told you.A asB sinceC so thatD unless5、（）I could not resist having another piece of cake even ______ I was supposed to lose weight.A althoughB howeverC otherwiseD though6、（）______ I suggest , he always disagree.A WhatB HowC WhateverD How a7、（）However ______ you hate them , you must work with them.A very muchB too muchC much tooD much8、（）Try ______ he might , Tom could not get out of the trouble.A as ifB altoughC ifD as9、（）______ whales are very large , they are no longer an even match for man.A SinceB BecauseC Now thatD Although10、（）Man must have food just ______ plants must have sunlight.A forB likeC becauseD as巩固练习1、（）______ I know , the visitors are all satisfied with the arrangement in the next few days.A As far asB As long asC As well asD As soon as2、（）______ convincing an argument is , it needs support of evidence.A No matterB ThoughC HoweverD As3、（）Anyone can borrow books from the library ______ he has a library card.A so long asB sinceC even thoughD unless4、（）______ much advice I gave him , he did exactly what he wanted to do.A HowB WhateverC WhatD No matter how5、（）Remember , science requires your whole life ______ you had two lives to give , they would not be enough.A AlthoughB ThoughC If onlyD Even if6、（）I am sure that Laura`s latest play , ______ staged , will prove a great success.A sinceB unlessC onceD until7、（）Send us a message , ______ you have any difficulty.A in case thatB in caseC whileD as8、（）Electricity flows through a wire ______ water flows through a pipe.A whileB just asC much asD whenever9、（）Food shortage will long be a world problem ______ much has been done to supply enough for everyone.A althoughB evenC no matterD since10、（）I do not like the city , ______ though I have been living here for more than ten years.A evenB asC everD butkey1~5 DCAAD 6~10 CDDDD 1~5 ACADD 6~10 CBBAA。