条件状语从句练习题及答案精品文档条件状语从句练习题及答案表示在某种条件下某事很可能发生。

If we pay much attention to the earth, we’ll have a better world.如果我们多关爱地球，就会拥有一个更美好的世界If it rains tomorrow, what shall we do?如果明天下雨，我们怎么办,注意:if还可以引导虚拟条件句，表示不可实现的条件，从句中多用一般过去时或过去完成时。

What would happen if there were no water ?如果没有水会怎样,2.unless引导的条件状语从句unless的意思是如果不，除非。

可与if...not互换。

You will fail in English unless you work hard.你英语考试会不及格的，除非你更加努力。

3.as /so long as引导的条件状语从句as /so long as意思是“只要”So long as you’re happy,i will be happy.只要你高兴，我就高兴。

4.once引导的条件状语从句once引导的条件状语从句，意为“一旦...，就”，1 / 17精品文档从句可置于主句前或后Once you begin,never stop.一旦开始，就绝不要停止Maths is easy to learn once you understand therules.一旦你理解了规则，数学就不难学了。

提示:在条件状语从句中，用一般现在时代替一般将来时，用一般过去时代替过去将来时。

If the weather isbad next week, we’ll put off the climbing.如果下周天气不好，我们将推迟爬山。

2013-7-222013-7-232013-7-242013-7-25状语从句由从句担任的状语，在句子中可修饰谓语、形容词、副词或是整个句子，它可以用来表示时间、地点、原因、目的、结果、条件、方式、比较、让步等。

状语从句是一较大的语法项目，也是近几年高考题中常见的一个重要试点。

高考中已考查了时间、让步、地点、条件、目的等状语从句，这些从句仍是今后高考热点，应作充分准备。

同时对方式状语从句也应引起重视。

2 / 17精品文档时间状语从句表示时间的状语从句可由when, as, while, whenever,after, before, till , since, once, as soon as , by the time, no sooner … than, hardly … when, every time等引导。

e.g. When I came into the office, the teachers were having a meeting.He started as soon as he received the news. Once you see him, youwill never forget him. No sooner had I gone to bed than I went to sleep.原因状语从句原因状语从句是表示原因或理由的，引导这类从句的最常用的连词是because, since, as , now that等，for 表示因果关系时为并列连词，语气不如because强。

e.g. He is disappointed because he didn’t get the position.As it is raining, I will not go out. Now that you mention it, I do remember.地点状语从句引导地点状语从句的连词是where 和wherever等。

e.g. Sit wherever you like.Make a mark where you have a question.目的状语从句引导目的状语从句最常用的词是so, so that, in3 / 17精品文档order that, in case等。

She has bought the book in order that she could follow the TV lessons. He left early in case he should miss the train.结果状语从句结果状语从句是表示事态结果的从句，通常主句是原因，从句是结果。

由so that , so … that, such … tha t等引导。

e.g. She was ill, so that she didn’t attend themeeting.He was so excited that he could not say a word. She is such a good teacher that everyone admires her.条件状语从句条件状语从句分真实性与非真实性条件句。

引导条件状语从句的词主要有if, unless, so long as, oncondition that, so far as, if only 。

注意:条件从句中的if 不能用whether替换。

e.g. If he is not in the office, he must be out for lunch. You may borrow the book so long as you keep it clean. So far as I know, he will be away for three months. You can go swimming on condition that you don’t go too far away from the river bank.If he had come a few minutes earlier, he could4 / 17精品文档have seen her.让步状语从句让步状语从句可由although, though, as, even if , however, whatever, whether … or, no matter who 等引导。

注意:as引导的让步状语从句一般是倒装的。

e.g. Though he is a child, he knows a lot.Child as he is, he knows a lot. Whatever you say, I’ll neverchange my mind.方式状语从句方式状语从句常由as, as if , the way, rather than等引导。

e.g. You must do the exercise as I show you. He acted as if nothing had happened.比较状语从句比较状语从句常用than, so … as, the more …the more等引导。

e.g. I have made a lot more mistakes than you have.He smokes cigarettes as expensive as he can afford. The busier he is, the happier he feels.使用状语从句时要注意的几个问题1、在时间和条件从句中，主句是一般将来时，从句通常用一般现在时表示将来。

e.g. We’ll go outing if it doesn’t rain tomorrow.5 / 17精品文档I’ll write to you as soon as I get to Shanghai.、有些时间、地点、条件、方式或让步从句，如果从句的主语与主句主语一致，从句的谓语又包含动词be ，就可省略从句中的“主语+ be”部分。

e.g. When still a boy of ten, he had to work day and night.If asked you may come i n. If necessary I’ll explain to you again.、注意区分不同从句:引导的是什么从句，不仅要根据连词，还要根据判别。

以where为例，能引导多种从句。

e.g. You are to find it where you left it. I don’t know where he came from. This place is where they once hid.选择填空:1. I’ll let you know ____ he comes back.A. beforeB. becauseC. as soon asD. although2. She will sing a song ____ she is asked.A. ifB. unlessC. forD. since3. We will work ____ we are needed.A. wheneverB. becauseC. sinceD. wherever4. Read it aloud _____ the class can hear you.A. so thatB. ifC. whenD. although5._____ you go, don’t forget your people.6 / 17精品文档A. WheneverB. HoweverC. WhereverD. Whichever6. It is about ten years _____ I met you last.A. sinceB. forC. whenD. as7. They will never succeed, _____ hard they try.A. becauseB. howeverC. when8. _____ still half drunk, he made his way home.A. WhenB. BecauseC. Though9. _____ she was very tired, she went on working.A. AsB. AlthoughC. Even10. Busy _____ he was, he tried his best to help you.A. asB. whenC. since11. I learned a little Russian _____ I was at middle school.A. thoughB. althoughC. as if12. _____ we got to the station, the train had left already.A. IfB. UnlessC. Since13. _____ the rain stops, we’ 11 set off for the station.A. BeforeB. UnlessC. As soon as14. She was _____ tired _____ she could not move7 / 17精品文档an inch.A. so, thatB. such, thatC. very, that15. We didn’t go home _____ we finished the work.A. sinceB. untilC. because16. I’ll stay here _____ everyone else comes back.A. even ifB. as thoughC. because17. Although it’s raining, _____ are still working in the field.A. theyB. but theyC. and they18. Speak to him slowly _____ he may understand you better.A. sinceB. so thatC. for19. Yo u’ll miss the train ______ you hurry up.A. unlessB. asC. ifD. since D. As D. In spite of D. for D. when D. When D. Though D. so, as D. though D. until D. so they D. because D. until20. When you read the book, you’ d better make a mark _____ youhave any questions.A. at whichB. at whereC. the placeD. where21. We’d better hurry ______ it is getting dark.8 / 17精品文档A. andB. butC. asD. unless22. I didn’ t manage to do it _____ you had explained how.A. untilB. unlessC. whenD. before23._____ he comes, we won’t be able to go.A. WithoutB. UnlessC. ExceptD. Even24. I hurried _____ I wouldn’t be late for class.A. sinceB. so thatC. as ifD. unless25. _____ I catch a cold, I have pain in my back.A. Every timeB. ThoughC. EvenD. Where26. What’s the matter _____ they still haven’t answered the telegram?A. whenB. thatC. thoughD. however27. Bring it nearer _____ I may see it better.A. althoughB. even thoughC. so thatD. since28. You may arrive in Beijing early _____ you mind taking the night train.A. thatB. thoughC. unlessD. if29. Helen listened carefully _____ she might discover exactly what she needed.A. in thatB. in order thatC. in caseD. even though9 / 17精品文档30. More people will eat out in restaurants _____ they do today.A. thanB. whenC. whileD. as31._____ hard she tries, she can hardly avoid making mistakes in her homework.A. MuchB. HoweverC. AsD. Although32. Poor _____ it may be, there is no place like home, _____ you may go.A. as; whereverB. though; wheneverC. in spite of; whenD. that; wherever33. The child was __ immediately after supper.A. enough tired to go to bedC. so tired that he went to bedB. too tired to go to bed D. very tired, he went to bed条件状语从句练习精讲1---CDBAD---10 DAACB11---1CBCBC?.单项选择1. If you _____ to the party, you’ll have a greattime.A. will goB. wentC. goD. going2. It will be a long time ____ Peter _____ his10 / 17精品文档work.A. since, has finishedB. after, finishesC. when, will finish3. What will father _____ us from Japan?A. takeB. bringC. carryD. make4. Weifang is famous ______ kitesA. forB. toC. onD. with5( I ____ her the answer if she ____me.A. can tell, will askB. will tell, will askC. would tell, ask6. – What are you going to do tomorrow?--We’ll go to the library tomorrow if it ___.A. isn’t rainB. rainC. won’t rainD. doesn’t rain7.—Do you know when he will come back tomorrow?--Sorry, I don’t know. When he ____ back, I’ll tell you.A. comesB. will comeC. comeD. may come8. What will you do if you _____ to the old folk’s home visit?A. goB. wentC. goingD. will go9. If I eat ____ food, I’ll be very fat.11 / 17精品文档A. too manyB. many tooC. too muchD. much too10. I’ll give the book to him if he ___ here next S unday.A. will comeB. comesC. is comingD. cameD. before, finishes. D. will tell, asks11. There ____an English film in our school tomorrow.A. is going to haveB. will haveC. is going to beD. has12. Could you tell us where ____,A. will the next Olympic Games heldB. the next Olympic Games will be heldC. would the next Olympic Games be heldD. the next Olympic Games would be held13. When my mother returned last night, I ____ a book.A. readB. am readingC. was readingD. am going to read14. What ____ you ____ when it began to rain?A. do, doB. were, doingC. are, doingD. did, do15. I’ll wake you up when he ____back.A. willB. is going to comeC. comesD. come12 / 17精品文档二、用所给词的适当形式填空1. If you ________ tired, you _________ to have a rest.2. Where _____ he ____ the film if he _________ time?3. If there ____ fewer trees, there _______ more pollution.4. He ___ more casually if he ___ on weekends.5. If Marcia _______ alone, she _______ a pet parrot.6. Lana _____ a new dress if the old one ____ out of style.7. The twins _______ if they__________ .8. I ______ a bake sale if I ____ money for education.9. Peter ____ me a beautiful souvenir if he ____ Spain.10. If Mr. Green _______ I am hard- working, my parents ___ glad.11. I ______ to the beach if it________ this week.12. _____they ___ a match if the P.E. teacher __13 / 17精品文档busy?13. He ____ a letter to his grandparents if he ____ his report card this week.14. If she ______ up late, she _____ the early bus.15. Peter ____ in English if he ____ the exams in Peking University. III完成句子1.如果他到的晚了会发生什么事情,What _______________ if he _____________ late?2. 如果努力学习，你就会取得好成绩。