八年级状语从句(一)

状语从句精讲状语从句在复合句中作状语，修饰动词、形容词或副词等。

状语从句可以表示时间、条件、原因、地点、目的、结果、让步、方式、比较等意义。

知识梳理：提纲挈领，抓住重点和难点！各类状语从句连接词（短语）一览表：时间 when, while, as, as soon as, since, until, after, beforeI will telephone you as soon as I arrive in Shanghai.She wants to be a teacher when she grows up.My mother came in while I was reading last night.条件 If, unlessWe will visit the museum if it doesn’t rain tomorrow.Our sports meeting will continue unless it rains tomorrow.原因 As, because, since, now thatTom didn’t go to school today because he was ill.Since he will not do it, I have to ask someone else.We have to go as it’s getting late.The day breaks, for the birds are singing.Now that you are free today, you may have a rest at home.地点 WhereI found the book where you left it.目的 So that, in order thatRead slowly so that everyone can follow you.结果So that, so…that, such…thatShe was so angry that she couldn’t say a word.She is such a lovely girl that we all like her.让步 though, although, even if, howeverThough he was very tired, he still worked hard.方式 AsI did as you told me.比较than, (not)as…as,The work isn’t as easy as I thought.The more you exercise, the healthier you will be.易混词解析：举一反三，学的更轻松！1. while, when, as的区别：when既可以指"时间点",与瞬间动词连用，也可以指"时间段"，与延续性动词连用（=while）。

如：When he came in, his mother was cooking.When (While) we were at school, we went to the library every day.While表示时间段,因此，while 从句的谓语动词要用延续性动词。

如：Please don't talk so loud while others are working.As与when用法相似，但着重强调主句动作与从句动作同时发生，有"随着……"或"一边……一边……"之意。

如：As you get older, you get more knowledge.随着年龄的增长，你获得的知识就越多。

2．Because, as, since 的区别：Because用于表示直接原因,回答why提出的问题，语气最强since表示显然的或已知的理由或事实，常译成"既然"，语气比because弱，主句的内容是全句句意的重心所在。

as 引出的状语从句，一般位于主句之前，表示的原因语气最弱。

如：Water is very important because we can't live without it.I'll do it for you since you are busy.We have to stay at home as it is raining.3．such…that, so…that, so that 引导结果状语从句的区别：such是形容词，修饰名词; so 是副词，修饰形容词或副词。

其结构如下：1) such + a (n)+ 形容词+单数可数名词+that……2) such+形容词+复数可数名词+that ……3) such +形容词+不可数名词+that……。

如：This was such a good film that I went to see it several times.They are such good books that they sell well.It was such bad weather that I had to stay at home.He spoke so fast that I couldn't follow him.He is such a lovely boy that we all like him.=He is so lovely a boy that we all like him.注：在"形容词+可数名词复数/不可数名词"结构中，当名词前有many, much, few, little 表示数量的多少时，名词前用so。

如：She made so many mistakes that she didn't pass the exam.练习与巩固：熟能生巧，取得好成绩！选择合适的连接词，完成下列句子。

1. Jim spends a lot of money on books ______he is not rich.2. Kate fell into sleep ______she was listening to the music.3. ----Is David at school today?----No. He is at home ______he has a bad cold.4. We won't have supper ______my mother comes back.5. Speak to him slowly ______he may understand you better.6. I’ll help you, ____ I don’t sleep for a night.7. It is four years ______I had left that small village.8. Jane, please turn off the lights ______ you leave the classroom.9. We will go to the park ______it doesn't rain tomorrow.10. _____ many children like KFC, I think they had better try not to eat it too often11. There are few new words in the passage ______we can't understand it.12. Go back ______you come from.13. The train had left ____ he reached the station yesterday.14. ----Do you have a swimming pool?----No, we don't. At least, not ______big ______yours.15. I haven’t heard from him ____ he went to America.16. It is raining hard, ______we have to stay at home.17. ______you work harder, you'll never pass the final exam.18. Look after the children ______I am out.19. The village is ______far away ______I can't get there on foot.20. That is ______an interesting book ______I can't stop reading it.21. She sang ____ she went along.22. Don’t leave the room ____ you have finished the work.23. We found the key ____ she had left it.24. ____ she is young, she knows quite a lot.25. It is ____ hot in the room ____ we have to go out for a walk.状语从句专练一．单项选择1 We will visit the Tian'anmen Square if it _____ rain tomorrow.A. doesn’tB. don’tC. won’tD. isn’t2 We ___ go to the Great Wall if it rains tomorrow. A. don’t B. won’t C. aren’t D. doesn’t3. I’ll let you know ____ he comes back. A. before B. because C. as soon as D. although4. Read it aloud _____ the class can hear you. A. so that B. if C. when D. although5. It is about ten years _____ I met you last. A. since B. for C. when D. as6. _____ she was very tired, she went on working. A. As B. Although C. Even D. In spite of7. I learned a little Russian _____ I was at middle school.A. thoughB. althoughC. as ifD. when8. _____ we got to the station, the train had left already. A. If B. Unless C. Since D. When9. _____ the rain stops, we' 11 set off for the station.A. BeforeB. UnlessC. As soon asD. Though10. She was _____ angry _____ she couldn’t say anything.A. so, thatB. such, thatC. very, thatD. so, as11. _____ there was something wrong with my bike, I came to school by bus this morning.A. sinceB. untilC. becauseD. though12. I'll stay here _____ everyone else comes back. A. even if B. as though C. because D. until13. Although it's raining, _____they are still working in the field.A. /B. butC. andD. so14. Speak to him slowly _____ he may understand you better.A. sinceB. so thatC. forD. because15. You'll miss the train ______ you hurry up. A. unless B. as C. if D. until16. We'd better hurry ______ it is getting dark. A. and B. but C. as D. unless17. John plays football _____ David.A. as wellB. as well asC. so wellD. so well as18 The meeting didn’t start___ everyone was there. A. because B. until C. why D. if19 The boy ___ to bed ___ his mother came in.A. went not; untilB. didn’t go; afterC. went; untilD. didn’t go; until20 I won’t bel ieve you___ I have seen it with my own eyes.A. beforeB. untilC. afterD. when21 If we work with a strong will, we can overcome any difficulty, _____ great it is.A. whatB. howC. howeverD. whatever22 I really don’t know who is our new physics teacher ___ you told me.A untilB afterC whenD though23 ___ it was so cold, he went out without a coat. A. But B. when C. Although D. Because24 The lights went out ____ they were reading. A. while B. before C. after D. if25 ____ he is very young, ___ he read a lot.A. Though, butB. Because, soC. Though, /D. When, and26 It’s a long time ___ I met him last time.A sinceB afterC beforeD when27. Don’t forget to turn off the lights __ you leave.A afterB untilC as soon asD before28. The problem is ___ difficult ___ few of us can work it out.A too, thatB very, thatC so, thatD so, and29. Tom d idn’t go to school yesterday ____ he was ill.A. becauseB. soC. untilD. if30. It was ____ that she couldn’t finish it by herself.A. so difficult a workB. such a difficult workC. so difficult workD. such difficult work31. I won't believe you______ I have seen it with my own eyes.A. beforeB. untilC. afterD. when32. Tom will call me as soon as he ___ Shanghai.A. arrivesB. will reachC. arrives inD. get to33. I'm sure he'll come to see me before he ___ Beijing.A. will leaveB. is leavingC. leaveD. leaves34. We ___ TV when the telephone ____.A. watched; was ringingB. were watching; rangC. watch; ringsD. are watching; rang35. I won't go to see the film tonight, because I ___ my ticket.A. lostB. have lostC. will loseD. didn't lose36. I ___ him since I began to live in the city.A. knowB. have knownC. knewD. will know37. May I sit nearer ______I can see more clearly?A. as ifB. so thatC. even ifD. so38. ___ he came to study in the university, he has made much progress in the study of English.A. WhileB. WhenC. SinceD. After39. I don’t know if he _____ tomorrow.A. comesB. will comeC. comeD. has come40. I wonder when Lucy _____ back from Beijing.A. will comeB. comesC. comeD. has come二．改错1. The children were running on the playground as fast as they can.2. Since her husband had died, so she had to support her family.3. He won't go out until his mother will come.4. He was very foolish that he didn't pass such an easy exam.5. Tom had gone out while his mother got home.6. It was three months since he came to our school.7. The playground of our school is larger than their school.8. The streets in Nanjing are wider than Shanghai.9. Whatever there is plenty of sun and rain，the fields are green.10. He is cleverer than any boy in his class.状语从句精讲与练习一参考答案1.though2.while3.because4.until5. so that6. Even if/ though7.since8.before9.if 10. although11. but 12.where 13.when 14.as(so), as 15. since16. so 17.unless 18.while 19.so, that 20.such, that21. as 22. until 23. where 24. Although 25. so, that状语从句专练二参考答案I、1. since2. unless3. because4. where5. after6. than7. as if8. so that 9. before10. asII、1. can 改为could 2. 去掉so 3. will come改为comes 4. very改为so 5. while 改为when 6. was 改为is 7. than 之后加上that of 8. than 后加those in 9. whatever改为wherever 10. any boy之间加上otherIII、1. whether we have enough time 介词宾语从句2. he asked 定语从句where the electrical equipment should be stored表语从句。