最新原因、结果、目的状语从句讲解和练习

1、原因状语从句(1) 原因状语从句通常由 because, since, as,for 引导。(2) because 表示直接原因，语气最强。 because 引导的原因状语从句多放在主句之后。回答由 why 提出的问 题，只能用 because 。此外， because 和 so 不能 同用在一个句子里。例如： Why aren t going there? Because I don t want to.since 引导原因状语从句，相当于 now that ，意思是 “因为 ，既然 ， 鉴于 ”。 例如： Since the rain has stopped ， let s go for

2、a walk. 既然雨停了，我们出去散散步吧。 as 和 since 语气较弱，一般用来表示明显的原因。由 as 和 since 引导的原因状语从居多放在句首。 例如 ： As he has no car, he can t get there easily.Since we have no money, we can t buy it.(4)for 表示所说的理由是一种补充说明 ,for 引导的从句一般不放在句子的开头。如 :I decided to stop and have lunch, for I was feeling quite hungry.小试牛刀：I was late for

3、 class yesterday there was something wrong with my bike.He took off his coat he felt hot.you can t answer the question, I ll aesokn seo melse.结果状语从句（1）结果状语从句由 so that, such that, so that 引导。（2）so that 语 such.that 可以互换。在由 so.that 引导的结果状语从句中， so 是副词，与形容词连用。其结 构是 : .“.so + 形容词（副词） + that + 从句 ”。例如： He

4、was so glad that he couldn t say a word.Mother lives so far away that we hardly ever（几乎不，从来不） see her.在由 such that 引导的结果状语从句中， such 是形容词，它修饰的可以是单数或复数可数名词，也可以是不 可数名词；其结构是 : .“.such +a / an + 形容词 + 名词 + that + 从句 ”。例如： It was such a hot day that nobody wanted to do anything.He had such long arms that

5、he could almost touch the ceiling.（天花板）有时上述两种结构是可以互换的。例如： It was such a wonderful film that all of us wanted to see it again.=The film was so wonderful that all of us wanted to see it again.（3）如果名词前由 many, much, little, few 等词修饰时，只能用 so, 不用 such 。 例如： Soon there were so many deer that they ate up al

6、l the wild roses.He has so little time that he can t go to the cinema with you.（ 4）如果主从句的主语相同，并且从句是否定的形式，可以用too.to. 句型转化。例如： He was so excited that he couldnt go to sleep that night. = He was too excited to go to sleep.（ 5）如果主从句的主语相同，但从句是肯定的形式，可以用adj.+ enough 替换。小试牛刀： It is例如： He is so old that he c

7、ould go to school. = He is old enough to go to school.他够大了，可以去上学。hot in the room _ we have to go out for a walk.It was a wonderful movie all of us wanted to see it again.There werelittle water in the bottlethe bird couldn t reach it.He is so young that he couldn t go to school.=.The classroom is so

8、big that it can hold 100 person. =目的状语从句 (1)目的状语从句通常由 so that, in order that (为了，以便)引导。 例如： We started early so that we could catch the first train.We used the computer in order that we might save time.(2)so that 可引导目的状语从句，此时可用 to 或 in order to 替换 ,将其改为简单句。 例如： He got up early so that he could get t

9、o school on time.=He got up early ( in order ) to get to school on time.(3) so that 既可引导目的状语从句，又可引导结果状语从句。区别这两种从句的办法有两个：1)目的状语从句里往往带有情态动词 can, could, may, might 等。 2)从意思上看，目的状语从句往往表示的目的很明确。例如： Speak clearly so that they may understand you. ( 目的状语从句 )Jack is badly ill so that he has to rest.( 结果状语从句

10、)小试牛刀： I hurriedI wouldnt be late for class.We should go by bus _ we can get there earlier. May I sit nearerI can see more clearly?、单项选择。1 We ll stay at home if it tomorrow.A rainB rainsC is raining2 We didn t go home we finished the work.A sinceB untilC because3 She when I went to see her.A is read

11、ing B have read C was reading 4 the rain stops, we ll set off for the station.D will rainD thoughD readsA BeforeB UnlessC As soon asD Though5 She looks forward every spring to the flower-lined garden.A visitB paying a visitC walk in6 Mr. White hoped he China the next year.A would visitB will visitC

12、visitedD walking inD has visited7 I told him that the sun in the east.A risesB roseC has risenD was rising8 She was tiredshe could not move an inch.Aso, thatB such, thatC very, thatDso, as9A thatB sinceC becauseDC the matter wasD the matter is10I didn t know whatA was the matterB is the matter11 I c

13、ouldn t agree with at the meeting.Athat you saidBwhich you saidC what did you sayD what you said12 The bad man ran away to avoid and was finally put into prison.A seeing Bto be seenC being seen D to be caught13 Everyone except Jim and Jack .A know who is heB know who he isC knows who is heD knows wh

14、o he is15It is ten years I left my hometown.AsinceBIfC whetherD until16 Could you tell us Mr. Brown lives in Room 202？A thatB whereC untilDif17I learned a little Russian I was at middle school.A thoughB althoughC as ifD when18I don t know or not it will rain tomorrow.A thatB WhenC ifD whether19 Why

15、is their classroom so clean and tidy？ it is cleaned every day.A SinceB AsC BecauseD For20 Can you tell me is going to give us a talk next Monday ？AwhoBwhom C whose D what21. Please answer the question in a loud enough voice _ all the class may hear.A. so, thatB. orC. in order thatD. and22. Lift it u

16、p_I may see it.A. though B. so that C. as D. than23. I hurried_I wouldnt be late for class.A. so B. so that C. if D. unless24. We should go by bus _ we can get there earlier.A. as soon as B. where C. in order that D. as25. The dictionary is so expensive _ I cant buy it.A. becauseB. whenC. that D. if

17、26. I got there _ late _ I didnt see him.A. too; to B. such; thatC. so; thatD. so; as27. It is _ hot in the room _ we have to go out for a walk.A. such; that B. so; thatC. as; asD. such; as28. He has_ an interesting book that we want to read it.A. soB. suchC. the same D. as29. Betty didnt go to see the film yesterday _ she was ill.A. becauseB. butC. until D. if30. He took off his coat he felt hot.A. because31. The lady wasB. as C. if D. sincefat that she was not fit for this skirt.B. asA. too32. Our PE teacher walksC. suchA. so quick that33. Mrs. Green isA. so a nice la