原因、結(jié)果、目的狀語(yǔ)從句講解和練習(xí)(答案).

1、原因狀語(yǔ)從句(1) 原因狀語(yǔ)從句通常由because, since, as,for引導(dǎo)。(2)because表示直接原因，語(yǔ)氣最強(qiáng)。because引導(dǎo)的原因狀語(yǔ)從句多放在主句之后?；卮鹩蓋hy提出的問(wèn)題，只能用because。此外， because和 so 不能 同用在一個(gè)句子里。例如：- Why arent going there? - Because I don t want to.since引導(dǎo)原因狀語(yǔ)從句，相當(dāng)于now that，意思是 “因?yàn)椋热唬?鑒于 ”。例如：Since the rain has stopped， lets go for a walk. 既然雨停了，我們出去散

2、散步吧。as和since語(yǔ)氣較弱，一般用來(lái)表示明顯的原因。由as和since引導(dǎo)的原因狀語(yǔ)從居多放在句首。例如： As he has no car, he cant get there easily.Since we have no money, we can t buy it.(4)for 表示所說(shuō)的理由是一種補(bǔ)充說(shuō)明,for 引導(dǎo)的從句一般不放在句子的開(kāi)頭。如I decided to stop and have lunch, for I was feeling quite hungry.:小試牛刀：I was late for class yesterday _ there was som

3、ething wrong with my bike.He took off his coat _ he felt hot.you can t answer the question, I ll ask someone else.結(jié)果狀語(yǔ)從句(1) 結(jié)果狀語(yǔ)從句由sothat, suchthat, so that 引導(dǎo)。(2) soth at 語(yǔ) such.that可以互換。在由so.that引導(dǎo)的結(jié)果狀語(yǔ)從句中，so 是副詞，與形容詞連用。其結(jié)構(gòu)是 : .“so +形容詞（副詞）+ that +從句 ”。例如： He was so glad that he couldnt say a word

4、.Mother lives so far away that we hardly ever（幾乎不，從來(lái)不）see her.在由 suchthat引導(dǎo)的結(jié)果狀語(yǔ)從句中，such 是形容詞，它修飾的可以是單數(shù)或復(fù)數(shù)可數(shù)名詞，也可以是不可數(shù)名詞；其結(jié)構(gòu)是: .“such +a / an +形容詞 +名詞 + that +從句 ”。例如： It was such a hot day that nobody wanted to do anything.He had such long arms that he could almost touch the ceiling.（天花板）有時(shí)上述兩種結(jié)構(gòu)是可

5、以互換的。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) 如果名詞前由many, much, little, few等詞修飾時(shí)，只能用so, 不用 such 。例如： Soon there were so many deer that they ate up all the wild roses.He has so little time that he can t

6、 go to thema cinewith you.（ 4）如果主從句的主語(yǔ)相同，并且從句是否定的形式，可以用too.to. 句型轉(zhuǎn)化。例如： He was so excited that he couldnt go to sleep that night. = He was too excited to go to sleep.（ 5）如果主從句的主語(yǔ)相同，但從句是肯定的形式，可以用adj.+ enough替換。例如： He is so old that he could go to school. = He is old enough to go to school.他夠大了，可以去上學(xué)。

7、小試牛刀：It is _ hot in the room _ we have to go out for a walk.It wasa wonderful movieall of us wanted to see it again.There werelittle water in the bottlethe bird couldn t reach it.He is so young that he couldntgo to school.=.The classroom is so big that it can hold 100 person. =.目的狀語(yǔ)從句(1) 目的狀語(yǔ)從句通常由so

8、 that, in order that（為了，以便）引導(dǎo)。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可引導(dǎo)目的狀語(yǔ)從句，此時(shí)可用to 或 in order to替換 ,將其改為簡(jiǎn)單句。例如： He got up early so that he could get to school on time.=He got up early（ in order ） to get to school

9、 on time.(3)so that既可引導(dǎo)目的狀語(yǔ)從句，又可引導(dǎo)結(jié)果狀語(yǔ)從句。區(qū)別這兩種從句的辦法有兩個(gè)：1) 目的狀語(yǔ)從句里往往帶有情態(tài)動(dòng)詞can, could, may, might等。 2) 從意思上看，目的狀語(yǔ)從句往往表示的目的很明確。例如： Speak clearly so that they may understand you. (目的狀語(yǔ)從句)Jack is badly ill so that he has to rest.( 結(jié)果狀語(yǔ)從句)小試牛刀：I hurriedWe should go by bus _May I sit nearerI wouldnt be lat

10、e for class.we can get there earlier.I can see more clearly?一、單項(xiàng)選擇。1 We ll stay at home if it _ tomorrow.A rainB rainsCis rainingD will rain2 We didn t go home _ we finished the work.A sinceB untilC becauseD though3 She _ when I went to see her.A is readingB have readC was readingD reads4 _ the rain

11、 stops, we ll set off for the station.A BeforeB UnlessC As soon asD Though5 She looks forward every spring to _ the flower-lined garden.A visitB paying a visitC walk inD walking in6 Mr. White hoped he _ China the next year.A would visitB will visitC visitedD has visited7 I told him that the sun _ in

12、 the east.A risesB roseC has risenD was rising8 She was _ tired _ she could not move an inch.A so, thatB such, thatC very, thatD so, as9A thatB sinceC becauseD10 I didn t know what _.A was the matterB is the matterC the matter was11 I couldn t agree with _ at the meeting.A that you saidBwhich you sa

13、idC what did you say12 The bad man ran away to avoid _ and was finally put into prison.A seeingB to be seenC being seenD to be caughtD the matter isD what you said13 Everyone except Jim and Jack _.A know who is heB know who he isC knows who is heD knows who he is15 It is ten years _ I left my hometo

14、wn.A sinceB IfC whetherD until16 Could you tell us _ Mr. Brown lives in Room 202？A thatB whereC untilD if17 I learned a little Russian _ I was at middle school.A thoughB althoughC as ifD when18 I don t know _ or not it will rain tomorrow.A thatB WhenC ifD whether19 Why is their classroom so clean an

15、d tidy？ _ it is cleaned every day.A SinceB AsC BecauseD For20 Can you tell me _ is going to give us a talk next Monday？A whoB whomC whoseD 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 up_I may see it.A. thoughB. so

16、 thatC. asD. than23.I hurried_I wouldnt be late for class.A. soB. so thatC. ifD. unless24.We should go by bus _ we can get there earlier.A. as soon asB. whereC. in order thatD. as25.The dictionary is so expensive _ I cant buy it.A. becauseB. whenC. thatD. if26.I got there _ late _ I didnt see him.A.

17、 too; toB. such; thatC. so; thatD. so; as27.It is _ hot in the room _ we have to go out for a walk.A. such; thatB. so; thatC. as; asD. such; as28.He has_ an interesting book that we want to read it.A. soB. suchC. the sameD. as29.Betty didnt go to see the film yesterday _ she was ill.A. becauseB. butC. untilD. if30.He took off his coat _ he felt hot.A. becauseB. asC. ifD. since31.The lady wasfat that she was not fit for this skirt.A. tooB. asC. suchD. so32.Our PE teacher walkswe can tcatch up with