原因狀語從句ppt課件

1、一.原因狀語從句,二.結(jié)果狀語從句,三.練習(xí)題,姚霞飛,孟丹丹,張志艷,1,1.定義：說明主句原因的句子叫原因狀語從句,2.時態(tài)：原因狀語從句一般都是根據(jù)實際情況選用適當(dāng)?shù)臅r態(tài)。通常是主過從過，主現(xiàn)從現(xiàn)。,3.常用引導(dǎo)詞: because (因為), since (既然), now that(既然), as (由于), for(因為）,2,4.because，since和as的區(qū)別：,1）because“因為”，表示直接的原因，語氣最強(qiáng)。 why提問的句子，必須用because回答。,eg:I stayed at home because it rained.,3,2) since引導(dǎo)的原因狀

2、語從句一般放于主句之前表示已知的、顯然的理由(通常被翻譯成“既然”= now that），較為正式，語氣比because弱。,eg: Since you dont trust him, you should not employ him.,eg: Now (that) you are grown up, you should not rely on your parents.,4,3)as引導(dǎo)原因狀語從句時表示附帶說明的“雙方已知的原因”，含有對比說明的意味，語氣比since弱，較為正式，位置較為靈活(常放于主句之前),eg：As it is raining, youd better take

3、 a taxi.,5,4)for引導(dǎo)的是并列句，表示原因，但并不說明主句行為發(fā)生的直接原因，只提供一些輔助性的補(bǔ)充說明，for引導(dǎo)的并列句只能放于主句之后并且必須用逗號將其與主句隔開。,返回,eg：He seldom goes out now, for he is very old,6,1.定義：在句中用來作結(jié)果狀語的句子叫結(jié)果狀語從句。,2.常用引導(dǎo)詞: so that (如此以致), such that (如此以致),3.時態(tài)：結(jié)果狀語從句一般都是根據(jù)實際情況選用適當(dāng)?shù)臅r態(tài)。也通常是主過從過，主現(xiàn)從現(xiàn)。,7,4.結(jié)果狀語從句的句型：,結(jié)果狀語從句的從句部分是補(bǔ)充說明主句中謂語動詞發(fā)生的結(jié)果

4、的，通常位于主句之后。結(jié)果從句中通常不用情態(tài)助動詞，但must, can, could除外。結(jié)果狀語從句其規(guī)律由so與such的不同詞性決定。such是形容詞，修飾名詞或名詞詞組，so是副詞，只能修飾形容詞或副詞。so還可與表示數(shù)量的形容詞many,few,much,little連用，形成固定搭配 。,8,1) so + 形/副+ that 從句,eg:The boy is so young that he cant go to school.,2) so + many/few（+復(fù)名）+ that從句,eg: There are so many picture-story books tha

5、t the boy wont leave.,9,3) so + much/ little（+ 不可數(shù)名詞）+that從句,eg：He gave me so little time that it was impossible for me to finish the work on time.,4) so+ 形+ a/an+ 單名+ that從句,eg：It was so hot a day that they wanted to go swimming.,10,5) such+ a/an+ 形+單名+ that從句= so+ 形+ a/an+單名+ that從句,eg：He is such

6、a young boy that he cant go to school. = He is so young a boy that he cant go to school.,11,6）such+形+復(fù)名/不可數(shù)名詞+that從句,eg：They are such fine teachers that we all hold them in great respect,返回,12,5、結(jié)果狀語從句與簡單句的轉(zhuǎn)換：,1) so that (從句為肯定句) = 形/副 + enough + (for sb.) to do sth,eg：He is so old that he can go to

7、 school alone. = He is old enough to go to school alone.,13,2) so that (從句為否定句) = too + 形/副 + (for sb.) to do sth.,eg：The problem is so hard that I cant work it out. = The problem is too hard for me to work out.,14,1. _ youve got a chance, you might as well make full use of it. A. Now that B. After

8、C. Although D. As soon as,解析：主句與從句之間存在因果關(guān)系，且“youve got a chance”表示一個顯而易見的原因，因此應(yīng)選用表原因的now that。,15,2.He found it increasingly difficult to read, _ his eyesight was beginning to fail. A. and B. for C. but D. or,解析：“his eyesight was beginning to fail”是“he found it increasingly difficult to read”的原因， 因此

9、本題應(yīng)選用可以表示原因的連詞for引導(dǎo)原因狀語從句。,16,3.The book was written in easy English even primary school students could understand it. A.so;that B.such;that C.too;to D.very;that,解析 ：根據(jù)題意從A和B中選，因為easy English是表示簡單英語，屬于名such修飾名詞，所以本題選B,17,4.Zhou libo is shanghais favourite funny man.He is good at making people laugh.

10、 His lively shous werehot that tickets sold out in minnutes. A.very B.too C.such D.so,解析：從題意可知周立波是一個非常熱 情的人，句中hot屬于形容詞所以本題選D.,18,5.-You study hard you are sure to pass the exam. -Thank you for saying so. A.enough ;to B.as;as C.so;that,解析:根據(jù)翻譯 你學(xué)習(xí)這么刻苦肯定通過考試。hard是形容詞所以選C,19,6.This meeting is important

11、 that you mustnt miss it. A.Very B.such C.so D.too,解析；翻譯是 如此重要，句中important屬于形容詞所以選C,20,7.She was angry couldnt say a word . A.so;as B.so;that C.too;to D.very;that,解析:本題翻譯是她很生氣，都不能怎樣怎樣。所以根據(jù)翻譯本題應(yīng)選B.sothat 中文翻譯 如此以至于，所以本題選B,21,8.- good time we had at the party last night. -Yes.It was exciting party that I would never forget