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1、十一 名词性从句语法精讲 一主语从句主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。It doesnt interest me whether you succeed or not.It is in the morning that the murder took place. It is John that broke the window.1. 用it 作形式主语的结构 (1) It is 名词从句 It is a fact that the earth is round. It is an honor that many specia
2、lists came to our English class. It is common knowledge that you say “ hello ”to your teacher when you first meet her at school. It is a rule that we should come to class before 8 cclock. (2) it is 形容词从句 It is natural that he cant speak excellent Chinese, as he is an Australian. It is strange that s
3、he came to school late this morning. (3) it is 不及物动词从句 It seems that it is going to rain. It happened that I met an old friend of mine in the street yesterday.(4) it 过去分词从句 ( It is reported/said/proved/believed/known/expected/thought) It is reported that China is going to launch “ Sheng Zhou” Six th
4、is year.It has been proved that you are wrong.It is said that that was how Chinese first raised silkworms.2. 主语从句不可位于句首的五种情况 (1) if 引导的主语从句不可居于复合句句首。 (2) It is said , (reported) 结构中的主语从句不可提前。例如： It is said that President Jingo will visit our school next week. (right) That President Jingo will visit
5、our school next week is said. (wrong) (3) It happens, It occurs 结构中的主语从句不可提前。例如： It occurred to him that he failed in the examination. (right) That he failed in the examination occurred to him. (wrong) (4) It doesnt matter how/whether 结构中的主语从句不可提前。例如： It doesnt matter whether he is wrong or not. (ri
6、ght) Whether he is wrong or not doesnt matter. (wrong) (5) 含主语从句的复合句是疑问句时，主语从句不可提前。例如： Is it likely that it will rain in the evening? (right) Is that will rain in the evening likely? (wrong)3. What 与that 在引导主语从句时的区别 What 引导主语从句时在句时在从句中充当句子成分，如主语宾语表语，而that 则不然。例如： 1) What you said yesterday is right.
7、 2) That she is still alive is a consolation.二宾语从句 宾语从句就是在复合句中作宾语的名词性从句，通常放在主句谓语动词（及物动词）或介词之后。1. 作动词的宾语 (1) 由that引导的宾语从句（that 通常可以省略）,例如： I heard that he joined the army. (2) 由what, whether (if) 引导的宾语从句，例如： 1) She did not know what had happened. 2) I wonder whether you can change this note for me. (
8、3) 动词间接宾语宾语从句。例如： She told me that she would accept my invitation.2. 作介词的宾语 例如：Our success depends upon how well we can cooperate with one another.3. 作形容词的宾语 例如：I am afraid (that) Ive made a mistake. 4. It 可以作为形式宾语 It 不仅可以作为形式主语，还可以作为形式宾语而真正的宾语that 从句则放在句尾，特别是在带复合宾语的句子中。 例如：We heard it that she woul
9、d get married next month.We make it clear that we wont come back till next week.5. 后边不能直接跟that 从句的动词 这类动词有allow, refuse, let, like, cause, force, admire, want, need ,celebrate, dislike, love, help, take, forgive等。这类词后可以用不定式或动名词作宾语，但不可以用that引导宾语从句。 I admire their winning the match. (right) I admire t
10、hat they won the match. (wrong)6. 否定的转移 若主句谓语动词为think, consider, suppose, believe, expect, fancy, guess, imagine等，其后的宾语从句若含有否定意义，一般要把否定词转移到主句谓语上，从句谓语用肯定式。例如： I dont think this dress fits you well.（我认为这件衣服不适合你穿。）7. Whether 和 if 区别。A. 主语从句用whether, 不用if.B. 在不定式之前用whether, 不用if.C. 在介词之后用whether, 不用if.D
11、. 在discuss/discussion/no difference等之后用whether.E. 在宾语从句中用whether or not或者whetheror not,或者if.or not,但不能用if or not.三表语从句 表语从句在复合句中作表语的名词性从句，放在系动词之后，一般结构是“主语连系动词表语从句”。可以接表语从句的连系动词有be, look, remain, seem等。引导表语从句的that常可省略。另外，常用的还有the reason is that 和It is because 等结构。例如： 1) The question is whether we can
12、 make good preparation in such a short time. 2) This is why we cant get the support of the people 3) But the fact remains that we are behind the other classes. 4) The reason why he is late for school is that he missed the early bus.四同位语从句 同位语从句就是在复合句中作名词的同位语的名词性从句。1. 同位语从句的功能 同位语从句对于名词进一步解释，说明名词的具体内
13、容，一般由that引导，例如： 1) The kings decision that the prisoner would be set free surprised all the people. 2) The order that all the soldiers should stay still is given by the general.2. 同位语在句子中的位置 同位语从句有时可以不紧跟在它所说明的名词后面，而是被别的词隔开。例如： He got the news from Mary that the sports meeting was put off.3. 同位语从句与定语
14、从句的区别 定语从句中的that既代替先行词，同时又在从句中作某个成分（主语或宾语），而同位语从句中的that是连词，只起连接主句与从句的作用，不充当句中任何成分。 定语从句是形容词性的，其功能是修饰先行词，对先行词加以限定，描述定的性质或特征；同位语从句是名词性的，其功能是对名词进行补充说明。例如： 1) The news that he told me is that Tom would go abroad next year.（他告诉我的消息是汤姆明年将出国。）（第一个that引导的从句是定语从句，that在从句中作宾语） 2)The news that Tom would go abr
15、oad is told by him.（汤姆将出国的消息是他讲的。）（同位语从句，that在句中不作任何成分）语法精练：1. It worried her a bit _ her hair was turning grey. A. while B. that C. if D. for2. _ he said at the meeting astonished everybody present. A. What B. That C. How D. The fact3. _ well go camping tomorrow depends on the weather. A. If B. Whe
16、ther C. That D. Where4. _ the 2008 Olympic Games will be held in Beijing has already been known. A. Whether B. If C. That D. What5. _ is a fact that English is being accepted as an international language. A. There B. This C. That D. It6. _ matter much who will go to the film. A. There is no B. It is
17、 no C. It doesnt D. That doesnt7. Go and get your coat. Its _ you left it. A. there B. where C. there where D. where there8. As time went on, I found my hometown wasnt _ it had been like. A. how B. that C. which D. what9. Energy is _ make things work. A. that B. what C. which D. something10. The bad
18、 news _ her mother had died frightened her. A. that B. which C. if D. when11. Our suggestion was made _ shops remain open till 10 oclock. A. what B. that C. which D. when12. No one can be sure _ in a million years. A. what man will look like B. what will man look like C. man will look like what D. w
19、hat look will man like13. Its generally unwise to give a child _ he or she wants. A. however B. whatever C. whichever D. what ever14. -Do you remember _ he came? -Yes, I do. He came here by car. A. how B. when C. that D. if15. I remember _ this used to be a quiet village. A. when B. how C. where D.
20、what16. _ leaves the classroom last should turn off the lights. A. No matter who B. Who ever C. She D. Whoever17. The boss made a promise _ a rise in pay. A. the workers got B. the workers will get C. that the workers would get D. when would the workers get18. The reason for his being late is _ he d
21、idnt catch the early bus. A. because B. why C. that D. because of19. It is not yet known _ we shall take part in the sports meeting. A. that B. whether or not C. if or not D. whether or20. I know nothing about her except _ you told me. A. what B. that C. how D. where21. _ is the most useful inventio
22、n? A. Do you think which of these B. Which of these do you think C. Which of these you think D. You think which of these22. _ in the newspaper that the Japanese minister will arrive next Monday. A. It says B. It is said C. It has said D. He is said23. The possibility_ the majority of the labour forc
23、e will work at home is often discussed. A. which B. as C. that D. what24. _ you go or stay at home wont make any differences. A. If B. When C. That D. Whether25. He doesnt know _ is _ he was born. A. that ; where B. that ; what C. where ; that D. what ; where26. - -It was 3 oclock _ we arrived at the village. - -Oh, it was also at 3 oclock _ we arrived at the village. A. when ; when B. when ; that C. that ; that D. that ; when27. Lei Feng was always thinking of _ he could help others. A. that B. how C. when D. which答案：15BABAD 610CBDBA 1115BABAA 1620DCCBA 2125BBCDA 2627BB