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1、学习必备欢迎下载高中英语语法复习学案（名词性从句）名词性从句相当于名词，可分别作主句的主语、表语、宾语和同位语。因此，名词性从句厅分为主语从句、表语从句、宾语从句和同位从句。（一）引导名词性从句的连接词1、连接代词： who, whose, whom, what, which 。有词义，在从句中担任成分，如主语、表语、宾语、或定语等。2、连接副词： when, where, why, how 。有词义，在从句中担任成分，作状语。3、连接词： that, whether, if, as if 。that 无词义，在从句中不担任成分，有时可省略；if (whether), as if虽有词义，但在
2、从句中不担任成分。注意：连接代词与连接副词在句中不再是疑问句，因而从句中谓语不用疑问式。连接代词与连接副词在从句充当句子成分，连接词whether 和 if（是否），as if（好象）在从句中不充当句子成分，只起连接作用。根据句义，如果连接代词与连接副词，whether、if 和 as if 都用不上时，才用that 作连接词（ that 本身无任何含义） 。（二）主语从句1、主语从句在复合句作主语。e.g. Who will go is not important. 2、用 it 作形式主语，主语从句放在句末。e.g. It doesnt matter so much whether you
3、 will come or not.3、that 引导主语从句时，不能省略。e.g. That he suddenly fell ill last week made us surprised. （三）表语从句1、表语从句在复合句中作表语，位于系动词之后。e.g. The question was who could go there. 2、引导表语从句的连接词that 有时可省去。e.g. My idea is (that) we can get more comrades to help in the work. （四）宾语从句1、宾语从句在复合句中作宾语。引导宾语从句的连词that 一般
4、可省略。e.g. I hope (that) everything is all right. 2、介词之后的宾语从句，不可用which 或 if 连接，要分别用what 或 whether。e.g. I m interested in whether youve finished the work.I m interested in what youve said.3、whether 与 if 都可以引导宾语从句，常可互换。但下面情况不能互换。宾语从句是否定句时，只用if ，不用 whether。e.g. I wonder if it doesnt rain.用 if 会引起误解，就要用wh
5、ether。e.g. Please let me know whether you want to go. （此句如果把 whether 改成 if，容易当成条件句理解）宾语从句 中的 whether 与 or not 直接连用，就不能换成if ；不直接连用，可换。e.g. I dont know whether or not the report is true.I don t know whether/ if the report is true or not.介词后的宾语从句要用whether 引导。 whether 可与不定式连用。whether 也可引导主语从句、表语从句、同位语从句
6、，还可引导让步状语从句，以上均不能换成if 。但引导条件从句时，只能用if，而不能用 whether。e.g. It depends on whether we have enough time. They don t know whether to go there.Please come to see me if you have time. 精品p d f 资料 - - - 欢迎下载 - - - - - - - - - - - - - - -第 1 页，共 4 页 - - - - - - - - - - 学习必备欢迎下载（五）同位语从句同位语从句在句中作某一名词的同位语，一般位于该名词
7、（如：news, fact, idea, suggestion, promise 等）之后，说明该名词的具体内容。e.g. I have no idea when he will be back. The fact that he had not said anything surprised everybody. 练习：名词性从句一、判断下列各句哪句含有名词性从句，并指出是什么从句：1. China is no longer what it used to be. 2. The truth that the earth turn around the sun is known to all.
8、 3. It was snowing when he arrived at the station. 4. How he persuaded the man ager to change the plan is interesting to us all. 5. The news that they had won the game soon spread over the whole school. 6. The news that you told me yesterday was really disappointing. 7. That is where Lu Xun used to
9、live. 8. He spoke as if he understood what he was talking about. 9. Do you remember the teacher who taug ht us English at middle school? 10. I wonder why she refused my invitation. 二、用适当的连词填空：1. I cant decide _ dictionary I should buy. 2. Thats _ he refused my invitation.3. I am very interested in _
10、 he has improved his pronunciation in such a short time. 4. _ we need is more time. 5. The fact _ she had not said anything at the meeting surprised everybody. 6. _ and _ they will meet has not been decided yet. 7. Please tell me _ you are waiting for. 8. Is that _ you are looking for? 9. Would you
11、please tell me _ the nearest post office is? 10. I don t know _ he will agree to the plan or not. 三、选择填空：1. His success was because of _ he had been working hard. A. that B. the fact which C. the fact that D. the fact 2.Is Mary from New York City I dont know _. A. from what city does she come from B
12、. from what city she come C. what city does she come from D. what city she comes from 3._ makes mistakes must correct them. A. What B. That C. Whoever D. Whatever 4. The reason why I didnt go to Shanghai was _ a new job. A. because I got B. because of getting C. I got D. that I got 5. It worried her
13、 a bit _ her hair was turning grey. A. while B. that C. if D. for 6. Henry killed the dog. Ill ask him why _. A. did he do that B. he did that C. he did D. he has done so 7. Have you seen Henry lately My boss wants to know _. A. how he is getting along B. how is he getting along C. what he is gettin
14、g along D. what is he getting along 8. It is generally considered unwise to give a child _ he or she wants. 精品p d f 资料 - - - 欢迎下载 - - - - - - - - - - - - - - -第 2 页，共 4 页 - - - - - - - - - - 学习必备欢迎下载A. however B. whatever C. whichever D. whenever 9. He asked me _ with me. A. what is the trouble B. w
15、hat wrong was C. what was the matter D. what trouble it is 10. I am sure _ he said is true. A. that B. about that C. of that D. that what 11. When and why he came here _ yet. A. is not known B. are not known C. has not known D. have not bee 12.I wonder how much _. A. does the watch cost B. did the w
16、atch cost C. the watch costed D. the watch costs 13. Mary is _ someone might recognize her. A. afraid of B. afraid about C. afraid that D. afraid for 14._ is no reason for dismissing her. A. Because she was a few minutes late B. Owing to a few minutes late C. The fact that she was a few minutes late D. Being a few minutes late 15. They came to the conclusion _ by a computer. A. that not all things can be done B. because of not all things be done C. being not all things can be done D. because not
