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1、名词性从句名词性从句- 表语从句表语从句 名词性从句名词性从句 noun clause 主语从句主语从句subject clause 宾语从句宾语从句object clause 表语从句表语从句predicative clause 同位语从句同位语从句appositive clause1.表语从句的定义表语从句的定义The question is who will do it.复合句复合句The question is difficult. 简单句简单句（ 表表 ）表语从句表语从句（ 表表 ）2. 表语从句的构成表语从句的构成This is why he did it.主语主语 系动词系动词
2、表语从句表语从句 结构是结构是“主语主语+系动词系动词+表语从表语从句句”。系动词：表示状态的连系动词有系动词：表示状态的连系动词有: be ; appear ; seem ; keep ; remain ; continue ; stay ; prove 表示感觉的连系动词有表示感觉的连系动词有: look ; feel ; smell ; sound ; taste 等等表示转变的连系动词有表示转变的连系动词有:become ; fall ; get ; go ; grow ; turn 等等连接词：连接词：that / whether /as if /as though连接代词：连接代词
3、：who / whom / whose / which / what 连接副词：连接副词：when / where / why / how / because 引导词的用法（一）引导词的用法（一） that在表语从句中在表语从句中 ,又又 。The fact is that he hasnt yet recover from illness. The reason why he has to go is that his mother is ill in bed. 既不充当成分也不能省略 whether在表语从句中表在表语从句中表 ,但不充当句但不充当句子的成分。子的成分。if 引导表语从句引
4、导表语从句.如如: 1. The question is whether it is worth doing.“是否是否”不能不能引导词的用法（二）引导词的用法（二）what 在表语从句中充当在表语从句中充当_ 表示表示_.1. The question is what caused the accident. 2. That mountain is no longer what it used to be .3. What he told you was what we had discussed at the meeting.主语、宾语或表语什么，什么样子，或所什么，什么样子，或所的（人或
5、事）的（人或事）引导词的用法（三）引导词的用法（三）who 在表语从句中充当在表语从句中充当_表示表示_ _.1. The problem is who could do the work.2. My trouble is who (whom) I can turn to.主语、宾语或表语主语、宾语或表语谁谁引导词的用法（四）引导词的用法（四） which 在引导表语从句时在引导表语从句时,常充当常充当_ 表示表示 。 如：如： I read about it in some book or another, but what I dont know is which (book) it is
6、. 定语定语, ,表语表语其中哪一个其中哪一个引导词的用法（五）引导词的用法（五）由由as if ,as thoughas if ,as though引导表语从句，表示引导表语从句，表示好好像像。句子中的系动词常用。句子中的系动词常用look, appear, seem等。等。1.It looks as if it is going to rain.引导词的用法（六）引导词的用法（六） 1.The reason why I was late was that I missed the train.引导词的用法（七）引导词的用法（七） 当表语从句句子完整，常常用当表语从句句子完整，常常用why,
7、 when, why, when, where, howwhere, how等引导等引导This is how he did it.That is why the brothers wanted to make a bet.Thats why weve given you the letter.引导词的用法（八）引导词的用法（八）表语从句引导词注意事项表语从句引导词注意事项1.1.thatthat引导表语从句时不能省引导表语从句时不能省. .2. 2. ifif不能引导表语从句不能引导表语从句. .3.3.除除thatthat外的所有引导词都有自己的意义。外的所有引导词都有自己的意义。 1.
8、Im afraid hes more of a talker than a doer, which is _ he never finishes anything. A. that B. when C. where D. why验收练习题2. - I prefer shutting myself in and listening to music all day on Sundays.- Thats _ I dont agree. You should have a more active life.A. where B. how C. when D. what3. - Hi, Peter.
9、You seem to have gained a lot of weight.- Well, good food, not enough exercise. That is _ I got fat. A. how B. when C. what D. whether验收练习题4. Id like to start my own business- thats _ Id do if I had the money. A. why B. when C. which D. what5. When the Internet was created in 1969, only a few people
10、 knew about it. Thats _ it came into existence as a secret US government project. A. when B. why C. how D. because验收练习题6. The last time we had great fun was _ we were visiting the Water Park. A. where B. how C. when D. why7. Thats _ the Party called on us to do. A. why B. what C. how D. that 验收练习题8. The reason is _ he is unable to operate the machine. A. because B. why C. that D. whether9. That is _ they separated. A. that B. what C. which D. where 10. Jane is no longer _ she was four years ago. A. what B. which C. that D. when