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1、,Predicative Clauses 表语从句,表语从句的定义：表语从句在复合句中作主句的表语。表语从句和主语指同一内容，它对主语进行解释、说明，使主语的内容具体化。结构是“主语+系动词+表语从句”。可以接表语从句的系动词有be,look,remain,seem等。,连接词：连接代词：连接副词：,that/whether/as if/as though,who/whom/whose/which/what,when/where/why/how/because,1.The question is _we can rely on him.2.Thats _we were in need of m
2、oney at that time.3.He looked _he was going to cry.4.Thats _I was late.,whether,because,as if,why,引导词的用法（一）,that在表语从句中,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 没有意义,whether在表语从句中表,但不充当句子的成分。if 引导表语从句.如:1.What the doctor
3、 really doubts is whether my mother will recover from the serious disease soon.2.The question is whether it is worth doing.,“是否”,不能,引导词的用法（二）,what 在表语从句中充当_ 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 had been discussed a
4、t the meeting.,主语、宾语或表语,什么，什么样子，或所的（人或事）,引导词的用法（三）,who 在表语从句中充当_表示_.The problem is who could do the work2.My trouble is who(whom)I can turn to.,主语、宾语或表语,谁,引导词的用法（四）,which 在引导表语从句时,常充当_ 表示。如：I read about it in some book or another,but what I dont know is which(book)it is.,定语,表语,其中哪一个,引导词的用法（五）,由as if
5、,as though引导表语从句，表示好像。句子中的系动词常用look,appear,seem等。It looks as if it was going to rain.2.The young man with long hair looks as if he were a girl.,引导词的用法（六）,当主句的主语为reason,或者是由why引导的从句时,与它们相关的表语从句用_,而不能由_ 引导;because 引导表语从句时只能用于_句型中.1.The reason why I was late was that I missed the train.2.I was late.It/
6、That/This was because I missed the train.,that来引导,because,It/That/This is/was because,引导词的用法（七）,当表语从句中主语、宾语、表语具备，但是还是要表示疑问含义，可以判断句子中缺少状语，常常用相应的特殊疑问词引导，有why,when,where,how等This is _he did it.That is_ the brothers wanted to make a bet.Thats _weve given you the letter.,引导词的用法（八）,how,why,why,表语从句引导词注意事项
7、,1.that引导表语从句时不能省.2.if不能引导表语从句.3.除that外的所有引导词都有自己的意义。4.除that,whether外的所有引导词都须在从句中充当相应的成分 5.主语为advice、suggestion、order、command、reguest等时，表语从句为虚拟语气,The suggestion he gave me was that every means _to save the crops before the storm came.(try)他给的建议是，要在暴风雨来临之前尝试每一种方法来拯救这些庄稼。What I want to know is _(take)
8、我想知道的是要走那一条路。,should be tried,which road to take,1.Thats _ the Party called on us to do.A.why B.what C.how D.that 2.The reason is _ he is unable to operate the machine.A.because B.why C.that D.Whether3.That is _ they separated.A.that B.what C.which D.where 4.Jane is no longer _ she was four years ago.A.what B.which C.that D.when,名词主语+be+that引起的表语从句,主语名词常常是表示事实，真理的名词，如：fact,truth 表示看法，观点、问题、麻烦的名词，如：idea,opinion,belief,view,news,advice,feeling,suggestion,plan,trouble,question,problem,1.The fact is that our team has won the game.2.The truth is that she was the very person we are looking for.,
