名词性从句名词性从句（主语、表语、宾语、同位语从句）（一）主语从句1．定义：用作主语的从句叫做主语从句。
2．构成：关联词+简单句G. 当主语从句出现在感叹句中时，要以it作形式主语，而把主语从句后置。
如：How strange it is that the children are so quiet! 孩子们这么安静真奇怪！2．注意连接代词whoever, whatever, whichever等引导主语从句的含义Whoever comes will be welcome. (whoever=the person who) 来的人将受到欢迎。
（二）表语从句精心整理1．定义：用作表语的从句叫做表语从句。
2．构成：关联词+简单句3．引导表语从句的关联词的种类：(1) 从属连词that。
如：The trouble is that I have lost his address. 麻烦是我把他的地址丢了。
(2) 从属连词whether, as, as if。
如：He looked just as he had looked ten years before. 他看起来还与十年前一样。
注：从属连词if一般不用来引导表语从句，但as if却可引导表语从句(3)如：1．2．should+3．that引导●“…….+ is /remain/look/seem/appear + that表语从句”，表示“.….是表语从句”例：What’s troubling me is that I don’t have much experience in this field.●主语是reason时，表语从句必须由that引出例：The reason I don’t go there was that I got a new job.4．as if/as through引导●“……look/seem/appear/remain（系动词）+ as if/as through 表语从句”，表示“.….好像表语从句”精心整理例：It looks as if it is going to rain.（三）宾语从句1．定义：用作宾语的从句叫宾语从句。
2．构成：关联词+简单句3．引导宾语从句的关联词有三类：(1) 从属连词that。
如：He told us that he felt ill. 他对我们说他感到不舒服。
注：that在引导宾语从句时也并不是任何情况下都可以省略。
在以下情况下，that不能省略。
3) 4．主I don’t care (for) who marries him. 我不管谁跟他结婚。
解释：1．如果宾语从句后还有宾语补足语，则用it作形式宾语，而将宾语从句后置。
如：We thought it strange that Xiao Wang did not come yesterday.我们认为小王昨天没来是奇怪的。
He has made it clear that he will not give in.他已表明他不会屈服。
2．作介词的宾语：连词that引导的名词性从句很少作介词的宾语，只用在except, but, in后。
其他一些介精心整理词的宾语从句如果由连词that引导，则需用it先行一步，作形式宾语。
如：He is a good student except that he is careless.他是一个好学生，只是有点粗心。
You may rely on it that I shall help you. 你可以指望我会帮助你的。
介词宾语不可以用which来引导，而要用what来引导。
如：Are you sorry for what you've done?你为你所做的一切感到内疚吗？3．某些形容词或过去分词后常接宾语从句，这类形容词或过去分词有sure, glad, certain, pleased, happy,if和5例：We discussed that we should put off the meeting.●若that引导的宾语从句还有补足语的话，需引入形式并与it，即“动词+ it + 宾语补足语+ that宾语从句”例：Clinton wants to make it clear to the public that the government will investigate the event seriously.（四）同位语从句1．定义：用作同位语的从句叫做同位语从句。
2．用法：同位语从句的先行词多为fact, news, idea, thought, question, reply, report, remark等，关联词多精心整理用从属连词that。
如：They were all very much worried over the fact that you were sick.对你生病这件事，他们都很焦虑。
注：同位语从句偶尔由从属连词whether引导。
如：I have no idea whether he’ll come or not. 我不知道他是否来。
连接代词who, which, what和连接副词where, when, why, how亦可引导同位语从句。
The question who should do the work requires consideration.谁该干这项工作，这个问题需要考虑。
that)2动词原形例：Evidence came up that specific speech sounds are recognized by babies as young as 6 months old.精心整理A. did the quarrel cameabout B .the quarrel had精心整理come aboutC. had the quarrel comeschool graduates will be admitted into universities.精心整理A. whileB. thatC. whenD.asC.C. which place has he goneD. where has he gone精心整理7. The doctor did a lot to reduce the patient’s fearC.B.that; should leaveC. /; must leaveD.精心整理when; should leave 9. ___is no possibilityresearch.A. thatB. whichC.精心整理whether D. if11. Is _____he said really true?_____her hair was turninggray.精心整理A. whileB. ifC. thatD. forC.A. WhatB. ThatC.Whether D. If精心整理16. ____you don’t like him isnone of my business.18. ____appeared to me that he enjoyed the food very精心整理much.A. WhatB. ItC.How D. WhereKeys: 1—5 ABABC 6—10精心整理AABAC 11—15 BBCAB16—20 BCBAAD That the students2、（）______ caused the精心整理accident is still a completelymystery.C whetherD why4、（）This is ______ the精心整理river was polluted.A whatB how6、（）There is a generalfeeling in them ______ they精心整理are dissatisfied with the game result the Chinese footballB what the meaning of thissentence精心整理C what this sentence meansD what is the meaning of thisA an honour that she was ateacher精心整理B that she was a teacher anhonourexcept that C except for D except when精心整理巩固练习1、（）______ really2have made recently.A No matter who ; how精心整理B Whoever ; whatC Who ; what4looked the door before he left.A That occurred to him精心整理B He occurred thatC To him it occurredplaceD When a meeting will take精心整理place6、（）______ is necessary7A whetherB thatC ifD what精心整理8、（）______ we shallmake the trip depends on9______ we can get enoughmoney.精心整理A If ; whetherB Whether ; whetherC the fact was thatD it was the fact精心整理11、（）I had neither araincoat nor anright person to deal with thesituation.精心整理A whyB howC if Dtheirs team had ______ the game , all the students were精心整理excited.A which ; won16、（）One of the men held the view ______ the book精心整理said was right.A what thatC which we haveD about to have精心整理18、（）There is a new problem involved in theconcentrate ______ theteacher says in class.精心整理A on whichB at thatC she will buyD she would buy精心整理21、（）The students are allinterested in ______ Misswhich D of what精心整理key1~5 DACBA 6~10 ACCDD精心整理。