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高中英语名词性从句考点归纳一、考点综述名词性从句在句子中起名词的作用,包括主语从句、宾语从句、表语从句和同位语从句,分别在句中充当主语、宾语、表语和同位语。二、分类详解1.that引导的名词性从句that在名词性从句中不作任何成分,所引导的名词性从句经常被it替代,自己则“跑”到了句末。【真题回放】(1)Itisobvioustothestudentstheyshouldgetwellpreparedfortheirfuture.(2009天津)A.asB.whichC.whetherD.that析:D。句意:很明显,对于这些学生而言,他们应该为未来做好准备。it为形式主语,真正的主语是后面的that引导的主语从句。(2)Withhisworkcompleted,thebusinessmansteppedbacktohisseat,feelingpleasedhewasamanofaction.(2006湖南)A.whichB.thatC.whatD.whether析:B。that引导宾语从句,在从句中不作任何成分。(3)Thetraditionalviewiswesleepbecauseourbrainis“programmed”tomakeusdoso.(2007上海)A.whenB.whyC.whetherD.that析:D。that引导表语从句,句意:传统的观念认为我们之所以睡觉是因为大脑中设计好的程序让我们这样去做。(4)Thefacthasworriedmanyscientiststheearthisbecomingwarmerandwarmertheseyears.(2009江西)A.whatB.whichC.thatD.though析:C。fact,idea,news,hope,belief,doubt,thought,possibility,request等词后经常会带有that引导的同位语从句,以补充说明其内容。引导词that在从句中不作任何成分,这也是与that引导的定语从句的区别。2.what引导的名词性从句【真题回放】(1)Itisnoneofyourbusinessotherpeoplethinkaboutyou.Believeyourself.(2007福建)A.howB.whatC.whichD.when析:B。本句中it作形式主语,what引导的从句为真正的主语。(2)isknowntousallisthatthe2008OlympicGameswilltakeplaceinBeijing.(2008福建)A.ItB.WhatC.AsD.Which析:B。句意:众所周知,2008年奥运会将在北京举行。what引导主语从句。(3)Whenaskedtheyneededmost,thekidssaidtheywantedtofeelimportantandloved.(2008湖南)A.whatB.whyC.whomD.which析:A。what引导宾语从句,作asked的宾语,what在从句中作needed的宾语。另外,when和asked之间省略了theywere。(4)Theseasideheredrawsalotoftouristseverysummer.Warmsunshineandsoftsandsmakeitis.(2007天津)A.whatB.whichC.howD.where析:A。what引导宾语从句,作make的宾语。how作为连接副词也可以引导从句,但它的意思是“如何,怎样”,强调方式,如:Howitwasdonewasamystery。3.其它引导词引导的名词性从句【真题回放】(1)Itisnotimmediatelyclearthefinancialcrisiswillsoonbeover.(2009上海)A.sinceB.whatC.whenD.whether析:D。it作为形式主语代替whether引导的主语从句。句意:经济危机是否很快会结束还不是马上就能明了。(2)AgoodfriendofminefromIwasbornshowedupatmyhomerightbeforeIleftforBeijing.(2009安徽)A.howB.whomC.whenD.which析:C。所填词引导宾语从句,作介词from的宾语;when的意思是“……时候”。句意:一个从我出生起就和我结识的朋友,在我出发去北京前出现在我家里。(3)Atfirsthehatedthenewjobbutdecidedtogivehimselfafewmonthstoseeitgotanybetter.(2009北京)A.whenB.howC.whyD.if析:D。if引导的从句作s