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1、名词性从句名词性从句nounclause主语从句subjectclause宾语从句objectclause表语从句predicativeclause同位语从句appositiveclause辨别下列名词性从句的类别：1.Howthebookwillselldependsonitsauthor.2.JohnsaidthathewasleavingforLondononWednesday.3.Thefactisthathehasnotbeenseenrecently.4.Thefactthathehasnotbe
2、enseenrecentlydisturbseveryoneinhisoffice.5.HewilltalktousaboutwhathesawinU.S.6.ItisimpossiblethatIgoandattendthemeeting.主语从句宾语从句表语从句同位语从句宾语从句主语从句That/wh-clause+v+…主语从句S+be/link.v+that/wh-clause表语从句S+vt+that/wh-clause宾语从句S+vi+prep+wh-clause宾语从句名词从句又可分别称为主语从
3、句、宾语从句、表语从句和同位语从句。引导名词性从句的连接词可分为三类：连接词：that,whether,if连接代词：what,whatever,who,whoever,whom,whose,which.连接副词：when,where,how,why1。that只起连接主句和从句的作用，在从句中不担任任何成分，本身也没有词义，宾语从句中可省略2。不充当介宾3。引导主语从句、表语从句和同位语从句,that不可省略。4.thatwhether,if,asif,asthough（以上在从句中均不充当任何成分一．主语
4、从句主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。1.It作形式主语It作形式主语代替主语从句，主要是为了平衡句子结构，主语从句的连接词没有变化。例如：Itisapitythatyoudidn’tgotoseethefilm.Itdoesn’tinterestmewhetheryousucceedornot.1.It+be+形容词＋that从句Itisnecessary/important/obviousthat…2.It+be+-ed分词＋that从句
5、Itisbelievedthat…人们相信…Itisknowntousallthat….众所周知…Ithasbeendecidedthat……已经决定……3.It+be+名词＋that从句Itiscommonknowledgethat……是常识Itisasurprisethat….令人惊奇的是…Itisafactthat……事实是……4.It+不及物动词＋that从句Itappearsthat…似乎…Ithappensthat….碰巧…Itoccurredtomethat……我突然想起……另注意在主语从句中用
6、来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“(should)+do”，常用的句型有：Itisnecessary(important,natural,strange,etc.)that…Itissuggested(requested,proposed,desired,etc.)that…what引导主语从句时在句时在从句中充当句子成分，如主语．宾语．表语，而that则不然。例如：1)______yousaidyesterdayisright.2)______sheisstillalivei
7、sagoodthing.Itisrightwhatyousaidyesterday.Itisagoodthingthatsheisstillalive.WhatThat2.what与that在引导主语从句时的区别主语从句中的“主谓一致”：1.主语从句通常被看作一个整体,主句的谓语动词用单数形式.Thattheywillcome_______certain.2.What引导主语从句时,主句谓语动词的单复数由表语的单复数决定.Whathewants______thesebooks.Whathewants_____
8、_somewater.3.注意isareis1_________ intheregulationsthatyoushouldnottellotherpeoplethepasswordofyoure-mailaccount..(2005上海)A.WhatisrequiredB.WhatrequiresCItisrequiredD.Itrequires2.TheForeignMinistersaid,“
