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人教新课标必修三Unit4语法学案语法知识----名词性从句III1/2学习目标：语法知识----名词性从句III学习重点：主语从句主语从句是在复合句中充当主语的从句，引导主语从句的词有连词that,whether；连接代词who,what,which；连接副词when,where,how,why等。主语从句做主语谓语动词一般用单数。Thathewillsucceediscertain.Whetherhewillgothereisnotknown.Whathesaidisnottrue.Whenthemeetingwillbeheldhasnotbeendecidedyet.为了避免主语显得过长，可以用it作为句子的主语，把主语从句移到句子的末尾。ItissaidthatPresidentJiangwillvisitourschoolnextweek.Ithasn'tbeendecidedwhenthenewrestaurantwillopen.Itishardtounderstandwhyhefailedinthisexamination.Itisnotclearhowgoldwasfoundthere.主语从句中需注意的问题：1.It作形式主语和it引导强调句的比较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。而it引导的强调句则是对句子某一部分进行强调，无论强调的是什么成分，都可用连词that。被强调部分指人时也可用who/whom。Itwasinthemorning_____themurdertookplace.Itwasat7______Igothome.ItisJohn____brokethewindowItisapity______youdidn’tgotoseethefilm.Itisthehouse_____Ilive.Itisthehouse_____Ivisitedtenyearsago.2.用it作形式主语的常用结构(1)Itis＋名词＋从句Itisanhonorthat...Itisapitythat...(2)Itis＋形容词＋从句Itisimportantthat…Itisstrangethat…(3)Itis＋不及物动词＋从句Itseemsthat…________Ithappenedthat…_________(4)It＋过去分词＋从句Itisreportedthat…Itissaidthat…Itisannouncedthat3.what与that在引导主语从句时的区别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。Whatyousaidyesterdayisright.Thatyousaidsoyesterdayisright.人教新课标必修三Unit4语法学案语法知识----名词性从句III2/2______hefailedintheexamdisappointedhisparents._______disappointedhisparentsisthathefailedintheexam.试试身手吧：1．______theyaremostinterestedinishowtheycanproducemoreandbettercars.A.ThatB.WhatC.WhateverD.Which2．______we’llgocampingtomorrowdependsontheweather.A.IfB.WhetherC.ThatD.Where3.________makesmistakes，wemustcorrectthem.A.WhatB.ThatC.WhoeverD.Whatever4.______surprisedmemostwasthatsuchalittleboyofsevencouldplaytheviolinsowell..A.ThatB.WhatC.WhichD.When5.________wegoswimmingeveryday________usalotofgood.A.If…doB.That…doC.If…doesD.That…does6.________theboydidn'ttakemedicinemadehismotherangry.A.ThatB.WhatC.HowD.Which7____wecan'thaveseemsbetterthanwhatwehave.A.WhatB.WhoC.ThatD.whose8.____youdon'tlikehimisnoneofmybusiness.A.WhatB.WhoC.ThatD.Whether9.____we'llgocampingtomorrowdependsontheweather.A.If.B.WhetherC.ThatD.Where10._______isgoingtodothejobwillbedecidedby(由……决定）theCEO.A.ThatB.WhyC.HowD.Who11._______we'llfinishtranslatingthebookdependsonthetime.A.WhenB.WhyC.WhatD.That12._______teamwillwinthematchisnoneofmybusiness.A.WhichB.ThatC.IfD.How13.(北京2006)---Couldyoudomeafavor?---Itdependson___itis.A.whichB.whicheverC.whatD.whatever答案：BBCBDAACBDAAC