主语从句ppt.ppt

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1、GrammarIwonder,Mr.Adams,ifyou’dmindusaskingafewquestions?Ican’tsaythatIhaveanyplans.ThefactisthatIearnedmypassagebyworkingasanunpaidhandreviewGrammarAtreehasfallenacrosstheroad.Youareastudent.Tofindyourwaycanbeaproblem.Smokingisbadforyou.主语从句在句中充当主语的从句叫做主语从句。1.连接词：1）从属连词：that，whether等.t

2、hat引导主语从句只起引导作用，本身无实际意义，在主语从句中不充当任何成分，但不能省略。Thatshelefthimcuthimtotheheart.Thathewillcomeiscertain.2)连接代词who，what，which,whatever,whichever,whoeverWhatseemseasytosomepeopleseemsdifficulttoothers.Whichsidewillwinisnotclear.由whether及其他连词引导的主语从句放在句首，句后都可。Whetheritwillpleasethemisnoteasytosa

3、y.3)连接副词when，where，how，why等Whyhediditremainsamystery.Whentheywillstartisnotknownyet.Howhebecameagreatscientistisknowntousall.主语从句后置!为了避免主语冗长,句子头重脚轻,经常用it作形式主语,主语从句放在后面作真正的主语.例:Thatweshallbelateiscertain.--It’scertainthatweshallbelate.1.Thattheearthisroundisknowntoall.--2.Thatyoumissedth

4、echanceisapity.--Itisapitythatyoumissedthechance.It’sknowntoallthattheearthisround.注意：Whatyouleftareonlyseveraloldbooks.Whatyousaidisofgreatimportance.Whether he’ll come hereisnot clear.1.“if”不能引导主语从句，应有“whether”引导。3.主语从句的“that”一般不能省。4.“what”引导主语从句时，谓语动词：1）常与其后的名词作表语一致2）根据句子的语境而定。4.主语从句

5、需注意的问题2.主语从句中用陈述语序MakesentencesIt’scertain.we’llbelate.Ishecomingornot？Wedon’tknowWhatdoeshewanttotellus?Wedon’tknowWhenwillyoucomeback?Itdoesn’tmatter.It’scertainthatwewillbelate.Thatwe’llbelateiscertain.Wedon’tknowwhetherheiscomingornotWhetherheiscomingisnotknown.Wedon’tknowwhathewant

6、stotellus.Whathewantstotellusisnotknown.Whenyouwillcomebackdoesn’tmatter.Itdoesn’tmatterwhenyouwillcomeback.1.Whereshallwespendtheholidayisn’tdecided.2.Youhavemadeamistakeisafact.3.Thatiscertainthatwecanwin.4.Nomatterwholeavestheroomlastoughttoturnoffthelights.5.Ifthepolicemenwillcomeis

7、notcertain.weshallThatyouhaveItisWhoeverWhether改错练习___hemadeanimportantspeechatthemeetingwastrue.A.ThatB.WhyC.WhatD.How2.___we’llgocampingtomorrowdependsontheweather.AIfBWhetherCThatDWhereChoosethebestchoice3.Itworriedherabit___herhairwasturninggray.whetherB.thatC.whatD.when4.W