主语从句课件.ppt

,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,谓语之前,谓语之后,系动词之后,名词之后,Unit4,主语从句,SubjectClause,RevisionFindthesubjectsinthefollowingsentences.,1.Atreehasfallenacrosstheroad.2.Youareastudent.3.Tofindyourwaycanbeaproblem.4.Smokingisharmfultoyou.5.Whatshesaidisnotyetknown.6.Thatweshallbelateiscertain.7.Itscertainthatweshallbelate.,主语从句,在句中充当主语的从句叫做主语从句。,1.Thathewillcomeiscertain.2.Whethertheplanwillbecarriedoutisstillunknown.3.Whattheschoolneedsmucharebooks.4.Whichsidewillwinisnotclear.5.Whyhediditremainsamystery.6.Whentheywillstartisnotknownyet.7.Howhebecameagreatscientistisknowntousall.8.Whowilltakepartinthemeetinghasnotbeendecided.9.Whoeverbreaksthelawwillbepunished.10.Wheresheisfromisunknown.,Findthesubjectclausesinthefollowingsentences.,名词性从句的引导词：1.that（无意义，不可省，不充当任何成分）2.whether/(if)（均表示“是否”表明从句内容的不确定性,不可省）3.连接代词：what,whatever,who,whoever,whom,whomever,whose,which,whichever4.连接副词：when,where,how,why,whenever,wherever,however,依据“缺什么补什么”原则确定正确的连词。所谓“缺什么补什么”是指句型结构与连词之间的关系。如果句子中缺主语，指人用who，指物用what；如缺宾语，指人用whom，指物用what；如缺时间状语用when；地点状语用where；原因状语用why；方式状语用how；定语用what或which；什么都不缺用that。Wherehewillgoisunknown.Whatyousaidyesterdayisright.ThatheknowsJapaneseisknowntoall.Whetherheiscomingdoesntmattermuch.,缺地点状语,缺宾语,什么都不缺，句子完整,意思为“是否”，起连接作用,Completethesentencesusingwhat,whether,where,when，who,why,howorthat.,1.(_isneededforsuccess)isyourhardwork.,3.(_thetreeswillbeplanted)hasnotbeendecided.,2.(_wewillhaveameeting)isanimportantquestion.,4.(_canjoininthesportsmeeting)isdecidedbytheteacher.,5.(_itwillrainornot)isnotclear.,7.(_hemadeaspeechatthemeeting)wastrue.,What,When/Where/Whether,Where/Whether/When,Who,Whether,That,6.(_theearthisbecomingwarm)isagoodtopicforresearch.,Why,单一主语从句作主语时，谓语动词用形式。,Conclusion:,单数,注意：,Whatyouleftareonlyseveraloldbooks.2.WhatIneedismoretime.,2.主语从句的“that”不能省。,3.“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。,主语从句需注意的问题,1.主语从句中用陈述语序,1._mattersmostinlearningEnglishisenoughpractice.(2007全国卷)A.WhatB.WhyC.WhereD.Which,高考链接,2._wellgocampingtomorrowdependsontheweather.(NMET1996)A.IfB.WhetherC.ThatD.Where,3._hehasbecomearichmanisknowntoallinourtown.（高考真题）A.BecauseB.ThatC./D.What,4._wantstostayinahotelhastopaytheirownway.（高考真题）AnyoneB.TheoneC.WhoeverD.Who,5_hesaidatthemeetingastonishedeverybodypresent.高考真题A.WhatB.ThatC.ThefactD.Thematter,6._fashiondiffersfromcountrytocountrymayreflecttheculturaldifferencesfromoneaspect.(上海2002春)A.WhatB.ThatC.ThisD.Which,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.-Itscertainthatweshallbelate.1.Thattheearthisroundisknowntoall.-2.Thatyoumissedthechanceisapity.-,Itisapitythatyoumissedthechance.,Itsknowntoallthattheearthisround.,It,It+be+形容词that从句,Itisnecessarythat有必要Itisimportantthat.重要的是Itisobviousthat很明显,It+be+-ed分词that从句,Itisbelievedthat人们相信Itisknowntous/allthat.众所周知Ithasbeendecidedthat已经决定,用it形式主语的that从句有以下四种不同的搭配：,It+be+名词that从句,Itiscommonknowledgethat是常识Itisasurprisethat.令人惊奇的是Itisafactthat事实是,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.)thatItissuggested(requested,proposed,desired,etc.)that,shoulddo,shoulddo,Choosethebestanswer.,2.Itworriedherabit_herhairwasturninggray.whetherB.thatwhatD.when,1._isafactthatEnglishisacceptedasaninternationallanguage.A.ThereB.WhatC.ThatD.It,Exercise,4.Itsuddenlyoccurredtohim_hehadlefthiskeysintheoffice.A.whichB.thatC.whereD.whether,3.Ithasbeenproved_eatingvegetableinchildhoodhelpstoprotectyouagainstseriousillnessesinlaterlife.A.ifB.becauseC.whenD.that,6._isreportedthattalksbetweentwocountriesaremakingprogress.A.AsB.WhatC.ThatD.It,5._isreportedinthenewspaper,talksbetweentwocountriesaremakingprogress.A.AsB.WhatC.ThatD.It,8._isgoodnewsthateveryonegotbacksafely.A.AsB.ItC.WhatD.Which,7.Itwasrequestedthateveryone_aspeechatthemeeting.A.makesB.madeC.havemadeD.make,TranslatethesentencesintoEnglish.,1.他是不是要来，这是个问题。2.很显然，他会赢得这次比赛。,Whetherhewillcomeornot,isaquestion.,Itsobviousthathewillwinthegame.,3.她要去伦敦让我们很惊讶。4.我不能明白的是他为什么改变主意了。,ThatshewillgotoLondon,us,hehaschangedhismind.,Wha