人教新课标必修三+Unit+4+Astronomy-Grammar[主语从句教学课件].ppt

SubjectClause,学习目标：1.掌握主语从句的基本概念；2.能从句中找出主语从句，并翻译句子；3.能够概括出主语从句的引导词；4.学会根据句意选择恰当的引导词。,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。,1Thathewillcomeiscertain.2Whetheritwillpleasethemisnoteasytosay.3Whatseemseasytosomepeopleseemsdifficulttoothers.4Whichsidewillwinisnotclear.5Whyhediditremainsamystery.6Whentheywillstartisnotknownyet.7Howhebecameagreatscientistisknowntousall.8Whowilltakepartinthemeetinghasnotbeendecided.9Whoeverbreaksthelawwillbepunished.10Wheresheisfromisunknown.,Findthesubjectclausesinthefollowingsentences,andtranslatethem.,思考：主语从句有哪些引导词，这些引导词如何选用？,主语从句的引导词：连词that,whether连接代词who(ever),whom(ever),which(ever),what(ever)连接副词where,when,why,how,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.,Completethesentencesusingwhat,whether,where,when，who,why,howorthat.,1.(_isneededforsuccess)isyourhardwork.,3.(_wewillgotomorrow)hasntbeendecidedyet.,2.(_theywillarrive)hasbeentoldtotheteacher.,4.(_canjoininthesportmeet)isdecidedbytheteacher.,5.(_itwillrainornot)isnotclear.,7.(_theearthisasolidball)isknowntousall.,What,When/How,Where/whether,Who,Whether,That,6.(_theearthisbecomingwarm)isagoodtopicforresearch.,Why,主语从句作主语时，谓语动词一般用单数形式。,Conclusion:,注意：,Whatyouleftareonlyseveraloldbooks.Whatyousaidisofgreatimportance.Whetherhellcomehereisnotclear.,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.主语从句需注意的问题,2.主语从句中用陈述语序,1._youdontlikehimisnoneofmybusiness.2._hesaidatthemeetingastonishedeverybodypresent3._the2000OlympicGameswillbeheldinBeijingisnotknownyet.4._wellgocampingtomorrowdependsontheweather.5._leavestheroomlastoughttoturnoffthelights.,That,What,Whether,Whether,Whoever,选择恰当的连接词,Makesentences,Itscertainthatwewillbelate.,Thatwellbelateiscertain.,Wedontknowwhetherheiscomingornot,Whetherheiscomingisnotknown.,Wedontknowwhathewantstotellus.,Whathewantstotellusisnotknown.,Whenyouwillcomebackdoesntmatter.,Itdoesntmatterwhenyouwillcomeback.,_hemadeanimportantspeechatthemeetingwastrue.A.ThatB.WhyC.WhatD.How,2._wellgocampingtomorrowdependsontheweather.AIfBWhetherCThatDWhere,Choosethebestchoice,3.Itworriedherabit_herhairwasturninggray.whetherB.thatC.whatD.when4.WhatIsayandthink_noneofyourbusiness.A.isB.areC.hasDhave,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+b