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

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1、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

2、.Thatweshallbelateiscertain.7.It’scertainthatweshallbelate.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.6Whentheywi

3、llstartisnotknownyet.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

4、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。Wherehewillgoi

5、sunknown.Whatyousaidyesterdayisright.ThatheknowsJapaneseisknowntoall.Whetherheiscomingdoesn’tmattermuch.Completethesentencesusingwhat,whether,where,when，who,why,howorthat.1.(_____isneededforsuccess)isyourhardwork.3.(_____wewillgotomorrow)hasn’tbeendecidedyet.

6、2.(______theywillarrive)hasbeentoldtotheteacher.4.(___canjoininthesportmeet)isdecidedbytheteacher.5.(________itwillrainornot)isnotclear.7.(______theearthisasolidball)isknowntousall.WhatWhen/HowWhere/whetherWhoWhetherThat6.(____theearthisbecomingwarm)isagoodto

7、picforresearch.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.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.主语从句需注意的问

8、题2.主语从句中用陈述语序1._____youdon’tlikehimisnoneofmybusiness.2._____hesaidatthemeetingastonishedeverybodypresent3.________the2000OlympicGameswillbeheldinBeijingisnotknownyet.4.________we’llgocam