必修三主语从句.ppt

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1、SubjectClauseRevisionFindthesubjectsinthefollowingsentences.1.Atreehasfallenacrosstheroad.2.Youareastudent.3.Tofindyourwaycanbeaproblem.4.Smokingisharmfultoyou.5.Whatshesaidisnotyetknown.6.Thatweshallbelateiscertain.主语从句在句中充当主语的从句叫做主语从句。1Thathewillcomeiscertain.2

2、Whetheritwillpleasethemisnoteasytosay.3Whatseemseasytosomepeopleseemsdifficulttoothers.4Whichsidewillwinisnotclear.5Whyhediditremainsamystery.6Whentheywillstartisnotknownyet.7Howhebecameagreatscientistisknowntousall.8Whowilltakepartinthemeetinghasnotbeendecided.9

3、Whoeverbreaksthelawwillbepunished.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

4、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whose或which；什么都不缺用that。Completethesentencesusingwhat,whether,where,when，who,why,howorthat.1.(_____isneededforsuccess)isyourhardwork.3.(_____wewillgotomorr

5、ow)hasn’tbeendecidedyet.2.(______theywillarrive)hasbeentoldtotheteacher.4.(___canjoininthesportmeet)isdecidedbytheteacher.5.(________itwillrainornot)isnotclear.7.(______theearthisasolidball)isknowntousall.WhatWhen/HowWhere/whetherWhoWhetherThat6.(____theearthisbe

6、comingwarm)isagoodtopicforresearch.Why主语从句作主语时，谓语动词一般用单数形式。Conclusion:主语从句的规律例1.Whenwillhecomeisnotknown.规律一、主语从句一律用陈述语序，即主语在前，谓语在后。正：Whenhewillcomeisnotknown.例2.Hewillnotcometothemeetingthiseveningistrue.正：Thathewillnotcometothemeetingthiseveningistrue.规律二、连词tha

7、t在从句中无实际意义，但不能省略。例3.Ifthemeetingwillbeputoffhasnotbeendecidedyet.正：Whetherthemeetingwillbeputoffhasnotbeendecidedyet.规律三、whether可以引导主语从句，放在句首，但if不能例4.Whenhewillcomeareapuzzle.正：Whenhewillcomeisapuzzle.规律四、主语从句的谓语动词多用单数第三人称形式。Whenthemeetingwillbegin_____(have)notb

8、eendecidedyet.hasWhentheywillstartandwheretheywillgo_____(be)stillunknown.Whenandwherethemeetingwillbegin_____(have)notbeendecidedyet.arehas例5.1.Whatheneeds___