主语从句讲解与练习.ppt

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1、主语从句SubjectClauses3.Tofindyourwaycanbeaproblem.2.Smokingisbadforyou.1.Youareastudent.4.“Howdoyoudo?”isagreeting.5.Whatshesaidisnotyetknown.6.Thatweshallbelateiscertain.7.Itiscertainthatweshallbelate.Subject（主语）AsentenceservedassubjectiscalledSubjectClause.划线部分在句中做什么成分？主语从句定义：主语从句是在复合句

2、中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。引导主语从句的有：连词that，whether，连接代词who，whom,whose,what，which，连接副词when，where，how，why等。一、连接词1、连词that，whetherthat，whether引导主语从句只起引导作用，在主语从句中不充当任何成分，that本身无实际意义，但不能省略.whether意为“是否”，放在句首句末皆可。Thatpricewillgoupiscertain.Thathewillcomeiscertain.Whetherwegoby

3、trainorbyboatmakesnodifference.Whether he’ll come hereisn’t clear.练习that/whether__________theywillgo iscertain.__________shewillcomeornot isstillaquestion.__________she'scomingornot doesn'tmattertoomuch.Thatwhetherwhether2、连接代词who，whom,whose,what，which,whoever,whateverWhowillwinthemat

4、chisstillunknown.Whomsheborrowedmoneyfromstillpuzzledhim.Whichsidewillwinisnotclear.WhatIshoulddoisnoneofyourbusiness.Whateverhedidisright.Whoeverbreaksthelawwillbepunished.3、连接副词when，where，how，why等。How this happenedis not clear to anyone.Whenhewillbebackdependsontheweather.Whenwe’lls

5、tarttomorrowwillbetoldsoon.Wherethetestwillbegivenisnotyetdecided.Whytheflooriswetisunknown.练习11__________leavestheroomlast oughtto turnoffthelights2__________youhavedone might doharmto other people.3__________hesaidatthemeeting astonishedeverybodypresent.4__________madethelongdistanc

6、ecall isnotimportant.whoeverwhatwhatwho5__________hedidn'tcomehere isnotcleartoanyone.6__________atelephoneworks isaquestionwhichnoteveryonecananswer.7__________shehasgone isnotknownyet.8__________theywillstart hasnotbeendecidedyet.9__________hedidit didn'tconcernme.whyHowwherewhenWhy

7、注意：what与that在引导主语从句时的区别what引导主语从句时在句时在从句中充当句子成分，如主语．宾语．表语，而that则不然。例如：1)Whatyousaidyesterdayisright.2)Thatsheisstillaliveisaconsolation.That只起连接作用,不做成分_______youhavedonemightdoharmtootherpeople.A.ThatB.WhatC.WhetherD.How2.__hesaidatthemeetingastonishedeverybodypresent.A.WhatB.ThatC.Th

8、efact