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主语从句QQ空间 6665.ccWhowillwinthematchisstillunknown.Iwanttoknowwhathehastoldyou.Thefactisthatwehavelostthegame.Thenewsthatwewonthegameisexciting.主语从句宾语从句表语从句名词性从句的作用相当于名词，因此主语从句、表语从句、宾语从句和同位语从句分别作主句的主语、表语、宾语和同位语。同位语从句NounClauses(名词性从句)SubjectClause(主语从句)AppositiveClause〔同位语从句〕ObjectClause〔宾语从句〕PredicativeClause〔表语从句〕Isthemoonaplanet?Thisquestionis______________ifstudentsaretoshowthattheyunderstandthenatureof__________.Somescientiststhinkthattheearth______________themoonbecausethemooncirclesourplanet.Othersbelievethatthemoon_______beforetheearthwasformed.Theythinkthatearlierintimeittravelledthroughspaceasasmallplanetwhichwascaughtbytheearth’sgravity.__________,itgoesaroundourplanet.Theevidenceforthistheoryisthatthe_____thatmakeuptherocksonthemoonseemtobedifferentfromthoseonearth.Whatisclearisthatthemoonissmallerthantheearthandthis_________it_______escapingfromtheearth.Althoughitsoriginmaystillbea________,themooncanneverbeanythingmorethanasatelliteoftheearth.fundamentalastronomygavebirthtoexistedAsaresultatomspreventsfrompuzzleIsthemoonaplanet?Thisquestionis______________ifstudentsaretoshowthattheyunderstandthenatureof__________.Somescientiststhinkthattheearth______________themoonbecausethemooncirclesourplanet.Othersbelievethatthemoon_______beforetheearthwasformed.Theythinkthatearlierintimeittravelledthroughspaceasasmallplanetwhichwascaughtbytheearth’sgravity.__________,itgoesaroundourplanet.Theevidenceforthistheoryisthatthe_____thatmakeuptherocksonthemoonseemtobedifferentfromthoseonearth.Whatisclearisthatthemoonissmallerthantheearthandthis_________it_______escapingfromtheearth.Althoughitsoriginmaystillbea________,themooncanneverbeanythingmorethanasatelliteoftheearth.fundamentalastronomygavebirthtoexistedAsaresultatomspreventsfrompuzzleoooopsp主语从句：做主语用的名词性从句，因其在复合句中做主语，又称主语从句，引导主语从句的有连词that，whether，衔接代词who，what，which，衔接副词when，where，how，why等。

1〕从属连词：that，whether等.that引导主语从句只起引导作用，本身无实践意义，在主语从句中不充任任何成分，但不能省略。

Thatpeoplecutdowntoomanytreesdestroyedthebalanceofnature.Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved..Itwasnotclearwhetherthesolidshapewouldlastornot.SubjectClauseSubjectFormedSubjectWhetherthesolidshapewouldlastornotwasnotclear.Real引导主语从句在句首只能用whether,有it作方式主语的whether/if都可以.Conclusion:ifIf×留意:由that引导的主语从句有时为了使句子构造平衡,防止“头重脚轻〞,常用it作方式主语,而把从句放在后面。例如:

1.Thathewillrefusethispieceofadviceisimpossible.______________________________________________________________________________2.Thattheyshouldlikeeachotherisnatural._____________________________________*it为方式主语Itisnaturalthattheyshouldlikeeachother.Itisimpossiblethathewillrefusethispieceofadvice.这样就构成了下面一些常用句型:1)Itis+n.+从句Itisapity/shamethat...遗憾的是……Itisasurprisethat…令人惊奇的是…Itisafactthat……是现实Itiscommonknowledgethat……是常识*_______________(很遗憾)welostthematch.*______________(这是现实)hecheatedintheexam.ItisapitythatItisafactthat2)Itis+adj.+从句It’scertainthat…一定…Itispossiblethat...很能够……Itisunlikelythat...不能够……Itisobviousthat…很明显…Itisnecessary\important\natural\...that…*_________________(很能够)shewillcomebacktomorrow.*_________________(很明显)thismeasureiseffective.+(should)+do…ItispossiblethatItisobviousthat3)It+不及物动词+从句Ithappenedthat...碰巧……Itoccurredtomethat…我忽然想起…*________________(刚好)Icameintotheofficeatthattime.*____________________(我忽然想起)Iforgettosenttheletter.IthappenedthatItoccurredtomethat4)It+be+过去分词+从句Itissaidthat...听说……Itisknowntoallthat...众所周知……Itisreportedthat...据报道……Itisbelievedthat...据信……;人们置信……Itissuggestedthat+(should〕do...建议……Itmustbeadmittedthat…必需成认……Itcannotbedeniedthat…不可否认……Itmustbepointedoutthat…需指出的是……*___________________(据报道)20peoplewerekilledintheaccident.*______________________(建议)weshouldeatmorevegetableanddomoreexercise.ItisreportedthatItissuggestedthat：Theyshouldlikeeachotherisnatural.：Thattheyshouldlikeeachotherisnatural.：Itisnaturalthattheyshouldlikeeachother.：IfMaryreallyheardhimisreallydoubtful.：ItwasdoubtfulifMaryreallyheardhim.TorFquestions2.衔接代词who，what，which,whatever,whichever,whoeverWhatmanyscientistsbelieveisthatthecontinuedpresenceofwater…Whowilltakepartinthemeetinghasnotbeendecided.Whoeverbreaksthelawwillbepunished.Whichstudentwillwinthefirstisuncertain.3)衔接副词when，where，how，why等。Whytheysuddenlydisappearedstillremainsamystery.Whentheywillsetoffisnotdecided.Wheresheisfromisunknown.Howwewillpaintthehousehasnotbeendecided.Completethesentencesusingwhat,whether,where,when，who,why,howorthat.1.(_____isneededforsuccess)isyourhardwork.3.(_____wewillgotomorrow)hasn’tbeendecidedyet.2.(______theywillarrive)hasbeentoldtotheteacher.4.(______canjoininthesportmeet)isdecidedbytheteacher.5.(________itwillrainornot)isnotclear.7.(______theearthisasolidball)isknowntousall.WhatWhen/HowWhere/whetherWhoWhetherThat6.(____theearthisbecomingwarm)isagoodtopicforresearch.Why主语从句作主语时，谓语动词普通用单数方式。Conclusion:用that/whether/if//where/how/when/why/who/what/which/howmuch/etc.来衔接主语从句.Summary:SubjectClause3.引导主语从句在句首只能用whether,有it作方式主语的whether/if都可以.2.That在主语从句中不能省略.4.有时为了使句子构造平衡,防止“头重脚轻〞,常用it作方式主语,而把从句放在后面.4种句型。5.主语从句作主语时，谓语动词普通用单数方式。2._______theycansolvethequestionisstillunknown.A.IfB.WhichC.WhetherD.What3._____hesaidatthemeetingastonishedeverybody.A.WhyB.WhatC.ThatD.Who4.____isafactthatEnglishisacceptedasaninternationallanguage.A.ThereB.ThisC.ThatD.It1._____weneedmorepracticeisquiteobvious.A.WhatB.ThatC.WhenD./Pickuponenumberandfinishthetaskinit,thenyoucangetsomepoints.GameTime!123456789101112131415161718192021222324252627282930Correctornot?*Whenthemeetingwillbeheldhaven’tbeenknownyet.…………….beheldhasn’tbeenknownyet.×Payattention:主语从句的谓语用单数方式

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thecatdomadeWhatthecatdidmadethebabycry.WhatcryMakeasentence301.Thequestionis________thefilmisworthseeing.2.________weshallattendthemeetinghasn'tbeendecidedyet.用whether\if填空whetherWhether10Translatethesentence*_______________________________(他们很需求协助)isquiteclear.Thattheyarebadlyinneedofhelp20talkabouttheuseofcellphoneWhattheyaretalkingaboutistheuseofcellphone.Makeasentence30*Ifwewillhaveameetinghasn’tbeendecidedyet.×Correctornot?Whetherwewill………….decidedyet.Payattention:放在名词性从句句首，表示“能否〞，只能用whether,不能用if10Translatethesentence*Itisknowntous_______________________________________(马克.吐温怎样成为一位伟大的作家).howMarkTwainbecameagreatwriter20

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