主語從句QQ空間 6665.ccWhowillwinthematchisstillunknown.Iwanttoknowwhathehastoldyou.Thefactisthatwehavelostthegame.Thenewsthatwewonthegameisexciting.主語從句賓語從句表語從句名詞性從句的作用相當于名詞，因此主語從句、表語從句、賓語從句和同位語從句分別作主句的主語、表語、賓語和同位語。同位語從句NounClauses(名詞性從句)SubjectClause(主語從句)AppositiveClause〔同位語從句〕ObjectClause〔賓語從句〕PredicativeClause〔表語從句〕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主語從句：做主語用的名詞性從句，因其在復(fù)合句中做主語，又稱主語從句，引導(dǎo)主語從句的有連詞that，whether，銜接代詞who，what，which，銜接副詞when，where，how，why等。

1〕從屬連詞：that，whether等.that引導(dǎo)主語從句只起引導(dǎo)作用，本身無實踐意義，在主語從句中不充任任何成分，但不能省略。

Thatpeoplecutdowntoomanytreesdestroyedthebalanceofnature.Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved..Itwasnotclearwhetherthesolidshapewouldlastornot.SubjectClauseSubjectFormedSubjectWhetherthesolidshapewouldlastornotwasnotclear.Real引導(dǎo)主語從句在句首只能用whether,有it作方式主語的whether/if都可以.Conclusion:ifIf×留意:由that引導(dǎo)的主語從句有時為了使句子構(gòu)造平衡,防止“頭重腳輕〞,常用it作方式主語,而把從句放在后面。例如:

1.Thathewillrefusethispieceofadviceisimpossible.______________________________________________________________________________2.Thattheyshouldlikeeachotherisnatural._____________________________________*it為方式主語Itisnaturalthattheyshouldlikeeachother.Itisimpossiblethathewillrefusethispieceofadvice.這樣就構(gòu)成了下面一些常用句型:1)Itis+n.+從句Itisapity/shamethat...遺憾的是……Itisasurprisethat…令人驚奇的是…Itisafactthat……是現(xiàn)實Itiscommonknowledgethat……是常識*_______________(很遺憾)welostthematch.*______________(這是現(xiàn)實)hecheatedintheexam.ItisapitythatItisafactthat2)Itis+adj.+從句It’scertainthat…一定…Itispossiblethat...很能夠……Itisunlikelythat...不能夠……Itisobviousthat…很明顯…Itisnecessary\important\natural\...that…*_________________(很能夠)shewillcomebacktomorrow.*_________________(很明顯)thismeasureiseffective.+(should)+do…ItispossiblethatItisobviousthat3)It+不及物動詞+從句Ithappenedthat...碰巧……Itoccurredtomethat…我忽然想起…*________________(剛好)Icameintotheofficeatthattime.*____________________(我忽然想起)Iforgettosenttheletter.IthappenedthatItoccurredtomethat4)It+be+過去分詞+從句Itissaidthat...聽說……Itisknowntoallthat...眾所周知……Itisreportedthat...據(jù)報道……Itisbelievedthat...據(jù)信……;人們置信……Itissuggestedthat+(should〕do...建議……Itmustbeadmittedthat…必需成認……Itcannotbedeniedthat…不可否認……Itmustbepointedoutthat…需指出的是……*___________________(據(jù)報道)20peoplewerekilledintheaccident.*______________________(建議)weshouldeatmorevegetableanddomoreexercise.ItisreportedthatItissuggestedthat：Theyshouldlikeeachotherisnatural.：Thattheyshouldlikeeachotherisnatural.：Itisnaturalthattheyshouldlikeeachother.：IfMaryreallyheardhimisreallydoubtful.：ItwasdoubtfulifMaryreallyheardhim.TorFquestions2.銜接代詞who，what，which,whatever,whichever,whoeverWhatmanyscientistsbelieveisthatthecontinuedpresenceofwater…Whowilltakepartinthemeetinghasnotbeendecided.Whoeverbreaksthelawwillbepunished.Whichstudentwillwinthefirstisuncertain.3)銜接副詞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主語從句作主語時，謂語動詞普通用單數(shù)方式。Conclusion:用that/whether/if//where/how/when/why/who/what/which/howmuch/etc.來銜接主語從句.Summary:SubjectClause3.引導(dǎo)主語從句在句首只能用whether,有it作方式主語的whether/if都可以.2.That在主語從句中不能省略.4.有時為了使句子構(gòu)造平衡,防止“頭重腳輕〞,常用it作方式主語,而把從句放在后面.4種句型。5.主語從句作主語時，謂語動詞普通用單數(shù)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:主語從句的謂語用單數(shù)方式

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thecatdomadeWhatthecatdidmadethebabycry.WhatcryMakeasentence301.Thequestionis________thefilmisworthseeing.2.________weshallattendthemeetinghasn'tbeendecidedyet.用whether\if填空whetherWhether10Translatethesentence*_______________________________(他們很需求協(xié)助)isquiteclear.Thattheyarebadlyinneedofhelp20talkabouttheuseofcellphoneWhattheyaretalkingaboutistheuseofcellphone.Makeasentence30*Ifwewillhaveameetinghasn’tbeendecidedyet.×Correctornot?Whetherwewill………….decidedyet.Payattention:放在名詞性從句句首，表示“能否〞，只能用whether,不能用if10Translatethesentence*Itisknowntous_______________________________________(馬克.吐溫怎樣成為一位偉大的作家).howMarkTwainbecameagreatwriter20

report,getthehighestpoin