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GrammarAppositive同位语是句子成分的一种,它位于名词、代词后面,说明它们的性质和情况,它可以由名词、代词、名词性短语或从句充当。同位语theAppositive语法精解(一)同位语的表现形式有以下几种：(1)名词Tom,ourmonitor,isahandsomeboy.(2)代词Imyselfwilldotheexperiment.(3)数词Sheistheoldestamongthemsix.(4)从句Hetoldmethenewsthattheplanehadexploded.他告诉我飞机爆炸的消息。(5)由suchas,thatis引导Somesubjects,suchasmathsandphysics,areverydifficulttolearn.某些学科,例如数学和物理,是很难学的。(6)由of引导ThecityofBeijinghasbeengreatlychangedsince2000.自从2000年以来,北京市发生了很大的变化。(7)由or引导Thefreezingtemperature,orfreezingpoint,isthetemperatureatwhichwaterfreezesunderordinarypressure.结冰温度即冰点,是水在常压下结冰时的温度。同位语从句theAppositiveclause(1)同位语从句的定义在复合句中用作同位语的从句称为同位语从句。同位语从句是名词性从句的一种。它在句中起同位语的作用。语法精解(二)它一般放在fact,news,idea,truth,hope,problem,information,belief,thought,doubt,promise,question等名词的后面,对前面的名词作进一步的解释,说明前面名词的具体含义。引导同位语从句的词有连词that,连接副词how,when,where,whether等。e.g.Thehopethathemayrecoverisnotgoneyet.Theproblemwhetherweshouldcontinuetodotheexperimenthasbeensolved.Ihavenoideawhenhewillcomeback.同位语从句有时被别的词把它和名词隔开：注意:ThestorygoesthatWilliamTellkilledthekingwithanarrow.Wordcamethattheirteamhadwon.⑵同位语从句的表现形式:①由that引导Thefactthatyouhaven’tenoughtimetodotheworkissimplyunbelievable.Thehopethathemaycomehereisnotgoneyet.ThenewsthathehasbeenelectedpresidentoftheUnitedStatesistrue.Thetruththatheavyobjectsandlightobjectsfallatthesamespeedisknowntoall.Theproblemthatshelaterdevelopedaseriouslungdiseasebotheredscientists.②由whether引导Thequestionwhetherweneedmoretimetodotheworkhasnotbeendiscussed.③由when引导Ihavenoideawhentheywillgo.⑶有时可用namely(即),thatistosay(也就是说),inotherwords(换句话说),thatis(那就是),forexample等引出同位语,说明其前面的名词或代词。有时同位语直接跟在名词或代词的后面。Hetoldusthegoodnews,namely,themuseumisopentoall.ThereisonlyonewayofimprovingyourEnglish,thatis,topracticemore.AltogetherDollyhadlivedforsixyears,halfthelengthofthelifeoftheoriginalsheep.⑷同位语从句与定语从句的区别:同位语从句与定语从句在使用中常常混淆,我们可以从以下几个方面区别它们:①同位语从句说明的名词大都是抽象名词;定语从句所修饰、限定的名词或代词有抽象的也有不抽象的。WeexpressthehopethattheywillcometovisitChinaagain.(同位语从句)Thosewhowanttogopleasesigntheirnameshere.(定语从句)②同位语从句所说明的名词与从句没有逻辑关系,定语从句所限定的名词是从句逻辑上的主语、宾语、表语、定语、状语等。Thenewsthattheywonthematchistrue.(同位语从句,news和从句没有逻辑关系)Thenewsthatyoutoldusyesterdayistrue.(定语从句,news是told的逻辑宾语)Theorderwhenweshouldgobackhasn’treachedus.(同位语从句,order和从句没有逻辑关系)ThedaywhenNewChinawasfoundedwillneverbeforgotten.(定语从句,day是founded的逻辑状语)③同位语从句主要由连接词that引导,有时也可用when,where,who,whether等引导;定语从句由关系代词或关系副词引导。Thenheraisedthequestionwheretheyweretogetthemachineneeded.Doyouknowtheplacewherehewasborn?④引导同位语从句的连词不可省略;引导定语从句的关系代词作宾语时常可省略。Thenewsthathehasbeenelectedmonitorofourclassistrue.Thenews(that)hetoldmeisexciting.⑤同位语从句与先行词一般可变成一个完整句子,谓语动词用be的不同形式。Heheardthenewsthattheirteamhadwon.此句可以变为一个表语从句:Thenewswasthattheirteamhadwon.练习1.TwofifthsofallgirlsinAmericaareonadiet./Thefactworriestheirparentsandteachersalot.ThefactthattwofifthsofallgirlsinAmericaareonadietworriestheirparentsandteachersalot.把下面两个句子连成一个含同位语从句的复合句。2.TheQueenofEnglandwasonafour-dayvisitinChina./Weheardthenewslastnight.WeheardthenewslastnightthattheQueenofEnglandwasonafour-dayvisitinchina.3.Teenagersshouldn’tspendtoomuchtimeonline./ManyChineseparentsholdtheview.ManyChineseparentsholdtheviewthatteenagersshouldn’tspendtoomuchtimeonline.4.Timetravelispossible./Wehavenoscientificprooffortheidea.Wehavenoscientificprooffortheideathattimetravelispossible.5.Studentsshouldbegivenmorefreetime./Thesuggestioniswelcomedbymanypeople.Thesuggestionthatstudentsshouldbegivenmorefreetimeiswelcomedbymanypeople.1.Wedon’tthinkyoutwohavemetbefore.我们想你们两位以前没有见过面。(宾语从句)翻译句子,并说明这个名词性从句的作用。2.ItiscertainthatJohnwilldowellinhisexam.约翰肯定会考好。(主语从句)3.Whethertheyarecomingornotdon’tmattertoomuch.他们来不来无关紧要。(主语从句)4.Nowiswhenweneedhimmost.现在是我们最需要他的时候。(表语从句)5.Ihavenoideahowshegotthroughtheforest.我不知道她是如何穿过那个森林的。(同位语从句)5.Thefactthattheywontheprizemadeushappy.他们获奖的事实令我们高兴。(同位语从句)用适当的连接代词或连接副词填空。1.Ican’tdecide_____bookIshouldbuy.2.Chinaisnolonger____itusedtobe.3.Iamveryinterestedin____heimprovedhisEnglishinsuchashorttime.4._____weneedismoremoney.5.Thetruth_____theearthturnsaroundthesunisknowntous.whichwhathowWhatthat1.Oneofthemheldtheview__thebooksaidwasright.A.whatthatB.thatwhatC.thatD.whether单词填空2.Thereason___hehastogois___hismotherisillinbed.A,why;whyB.why;becauseC.why;thatD.that;because3.Theyreceivedorders___theworkbedonerightaway.A.whichB.thatC./D.when4.Youcantaketheseat____isfree.A.whichB.thatC.whereD.inwhich5.Thefilmbroughtthehoursbacktome____Iwastakengoodcareofinthatfar-awayvillage.A.untilB.thatC.whenD.where6.He’sgothimselfintoadangeroussituation__hewaslikelytolosecontrolovertheplane.A.whereB.whichC.whatD.why7.That’stheonlything___hecandonowA.whichB.allC.thatD.what8.Informationhasbeenputforward___moremiddleschoolgraduateswillbeadmittedintouniversities.A.whileB.thatC.whenD.as9.Alongwiththeletterwashispromise___hewouldvisitmethiscomingChristmas.A.whichB.thatC.whatD.whether10.Thereisanewprobleminvolvedinthepopularityofprivatecars____roadconditionsneed____.A.that;tobeimprovedB.which;tobeimprovedC.where;improvingD.when;improving1.Alongwiththeletterwashispromise____hewouldvisitmethisc