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同位语从句一、同位语从句的定义（对先行词内容进行补充说明）Thenewsthattheyhadwonthegamesoonspreadoverthewholeschool.他们比赛获胜的消息很快传遍了整个学校。（theyhadwonthegame说明Thenews的全部内容）二、同位语从句的引导词功能例词从属连词只起连接作用，不充当从句中的任何成分。that,whether连接代词既起连接作用，又在从句中担任成分（主语、宾语、表语或定语）。who,what，whose,which连接副词既起连接作用，又在从句中担任成分（状语）。when,where,why,how复合代词&复合副词既起连接作用，又在从句中担任成分（主语、宾语、表语或定语、状语）。whoever,whatever,whichever,whenever,wherever,however1.如同位语从句成分、意义完整，应用that引导同位语从句。Thegeneralgavetheorderthatthesoldiersshouldcrosstheriveratonce.将军下达了战士们立即过河的命令。2.如同位语从句成分完整，意义不完整，需增加是否的含义，应用whether引导同位语从句。例：We'lldiscusstheproblemwhetherthesportsmeetingwillbeheldontime.我们将讨论运动会是否会如期举行的问题。3.如同位语从句成分完整，意义不完整，需增加什么时候、什么地点、什么方式等含义，应用when,where,how等词引导同位语从句。Ihavenoideawhenhewillbeback.Ihavenoimpression(印象)howhewenthome,perhapsbybike.4.当主句的谓语较短，而同位语从句较长时，同位语从句常后置。如：Thestoryspreadswidelythattheherolikestobesurroundedwithcutekids.三、把握同位语从句和定语从句的区别1、同位语从句的内容=所修饰的名词在内容。定语从句说明先行词的性质与特征，与先行词是修饰与被修饰的关系Thereportthathewasgoingtoresignwasfalse.(同位语)Thereportthatwetalkedaboutyesterdaywasfalse.（定语）*that在所有从句中的用法总结：主、表、同不做成分且不省；宾不做成分但可省；定做成分是宾省；状语中不用它。四、典型例题1.Someresearchersbelievethatthereisnodoubt____acureforAIDSwillbefound.A.whichB.thatC.whatD.whether2.Awarmthoughtsuddenlycametome____Imightusethepocketmoneytobuysomeflowersformymother'sbirthday．A.ifB.whenC.thatD.which3.Nobodybelievedhisreasonforbeingabsentfromtheclass________hehadtomeethisuncleattheairport.A.whyB.thatC.whereD.because4.Alongwiththeletterwashispromise_______hewouldvisitmethiscomingChristmas.A.whichB.thatC.whatD.whether5.Danbyleftawordwithmysecretary____________hewouldcallagainintheafternoon.A.whoB.thatC.asD.which