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1、Grammar—appositiveclauses＆predicativeclauses名词性从句之同位语＆表语从句同位语从句：I.明确概念与特征：1.同位语从句常放在名词之后，用来补充说明名词的具体内容。常用来接同位语从句的名词有news,idea,promise,question,doubt,wonder,fact,hope,wish,suggestion,advice,possibility,message,word,belief,information等。常用来引导同位语从句的连词有that,what,who,whether以及连接副词where,w
2、hen,why,how等。如：Thenewsthattheirchildrencouldn’tcomebackontimeworriedalltheparents.Ihadnoideawhenthestormwouldend.2.不过有时候为了保持句子结构平衡，同位语从句也不一定直接放在名词后，而会出现隔离情况。如：Wordcamethatthesportsmeethadbeenputoff.SuddenlyagoodideaoccurredtomethatIcouldbuymyteacheragift.3.同位语从句前名词的数同位语从句前的名词通常用单数形
3、式，并且往往带有限定词加以修饰。如：WheredidyougettheideathatIcouldnotcome?Givemeyourpromisethatyouwillcometoourpartythisevening.ExcitingwordcamethatIpassedtheexam.II.正确选用引导词一般来说根据句意来确定相应的引导词，并且从句要用陈述句的语序。1.that引导同位语从句时在句中不作任何成分，但不可省略；Theideathatweplayfootballafterclassisgreat.2.在表示是否的意思时连词只能用whethe
4、r而不能用if；Thequestionwhetheryoucangotoanidealuniversitydependsonyoureffort.3.从句若缺少主语,宾语或定语用连接代词（what,who,whom,whose,which），若缺少状语用连接副词（when,where,how,why）引导。Ihavenoideawhichmobilephoneisthebest—it’samatterofpersonaltaste.AtlastImadeadecisionthatIwouldnevercomebackagain.Thequestionwhat
5、weshoulddowiththissituationisunderdiscussion.Allofushadnoideawhyherefusedourhelp.Thequestionwhyhedidn’tattendthemeetingpuzzledus.Wecan’tsolvetheproblemhowwecantravelfasterthanlight.4.在名词doubt“怀疑”后的同位语从句用whether连接；在nodoubt“不怀疑”之后的同位语从句用that连接。例如：Thereisnodoubtthatwewillwinthefinalma
6、tch.Ihaveadoubtwhetherhewillfinishthejobontime.III.注意从句中的时态一般来说同位语从句的时态要和主句的时态保持一致。但在表示请求、命令、建议等意思的名词后的同位语从句中的谓语动词应用(should)do，(如demand,wish,suggestion,advice，order等)后面的同位语从句要用虚拟语气。如Ihavenoideawhenhewillbeback.Iacceptedmyfather’sadvicethatI(should)apologizetomyfriend.4Myteacher’ssu
7、ggestionthathe(should)learnEnglishisreasonable.Drill:巩固练习：1.TomorrowisTom’sbirthday.Haveyougotanyidea___thepartyistobeheld?A.whatB.whichC.thatD.where2.Awarmthoughtsuddenlycametome______Imightusethepocketmoneytobuysomeflowersformymother’sbirthday.A.ifB.whenC.thatD.which3.---It’sthir
8、tyyearssincewelastmet.---B
