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Unit5MusicGrammar介词+whom/which的定语从句定语从句•什么是定语从句？•用来修饰名词或代词的从句叫定语从句。被定语从句所修饰的名词或代词叫先行词（antecedent）。定语从句一般是由关系代词或关系副词来引导的。相当于名词和形容词的作用。•当关系代词在定语从句中充当介词的宾语时，我们用“介词+关系代词(whom/which)”来引导定语从句。•若先行词为人，用“介词+whom”;•若先行词为物，用“介词+which”。forward关系词关系代词whichthatwhowhomwhose分为两类关系副词whenwherewhy3.Thebridge____________theybuiltin1987destroyedintheearthquake.Fillintheblankswithwho,whom,that,which,whose,when,where,why1.Theearthquake___________hitthecityin1906wasthebiggestinAmericanhistory.2.Wedon’tknowthenumberofpeople____________losttheirhomesin1906earthquakethat/whichthat/whowhich/that6.Harryistheboy________motherisourmathsteacher.4.Ahouse____________isbuiltonsandmayfalldowninaearthquake.5.Luckilynoneofthepeople______________Iknowwerekilledintheearthquake.which/thatwho/whom/thatwhose9.Thisisreaon_________Iamlateforyourclass.7.Iwillneverforgettheday_______mybikewasstolen.8.Thisistheplace_________helives.whenwherewhyThisistheplace_________helivesin.思考：Thisistheplace_________helives.wherewhichreturnThisistheplace_________helives.inwhich介词的确定1.根据先行词与介词的搭配习惯来确定。(1)Thestudentdidn'tgivethereasonforwhichshewaslatefortheclass.(2)Shewillneverforgetthedaysinwhichsheworkedwithherfriends.(3)Sheworkedinaplaceinwhichthereweremanyyounggirlslikedher.forwhich=whyinwhich=wheninwhich=where(2)Hestillrememberstheexactdayonwhich(=when)hisbikewasstolen.(3)Shedidn'ttellhimthereasonforwhich(=why)shehadn'tattendedthemeetingontime.2.根据定语从句中的谓语动词或形容词确定介词，改接词语动词搭配，构成固定的动词短语。(1)Themanwithsunglassesisthemanforwhomtheyarewaiting.(2)HeisthemantowhomIusuallyturnforhelp.(3)Theplanaboutwhichtheyaretalkingwillbecarriedoutnextweek.turntosb向某人求助waitforsb等待某人talkaboutsth谈论...(1)Themanwithsunglassesisthemanforwhomtheyarewaiting.Themanwithsunglassesisthemanwhom/who/thattheyarewaitingfor.(2)HeisthemantowhomIusuallyturnforhelp.Heisthemanwhom/who/thatIusuallyturntoforhelp.(3)Theplanaboutwhichtheyaretalkingwillbecarriedoutnextweek.3.根据句子的意思确定介词。有些句子，先行词完全一样，定语从句中动词也不是固定的动词短语。这是需要根据句子所表达的意思选用不同的介词。(1)Thisisthesingerwithwhomtheactresswilldosomevoluntarywork.(2)Thisisthesingeraboutwhomthefansaretalking.“介词+which/whom”的替换1.当先行词为表示时间，地点的名词或名词短语及名词reason时，介词in,on,at,for等与关系词which一定引导定语从句，此时可用相关的关系副词when,where,why等替换。(1)Beijingisthecityinwhich(=where)theheavyhaze(大雾)hasoftentakenpalcerecently.2.the+名词+of+关系代词引导的定语从句时，可用“of+关系代词+the+名词或whose+名词替换。Theyhaveboughtanapartementrecentlythebedroomofwhich(=ofwhichthebedrooms=whosebedrooms)facesouth.Exercises练习1.世纪金榜67页第三题用适当的介词填空。2.世纪金榜66页单项填空3,6,7,8,9,10,11,12.