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第一部分定语从句的引入通过讲解定语引入定语从句定语对名词和代词进行修饰、限制的成分，叫定语英语中可以用单个的词，短语或句子做定语1.单个的词做定语，多数前置，有时后置例如：一个有趣的故事aninterestingstory美味的食物deliciousfood奇怪的事情somethingstrange2.短语作定语包括介词短语，分词短语，不定式短语等必须后置例如：墙上的画thepictureonthewall在隔壁唱歌的女生thegirlsinginginthenextroom去年建的房子thehousebuiltlastyear明天要参加的会议ameetingtoattendtomorrowThisisthecarwhichheboughtlastyear.先行词定语从句关系代词3.这就是他去年买的那辆车3.句子作定语----定语从句，必须后置第二部分•讲解定语从句定语从句：由一个句子充当定语,即在复合句中修饰名词或代词的从句定语从句的位置：放在被修饰的名词或代词后先行词：引导词：引导定语从句的词关系代词who,whom,whose,which,that,as关系副词when,where,why被定语从句修饰的名词或代词指人作主语作宾语作定语指物既指人也指物whothatwhomwhothatwhosethatwhichthatwhichwhosethatthatwhose作表语thatthatthat关系代词的指代和作用whose指物时,可以与ofwhich调换关系代词作宾语可省略引导定语从句关系代词的用法：1)Aplaneisamachinethat/whichcanfly.2)Thenoodlesthat/whichIcookedweredelicious.3)Let’saskthemanthat/whoisreadingthebookoverthere.4)Thegirlwhom/who/thatwesawyesterdayisJim’ssister.(主语)(宾语)(主语)(宾语)指人whom/who/that都可作宾语，whom为最好选择5)That’sthemanwhosehousewasburneddown.(定语)第三部分：练习定语从句合并句子：合并成含定语从句的复合句Iliketheboy.(1)Heissingingnow.Iliketheboy_______issingingnow.我喜欢正唱歌的男生。(2)Everyoneinourclasshelpshim.Iliketheboy_______everyoneinourclasshelps.我喜欢我们班的人都帮助的那男生。(3)Hisparentsarebothteachers.Iliketheboy________parentsarebothteachers.我喜欢他父母都是教师的那男生。whowhomwhose(4).I’llneverforgettheday.Iwasbornontheday.I’llneverforgetthedayonwhichIwasborn.I’llneverforgetthedaywhenIwasborn.我永远不会忘记我出生的日子。(5).Thisisthefactory.Heworkedinittwoyearsago.Thisisthefactorywhichheworkedintwoyearsago.Thisisthefactoryinwhichheworkedtwoyearsago.Thisisthefactorywhereheworkedtwoyearsago.这就是我两年前工作过的工厂。Jointwosentencesintoone(合并句子)Thisisthefactory.Wevisiteditlastweek.1.Thisisthefactorythatwevisitedlastweek.Thefilmisinteresting.Theysawitlastnight.2.Thefilmwhichtheysawlastnightisinteresting.Thestudentswillnotpasstheexam.Theydon’tworkhard.3.Thestudentswhodon’tworkhardwillnotpasstheexam.定语从句翻译练习1）住在我们隔壁的人是卖水果的。Themansellsfruit.2）飞机是会飞的机器。Aplaneisamachine3）我永远不会忘记我入党的日子。I’llneverforgetthedaywholivesnexttousthatcanfly.whenIjoinedtheParty.onwhich如何选择关系代词，关系副词引导定语从句一看先行词是指代人还是指物，whowhichthatthatwhomwhosewhose二看先行词的含义在从句中所做的成分作主、宾、表、定选关系代词作状语选关系副词(whenwherewhy)Fillintheblanks.1.Istillremembertheday_________wespentintheforest.2.Istillremembertheday____________IfirstcametoBeijing.3.Thefactory_________wewillvisitislarge.4.Thefactory___________hisfatherworksislarge.5.I’llneverforgetthetime___________weworkedonthefarm.6.Thisisthehouse____________welivedlastyear.that/whichwhen/onwhichthat/whichwherewhen/atwhichwhere/inwhich归纳:关系副词when指时间,关系副词where指地点,在定语从句中作状语。即使先行词是时间地点,若作从句中的宾语，只能用关系代词that,which.3.Thehouse__________theybuiltin1987stayedupintheearthquake.练习一Fillintheblankswithwho,whom,that,whichorwhose.1.Theearthquake___________hitthecityin1906wasthebiggestinAmericanhistory.2.Wedon’tknowthenumberofpeople__________losttheirhomesin1906earthquake.that/whichthat/whowhich/that6.Harryistheboy______motherisourmathsteacher.4.Ahouse__________isbuiltonsandmayfalldowninaearthquake.5.Luckilynoneofthepeople______________Iknowwerekilledintheearthquake.which/thatwhom/who/thatwhose7.Theman______Isawtoldmetowait.8.Themanto_____Ispokewasaforeigner.9.Iknowaboy______fatherisanacrobat.(杂技演员)10.Hesawahouse_____windowswereallbroken.whomwhomwhosewhose1.Thegirl_____yousawinthestreetisMary.A.thatB.whoseC.whichD.asA2.Thisisthebestbook_____Ihavebeenlookingforallthisyear.A.whoB.whomC.whichD./D3.Theboy_____hastwolovelydogs.A.wholivenextdoorB.whichlivesnextdoorC.whomlivesnextdoorD.thatlivesnextdoorD4.Haveyouvisitedthehouse_____thefamousscientistwasborn?A.whereB.inthatC.thatD.whichA5.Isthisfactory_____alotofstudentsvisitedyesterday?A.theoneB.thatC.whichD./A练习三改错练习1.Thisfrightenedboywhomotherwaslostinthedisasterislookingforhernow.2.HelikedthethingsandpeoplewhichhemetintheUSA。3.Doyouknowthestudentswhoisplayingtheviolin?4.Peterlivesinahousewhichwindowfacessouth?Whowhosewhich-thatIs---are或students--studentwhich-whose1.Thatbookthatyouwantitisonthedesk.2.Isthisfactorythatwevisitedlastweek?theoneThisfactoryistheonewevisitedlastweek?3.Heisthepersonforwhomyouarelooking.for4.ThepersontowhomyoutalkedisLily.ThepersonwhomyoutalkedtoisLily.归纳：1定语从句要避免成分重复2定语从句要避免漏用先行词3含有介词的短语动词一般不拆开that和which的区别1.that做关系代词，既可指人，也可指物which只能指物2.that只能引导限制性定语从句，而which可引导限制性和非限制性定语从句3.that指物，可用于多种场合，which则不能（有专项练习）1.I’vereadallthebookswhichIborrowedfromthelibrary.which→that或去掉which。当先行词被all,every,no,some,any,little等修饰时,常用that引导定语从句。2.ThisisthebestfilmwhichIhaveeverseen.which→that或去掉which。当先行词被序数词、形容词的最高级或theonly,thevery等所修饰时,常用that引导定语从句。3.MyfatherandMr.Smithtalkedaboutthingsandpersonswhotheyrememberedinthecountry.如果先行词既指人又指物时,常用that引导定语从句。that4.Everythingwhichwesawwasofgreatinterest.当先行词为something,anything,everything,nothing,all等时,常由that引导定语从句。which→that或去掉which。练习四用适当的关系代词填空1.Theterribletyphoonkilledthepeopleandcattle_______wereinthefields.2.Thewindblewdownthetallesttree_______isinfrontofourschoolgate.3.Thisistheverything______Iwaslookingfor.4.Thisisthesecondnovel______Ihaveeverread.5.Thereisnothingintheworld_______canfrightenme.6.Whoistheman_______isreadingunderthetree?thatth