TheAttributiveClauseWhichoneisHarryPorter?TheboyisHarryPorterWhichoneisHarryPorter?Theboy_______________________isHarryPorter.whoiswearingglasses定语从句一、概念:在复合句中修饰名词或代词的句子.(在句子中作定语)(Attributiveclause)HarryPorterisasmartboy.HarryPorterisaboywhohasmagicpower.形容词作定语句子作定语,修饰boy,叫做定语从句HarryPorterisaboywhohasmagicpower.先行词关系词定语从句关系代词关系副词which,who,whom,whose,thatwhere,when,why二、用法:Thesearethetreeswhich/thatwereplantedlastyear.先行词是人关系代词:whowhomwhosethatwhich先行词是物Thesearethestudentswho/thatwonthefirstplacelastyear.引导定语从句的关系代词1.who,whom,whose,that用法区别.①who作定语从句的主语或宾语.Themanwhoisspeakingatthemeetingisaworker.Themanisaworker.Themanisspeakingatthemeeting.分解作主语②whom作定语从句的宾语Thewomanwhomtheywantedtovisitisateacher.Thewomanisateacher.Theywantedtovisitthewoman.分解作宾语③that可以作定语从句的主语和宾语.Thewoman(whom/that)theywantedtovisitisateacher.可省略Themanwho/thatisspeakingatthemeetingisaworker.④whose作定语从句的定语(whose既可以指人,也可以指物).Iknowthegirlwhosemotherisateacher.分解Iknowthegirl.Thegirl’smotherisateacher.作定语Ihaveabookwhosecoverisyellow.2.which,that的用法which作定语从句的主语或宾语.Ilikethebook(which/that)youboughtyesterday.Thisisatruckwhich/thatismadeinChina.作主语作宾语可省略3.只能用that的情况①序数词或形容词最高级修饰先行词时TomisthecleverestboythatIhaveeverknown.ThisisthefirstplaythatIhaveseensinceIcamehere.③everything,something,nothing,all,anything,little,much等不定代词作先行词时Everythingthatwesawinthisfilmwastrue.②先行词被every,some,no,all,any,little,much等修饰时。I’vereadallthebooksthatyoulendme.④先行词被theonly,thevery,thesame,thelast修饰时。Thisistheverybookthatbelongstohim.⑤主句中含有疑问词。Whoisthegirlthatisstandingunderthetree?WhichisthemachinethatweusedlastSunday.⑥当先行词同时指人和物时I’veneverheardofthepeopleandthingsthatyoutalkedaboutjustnow.4.关系代词前有介词时(介词提前).指人只用whom,指物只用whichThisistheboywithwhomhetalked.Thisistheringonwhichshespent1000dollars.主语宾语定语指人whothatwhom(优先)whothatwhose(ofwhom)指物WhichthatWhichthatWhose(ofwhich)指人和物thatthatwhose(一)引导定语从句的关系代词如何选用定语从句的关系词•1.首先分清主句和定语从句•2.确定定语从句的先行词•3.确定先行词在定语从句中的功能(主语,宾语,定语或状语)•4.选择合适的关系代词。