(一)定义及相关术语1.定语从句:修饰某一名词或代词的从句叫定语从句。定语从句一般紧跟在它所修饰的先行词之后。2.先行词:被定语从句修饰的词叫先行词。3.关系词:引导定语从句的词叫关系词。关系词有关系代词和关系副词关系代词有:that,which,who,whom,whose,as等关系副词有:when,where,whyegThemanwhoisshakinghandswithmyfatherisapoliceman.iPhone4SHowmanyattributiveclausescanyoufindintheadvertisement?1Westartedbyaddingthedual-coreA5treaterwhichisuptoastwiceasfast.2It’slikethisisanamazingassistantthatlistenstoyou,understandsyouandcanansweryourquestions….3Itcancompletelychangetheway(that)youthinkaboutwhataphonecandoforyou.(二)关系代词引导的定语从句1.which指物,在定语从句中做主语或宾语,做宾语时常可省略。Footballisagamewhichislikedbymostboys.Thisisthepen(which)heboughtyesterday.AwhichBthatCwhoThefactory()makescomputersisfarawayfromhere.2.that指人时,相当于who或whom;指物时,相当于which。在定语从句中作主语或宾语,作宾语时常可省略。Thenumberofpeoplethat/whocometovisitthiscityeachyearreachesonemillion.Whereistheman(that/whom)Isawthismorning?Theperson()youintroducedtomeisverykind.Theseasonthat/whichcomesafterspringissummer.3.who指人,在定语从句中作主语。TheboywhoiswearingNikeisfromClassOne.Ihelpedanoldmanwhohadlosthisway.whom指人,在定语从句中做宾语,常可省略。MrLiuistheperson(whom)youtalkedaboutonthebus.LiMingisjusttheboy(whom)Iwanttosee.Theprofessor()youarewaitingforhascome.Thegirl()hasoftenbeenpraisedisourmonitor.TotheAppleBoardofDirectorsandtheAppleCommunity:IhavealwayssaidifthereevercameadaywhenIcouldnolongermeetmydutiesandexpectationsasApple'sCEO,Iwouldbethefirsttoletyouknow.Unfortunatelythatdayhascome.致苹果董事会及苹果社区:我曾经说过,如果有一天我不再能履行作为苹果CEO的职责和期望,我会是第一个告诉你们知道的人。不幸的是,这一天到来了。(四)关系副词引导的定语从句1.when指时间,在定语从句中作时间状语。IstillrememberthedaywhenIfirstcametothisschool.2.where指地点,在定语从句中作地点状语。ShanghaiisthecitywhereIwasborn.3.why指原因,在定语从句中作原因状语。Pleasetellmethereasonwhyyoumissedtheplane.Thereasonwhyhewaspunishedisunknowntous.Iwillneverforgetthedays()weworkedtogethet.Iwenttotheplace()Iworkedtenyearsago.Thisisthereason()hewaslate.