文档介绍：:修饰一个名词或代词的从句称为定语从句,一般紧跟在它所修饰的先行词后面。:引导定语从句的关联词成为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where,when,why等。关系词常有3个作用:1,引导定语从句。2,代替先行词。3,在定语从句中担当一个成分。,在从句中做主语(1)theboyswhoareplayingfootballarefromclassone.(2),在定语从句中充当宾语,常可省略。(1)(whom)youtalkedaboutonthebus.(2):关系代词whom在口语和非正式语体中常用who代替,可省略。(3)themanwho/,在定语从句中做主语或者宾语,做宾语时可省略(1)footballisagamewhichislikedbymostboys.(2)thisisthepen(which),相当于who或者whom;指物时,相当于which。在宾语从句中做主语或者宾语,做宾语时可省略。(5)thenumberofthepeoplethat/etovisitthecityeachyearrisesonemillion.(6)whereisthemanthat/whomisawthismorning?,也可指物,在定语从句中做定语(1)hehasafriendwhosefatherisadoctor.(2),常用以下结构来代替(3)theclassroomwhosedoorisbrokenwillsoonberepaired.(4)theclassroomthedoorofwhichisbrokenwillsoonberepaired.(5)doyoulikethebookwhosecoverisyellow?(6)doyoulikethebookthecolorofwhichisyellow?+关系代词引导的定语从句关系代词在定语从句中做介词宾语时,从句常由介词+关系代词引导(1)theschool(that/which)heoncestudiedinisveryfamous.(2)theschoolinwhichheoncestudiedisveryfamous.(3)tomorrowiwillbringhereamagazine(that/which)youaskedfor.(4)tomorrowiwillbringhereamagazineforwhichyouasked.(5)we'llgotohearthefamoussinger(whom/that/who)wehaveoftentalked