定语从句关系代词:that,which,who,whom,whose,as关系副词:when,where,why1
关系代词的省略问题关系代词在定语从句中作主语,不可以省略;作宾语则可以省略
①Thisisthemanwhohelpedmeyesterday
(作主语,不可省略)②Thisisthefactory(which/that)wevisitedlastyear
(作visited的宾语,可以省略)③Hereisthecoatwhich/thatwillbemadetoyou
这是一件做给你的衣服
(作主语)2
whose+N=the+N+ofwhom/which=ofwhom/which+the+N①Imetaboy,whosefatherwasanastronaut
=Imetaboy,thefatherofwhomwasanastronaut
②Thebookwhosecoverisverybeautifulismine
=Thebookofwhichthecoverisverybeautifulismine
关系副词的一般用法关系副词有when,where,why,在定语从句中作状语,分别表示时间、地点和原因
when的先行词通常是time,day,season,age,occasion等时间名词;where的先行词通常是place,city,village,house,case,situation,scenes,point等地点或情形名词;why的先行词只能是reason
关系副词when和where有时可用“介词+which”代替,why可用forwhich代替
如:①Thereareoccasionswhen(=onwhich)youhavetotelllies
②Beijingistheplacewhere(=inwhich)Iwasborn