在句中起定语作用,修饰某一名词或代词,或修饰整个主句的从句,叫做定语从句。
被定语从句所修饰的词叫做先行词。
定语从句通常跟在先行词之後,由关系词引出.因此,定语从句又可称为关系分句.
关系词可分为:
(1)关系代词 e.g.:that,which,who,whom,whose etc.
(2)关系副词 e.g.:when,where,why etc.
关系词既起着联系从句与主句的作用,又代替先行词在从句中担任一定的语法成分.如主句,宾语,定语,状语等.
The woman who is standing by the classroom is our Chinese teacher.
在此句中,the woman是先行词;关系代词who引导定语从句,同时代替先行词在从句中担任主语.
This is the room where Bin Ladin once lived.
在此句中,the room是先行词;关系副词where引导定语从句并在从句中担任地点状语.
The girl who plays the piano very well is his girlfriend.
在此句中,the girl是先行词;关系副词who引导定语从句并在从句中担任主语