精选优质文档-倾情为你奉上定语从句1关系代词引导的定语从句【关系代词引导的定语从句】 (一)、定义:在复合句中,修饰某一名词或代词的从句叫做定语从句。定语从句是指在一个句子中作定语的句子,定语从句要放在所修饰的词后。如:1) The man who lives next to us is a policeman. 2) You must do everything that I do. 上面两句中的man和everything是定语从句所修饰的词,叫先行词,定语从句放在先行词的后面。引导定语从句的词有关系代词that, which, who(宾格whom, 所有格whose)和关系副词where, when、why关系词常有三个作用: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(二)、关系代词引导的定语从句1.who指人,在从句中做主语(1)The boys who are playing football are from Class One.(2)Yesterday I helped an o