精选优质文档-倾情为你奉上高中英语定语从句详细讲解及专项练习一.定语从句及相关术语1.定语从句: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。2.关系词: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。专心-专注-专业二.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 old man who lost his way.2. whom指人,在定语从句中充当宾语,常可省略。(1) Mr. Liu is the person (whom) you talked about on the bus.(2)