精选优质文档-倾情为你奉上第一讲定语从句一 关键词定语从句:在复合句中修饰某一名词或代词的从句叫定语从句。一般紧跟在它所修饰的先行词之后。先行词:定语从句所修饰的词叫先行词。关系词:关系词用来引导定语从句。关系词有关系代词和关系副词之分。关系代词有that, which, who,whom,whose,as等;关系副词有when,where,why等。关系词可以1) 代替先行词;2) 引导定语从句; 3)在定语从句中担当一个成分。例如: The car which my uncle had just bought was destroyed in the earthquake.句中,the car为先行词;which是关系词引导是定语从句which my uncle had just bought,同时代替先行词the car在定语从句中作主语。1.关系代词引导的定语从句who指人,在定语从句中作主语。whom指人,在定语从句中作宾语,常可省略。which指物,在定语从句中做主语或宾语,做宾语时可省略。that指人时,相当于who