主要区别在于：1.在关系副词引导的定语从句中,由于引导词的副词属性,只能作状语 is the room where your parents had e 地点状语。I still remember that day when I first came to Shanghai fifty years 时间状语。2.在关系代词引导的定语从句中,引导词可以作主语和宾语、定语(状语当然不能作)。This is the man who tells me the mews who 主语。The man whom you want to see is in the 不定式to see 的宾语 。Is it you who knock at the 主语。Do you recognize the man whose hat is e 定语。Here is the book which the teacher mentioned h 宾语。This is the power station that(which)the peasants built last 宾语。
