Simone
简单说：关系副词 和副词性质一样，但作用不同：引导定语从句。关系副词 = 介词 + which-, 两者可互换的。至于什么“介词”要视上下文而定。举个例子：e.g. This is the old house ( where) Deng Xiaoping used to live.拆开成两个相关的简单句： 1. This is the old house. 2. Deng Xiaoping used to live in the old house.将两句合贺蔽森并时，后句有重复部分：the old house 需要替代并闹。如果只替代the old house = which-e.g. This is the old house (which/ that) Deng Xiaoping used to live in.也可将 in 提到前面： This is the old house in which Deng Xiaoping used to live.如果只想用一个词替代，in + which-, 那就用关系副词：where. This is the old house where Deng xiaoping used to live.所以：where= in which/ which...in = in the old house.其他常见的关系副词：1. (a time) when- = prep. + which-2. (the way) how-= in + which-3. (the reason) why-= for + which-关系副词用来引导关系从句，即定语从句。如This is the hotel where we stayed last summer.I'll never forget his surprise when we told him.Can you tell me the reason why you are so unhappy?关系代词有who、whom、whose、that、which，它们都是用来引导定语从句的。这类代词都起着三重作用，一是代表前面的名词，二是把从句和它所修饰的词连接起来，三是在从句中叶禅亩担任一个成分。如The noise that he made woke everybody up.I met someone who said he knew you.I saw something in the paper which might interest you.
