关系代词有who，whom，whose，that，which，as等，可用作引导从句的关联词。它们在定语从句中可作主语、表语、宾语、定语等；另一方面它们又代表主句中为定语从句所修饰的那个名词或代词(通称为先行词)。

如： He is the man whom you have been looking for.　 他就是你要找的那个人。八、连接代词：

连接代词主要有who, whom, whose, what, which, whoever, whomever, whosever,

whatever, which ever等。

连接代词一般指疑问， 但what, whatever除了指疑问之外， 也可指陈述。

Do you know who has won the Red Alert game? 你知道谁赢了这一局红警游戏吗？

I don't know whom you should depend on? 我不知道你该依靠谁。

This book will show you what the best CEO should know. 这本书会告诉你最好CEO的应该了解什么。

Have you determined whichever you should buy, a Nokia walkie-talkie or a Motorola cell phone? 你决定好买诺基亚无线话机呢还是买摩托罗拉手机？