1. 连接代词的用法连接代词主要包括who, whom, what, which, whose, whoever, whatever, whichever, whosever 等，它们在句中可用作主语、宾语、表语、定语等，可以引导主语从句、宾语从句和表语从句：I don’t know who he is. 我不知道他是谁。What he says sounds reasonable. 他说的话听起来有道理。The question is who(m) we should trust. 问题是我们该信任谁。I’ll take whoever wants to go. 谁想去我就带谁去。Take whichever seat you like. 你喜欢坐哪个座位就坐哪个。I will just say whatever comes into my mind. 我想到什么就说什么。 【注】who, whom, whoever 等不用于名词前作定语。

2. what 的两种不同用法请看以下两个句子：I didn’t know what he wanted. 我不知道他想要什么。I gave her what she wanted. 我给了她想要的一切。上面第一句中的 what 表示“什么”，带有疑问的意味；第二句中的 what 表示“…所…的一切事或东西”，其意义上大致相当于 that (those) which, the thing (things) that, anything that, all that, as much as等，又如：What [=That which] you say is quite true. 你说的完全是事实。He saves what [= all that] he earns. 他赚多少，积蓄多少。Call it what [= anything that] you please. 你喜欢叫它什么就叫它什么。这样用的 what 有时还可后接一个名词：He gave me what money [= all the money that] he had about him. 他把身上带的钱全给了我。 What friends [=All the friends that] he has are very poor. 他所有的朋友都很穷。

3. 关于whatever, whoever与whichever它们可引导主语从句和宾语从句：He does whatever she asks him to do. 她要他做什么，他就做什么。 I’ll give the ticket to whoever wants it. 请想要这票，我就把它给谁。Whichever team gains the most points wins. 哪个队得分最多，哪个队就赢。【注】其中的 ever 主要用于加强语气，含有“一切”、“任何”、“无论”之义。使用这类词时，注意不要按汉语习惯用错句子结构：任何人(谁)先来都可以得到一张票。误：Anyone comes first can get a ticket. / Who comes first can get a ticket.正：Anyone who comes first can get a ticket. / Whoever comes first can get a ticket.