指人：who，whom，whose，whoever，whomever
指物：what，whatever
既指人又可指物：which，whichever
小伙伴们，when, where, how, why等引导特殊疑问句的词语，我们称之为“疑问副词”，所以别搞糊涂了!
一般而言，疑问代词在句中位于谓语动词之前，没有性和数的变化，除who之外也没有宾格的变化(whom)。除此以外，我们还需要注意以下几点：
1. who通常作主语和表语，whom作宾语：
主语：Who is speaking? 是哪一位(打电话)?
表语：Who is she? 她是谁?
宾语：Who(m) are you looking for? 你在找谁?
2. what，whose，which可以用作主语、表语、宾语和定语。(此处还可以理解为，它们对句子中所提问的成分，就是它们所担当的成分)。当然，它们还可引导名词性从句：
主语：What happened later? 后来发生什么事情了?
Whose is broken? 谁的坏了?
Which is yours? 哪个是你的?
表语：What’s you mother? 你妈妈是做什么工作的?
Whose is this book? 这本书是谁的?
宾语：What do you mean? 你是什么意思?
Which do you want? 你想要哪一个?
Whose do you prefer? 你更喜欢谁的?
定语：What time is it now? 现在几点了?
Which book do you want? 你想要哪一本书?
Whose dress is this? 这是谁的连衣裙?
从句：They have done what they can do. 他们已经尽其所能。
Do you know whose is the book on the table? 你知道桌上的书是谁的吗?
Can you tell me which he will choose? 你能告诉我他会选择哪一个吗?
3. whatever，whoever，whichever，whomever用法如下：
(1)引导状语从句：意为“无论什么(是谁、哪一个)”等，此时相当于 no matter what (who, which, whom)。(其中whomever在现代英语已基本不用)。
Whatever [No matter what] happens, keep calm. 无论发生什么，都要保持镇定。
Whoever [No matter who] you are, I will help you. 不管你是谁，我都会帮你的。
Whichever [No matter which] you choose, I’ll agree with you. 无论你选择哪一个，我都没意见。
(2)引导名词性从句：主语从句或宾语从句。
He does whatever his mother asks him to do. 妈妈要他做什么，他就做什么。
Whoever comes here will be welcome. 到这儿的人都受欢迎。
Whichever gains the most points wins. 得分高者胜。
