英语中八大疑问词有：
一：疑问代词有四个：who (whom)， whose， what， which
who 作主语
whom作宾语
whose作定语
what作主语或者宾语
which作主语或者宾语或者定语
二：疑问副词有四个：when， where， why， how都是作状语。
例句：
1、Who called you yesterday?
2、Who/whom are you waiting for?
3、Whose book is this?
4、Which is bigger， the sun or the earth?
Which book is yours?
I don't know which to choose?
5、What makes you think I am a doctor?
6、What are you doing now?
7、When will you go shopping?
8、Where did you go last week?
9、Why are you late for the meeting again?
