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.Whowhom 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?
