1. 疑問代詞的基本用法

疑問代詞有what, which, who, whom, whose等，主要用于引出特殊疑問句。what除可用來詢問人的身份外，一般指物;which可指人也可指物;who, whom, whose一般指人。

2. what與which的區(qū)別

一般說來，沒有一定的范圍時(shí)，用what，其意為“什么”;有一定范圍時(shí)，用which，其意為“(其中的)哪一個(gè)”。如：

What is the best book you’ve ever read? 你曾經(jīng)讀過的最好的書是哪本?

Which of these books is the best? 這些書哪一本最好?

3. 疑問代詞的綜合考查

在英語考試中有時(shí)命題者會(huì)將疑問代詞與其他知識(shí)點(diǎn)進(jìn)行綜合考查，如將疑問代詞與強(qiáng)調(diào)句結(jié)合起來考查。如：

— ________ that he manage to get the information?

—Oh, a friend of his helped him.

A. Where was it B. What was it

C. How was it D. Why was it

解析：答案選C。從四個(gè)選項(xiàng)來看，似乎只是考查疑問詞where, what, how, why的辨析與選擇，其實(shí)它還結(jié)合了強(qiáng)調(diào)句的知識(shí)進(jìn)行考查，根據(jù)答語中的 a friend of his helped him可知，問句問的是方式，故選how was it。