2012北大医学部同等学力申硕英语词汇语法精讲
疑问代词：用来提出问题的代词称为疑问代词。
1、who、whom、whose、what、which、whoever、whatever、whichever主要用于特殊疑问句中,一般放在句首。口语中也常用who代替whom作宾语,但在介词后则只能用whom。
如：Who(m) did you invite to your birthday party?(你都邀请了谁参加你的生日聚会的？)
What does she want to be when she grows up?(她长大了想干什么？医.学.全.在.线.网.站.提供
2、who 和whom只能独立使用,其中who可以作句子的主语、表语或动词的宾语,whom只能作谓语动词的宾语；而what、which、whose等既可以独立使用作主语、表语和宾语,也可以与名词构成疑问短语。
如：Who is that man?(那男的是谁？)
What colour are their hats?(他们的帽子是什么颜色？)
Which car was made in Germany?(哪辆车是德国造的？)(被动句)
注意这个提问：The man in the car is my father.(车里的男人是我父亲)
→Which man is your father?(哪个男人是你的父亲？)
3、which除了可以询问指代的情况之外,还可以针对说明人物的时间、地点、岁数、颜色、大小、状况等进行提问。
如：People there live a very sad life.(那里的人生活凄惨)
→Which people live a sad life? (哪些人生活凄惨？医学全.在线提供)
--Which hotel have you booked for your holiday?(为了度假你预订了哪家旅馆？)
→The biggest one in Haikou.(海口最大的那家旅馆)
4、疑问代词不分单复数,视它所替代的人或事物决定单复数,但是通常用单数；如果修饰名词,则以名词的单复数为准。
如：Who is (are) in that playhouse?(谁在游戏房里？)
What is that? (那是什么？)
What are those? (那些是什么？)
What colors do they have?(它们有哪些颜色？)
