English has five interrogative pronouns: who, whom, whose, what, and which.
|Pronoun||asking for / about …||Example|
|What … ?||general information||What’s your name?
What is your adress?
|Which … ?||limited choice||We have fruit tea and green tea – whichwould you like?|
|Who … ?||a person, a name||Who wrote War and Peace – was it Tolstoy?|
|Whose … ?||possession, owner||Whose is this pen? Is it yours or mine?|
|Whom … ? [formal]||a person, name||Whom did you ask?|
Whom is formal and is not used very often in spoken English. We prefer to use who in spoken English:
- Whom did you ask? [formal written, formal spoken English]
- Who did you ask? [standard spoken English]