The main interrogative pronouns are: who, whom, whose, which, and what. (Whoever, whomever, whichever, and whatever can also be interrogative pronouns.)
Interrogative pronouns are used to ask questions. (The interrogative pronoun represents the thing that the question is about.)
Examples of Interrogative Pronouns
Here are some examples of interrogative pronouns (shaded):
· Who won the race?
· Whom shall we ask?
· Whose did they take?
· Which is the greater?
· What is that?
Now look at this question:
· Which feat is the greater?
(This is not an interrogative pronoun. It is an interrogative adjective. The word Which modifies feat. Therefore, it's an adjective.)
Interrogative Pronouns Ending –ever
The interrogative pronouns with the suffix -ever are used for emphasis or to show surprise. They are quite rare. For example:
· Whoever would want to eat such a gross thing?
· Whatever did you say?