Let’s start with a simple question! What are pronouns? Pronouns are words that replace nouns and noun phrases! So, what are “Interrogative pronouns?” They are words used to ask questions! In simple terms, there are just five “main” interrogative pronouns. They are “Who, whom, whose, which and what.” Add the words “Whoever, whomever, whichever and whatever and now you have created “Compound interrogative pronouns!” They are often used to show emphasis or surprise. Of course, the main interrogative pronouns can do the same thing in spoken English!