Main Interrogative Pronouns:
* Who: Used for persons (asking about the subject of the verb)
* Example: Who wrote this book?
* Whom: Used for persons (asking about the object of the verb or a preposition)
* Example: Whom did you see at the party?
* Whose: Used to show possession
* Example: Whose car is this?
* What: Used for things or actions
* Example: What are you doing?
* Which: Used to choose among options
* Example: Which shirt do you like?
* Why: Used to ask for a reason
* Example: Why did you leave early?
* When: Used to ask about time
* Example: When will you be home?
* Where: Used to ask about place
* Example: Where did you find this?
* How: Used to ask about manner or way
* Example: How did you do that?
Important Notes:
* "Who" and "Whom" can be tricky. Generally, "who" is used for the subject of a verb, while "whom" is used for the object. But in casual speech, "who" is often used in both cases.
* Interrogative pronouns can also be used in indirect questions.
* Example: I wonder who is going to the party.
Let me know if you would like more examples or have any other questions!