Asking Questions in English

Rules & Explanations
WH-words help us ask questions about different things:
Who - Asks about a person (subject). Example: Who is your teacher?
Whom - Asks about a person (object of the verb). Example: Whom did you invite?
Whose - Asks about possession. Example: Whose phone is this?
What - Asks for information about things. Example: What is your name?
Which - Asks for a specific choice. Example: Which book do you want?
Where - Asks about a place. Example: Where do you live?
When - Asks about time. Example: When is your birthday?
Why - Asks about reasons. Example: Why are you late?
How - Asks about manner or method. Example: How do you study?

Important Rules:
''Whom'' is less common in modern English and is usually replaced by ''who'' in casual speech.
WH-words go at the beginning of a question.
Use ''do'' or ''does'' in the present simple when there is no ''be'' verb.
Example: Where does he live? (Not: Where he live?)
WH-questions cannot be answered with ''yes'' or ''no'' because they require specific information.