We use who to ask questions about people:
Who is that?
Who lives here?
Who did you see?
Who lives here?
Who did you see?
We use whose to ask about possession:
Whose coat is this? [or] Whose is this coat?
Whose book is that? [or] Whose is that book?
Whose bags are those? [or] Whose are those bags?
Whose book is that? [or] Whose is that book?
Whose bags are those? [or] Whose are those bags?
We use what to ask questions about things:
What is that?
What do you want?
What do you want?
We use which to ask someone to choose something:
Which came first, the chicken or the egg?
I’ve got two books. Which do you want?
I’ve got two books. Which do you want?
We can also use what and which with nouns:
What subjects did you study at school?
What newspaper do you read?
Which newspaper do you read – the Times or the Guardian?
Which book do you want?
Which one is yours?
What newspaper do you read?
Which newspaper do you read – the Times or the Guardian?
Which book do you want?
Which one is yours?
Questions with prepositions:
Questions ending in prepositions are very common in English. After Who, Which or What we often have a preposition at the end of the sentence:
Who does this book belong to?
What are you looking for?
Which university did you go to?
What country do you come from?
What are you looking for?
Which university did you go to?
What country do you come from?
