We use which in questions as a determiner and interrogative pronoun to ask for specific information:
- ‘Which car are we going in?’ he asked Alexander.
- Which museums did you visit?
- Which do you prefer? Lemon cake or carrot cake?
Which in relative clauses
We use which in relative clauses to refer to animals and to things:
We have seen a lot of changes which are good for business.
The cruise ship, which will depart from Liverpool for a fifteen-night Mediterranean cruise, returns to the Mersey on 29 September.
We also use which to introduce a relative clause when it refers to a whole clause or sentence:
She seemed more talkative than usual, which was because she was nervous.
People think I sit around drinking coffee all day. Which, of course, I do.
We often use which with prepositions. Some formal styles prefer to use a preposition before which rather than to leave the preposition ‘hanging’ at the end of the sentence:
There are several small ponds in which a variety of fish live. (or There are several small ponds which a variety of fish live in.)
Which + of
We use of with which before other determiners (the, those, your) and pronouns (yours, them):
- Which of the following features do you feel are important when choosing a house?
- Which of your sisters lives in Boston?
Exaples of questions beginning with "WHICH"