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English definition of “which”

which

determiner, pronoun (QUESTION)    /wɪtʃ/
A1 (used in questions and structures in which there is a fixed or limited set of answers or possibilities ) what one or ones : Which party would you prefer to go to - Anna's or Ian's ? Which doctor did you see - Sewards? Which time suits you better - 12.30 or one o'clock? "Jacinta was there with her boyfriend ." "Which one? She's got several." Which is mine? The smaller one? See if you can guess which one is me in my old school photo . It's either Spanish or Portuguese that she speaks , but I've forgotten which. Which of the desserts did you have? Which of your parents do you feel closer to?Question words and expressions Grammar:Questions: interrogative pronouns (what, who)We use interrogative pronouns to ask questions. They are: who, which, whom, what and whose. These are also known as wh-words. Questions using these are called wh-questions:Grammar:Interrogative pronouns: usesWe use who and whom on their own:Grammar:WhichWhich is a wh-word. We use which to ask questions and to introduce relative clauses.Grammar:Which as a question wordWe use which in questions as a determiner and interrogative pronoun to ask for specific information:Grammar:Which in relative clausesWe use which in relative clauses to refer to animals and to things:Grammar:Which + ofWe use of with which before other determiners (the, those, your) and pronouns (yours, them):
(Definition of which determinerpronoun (QUESTION) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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