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English definition of “which”


pronoun (USED TO REFER)    /wɪtʃ/
A2 used as the subject or object of a verb to show what thing or things you are referring to, or to add information about the thing just mentioned . It is usually used for things, not people : These are principles which we all believe in. You know that little Italian restaurant - the one which I mentioned in my letter ? Is that the film in which he kills his mother ? The death of his son was an experience from which he never fully recovered . It isn't a subject to which I devote a great deal of thought .Relative forms 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:Relative pronounsRelative pronouns introduce relative clauses. The most common relative pronouns are who, whom, whose, which, that. The relative pronoun we use depends on what we are referring to and the type of relative clause.Grammar:Relative pronouns: whichWe use which in relative clauses to refer to animals and to things. We use it to introduce defining and non-defining relative clauses. We always use which to introduce relative clauses when they refer to a whole sentence or clause:Grammar:No relative pronounIn informal styles, we often leave out the relative pronoun. We only do this in defining relative clauses, and when the relative pronoun is the object of the verb. We don’t leave out the relative pronoun when it is the subject of the verb nor in non-defining relative clauses:Grammar:Relative pronouns: typical errorsGrammar: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 pronoun (USED TO REFER) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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