which

which
interrogative pronoun& determiner
  1. asking for information specifying one or more people or things from a definite set
    哪一个;哪一些
    [as pronoun]which are the best varieties of grapes for long keeping?.
    哪些葡萄品种最宜长期保存?。
    which of the suspects murdered him?.
    嫌疑犯中哪一个谋杀了他?。
    [as determiner]which way is the wind blowing?.
    风是往哪个方向刮的?。
relative pronoun& determiner
  1. used referring to something previously mentioned when introducing a clause giving further information
    那一个;那一些(用于引导定语从句)
    [as pronoun]a conference in Vienna which ended on Friday.
    星期五在维也纳闭幕的会议。
    [after prep.]it was a crisis for which he was totally unprepared.
    这是一场令他猝不及防的危机。
    [as determiner, after prep.]your claim ought to succeed, in which case the damages will be substantial.
    你的索赔应该会成功,如果是这样,赔偿金额会很大。
常用词组
which is which
  1. used when two or more people or things are difficult to distinguish from each other
    哪一个是哪一个;什么是什么
    there is no confusion as to which is which.
    哪个是哪个,不会混淆。
语源
  1. Old English hwilc, from the Germanic bases of who and alike
用法
  1. On the differences between which and that in relative clauses, see usage at that
英语宝典
考试词汇表