which/wɪtʃ/

1.adjective

(interrogative singular) 哪个

2.adjective

(plural) 哪些

which picture do you want?
你要哪幅画?
which books are yours?
哪些书是你的?
which one/ones?
哪个/些?
which one of you did it?
你们中的哪个人做的?
3.adjective

(in indirect questions/speech singular) 哪个

4.adjective

(plural) 哪些

he asked which book I wanted
他问我要哪本书
5.adjective

in which case (relative) 在这种情况下

by which time
到那时为止
6.pronoun

(interrogative subject,object) 哪个

which of these is yours?
这些中的哪个是你的?
which of you are coming?
你们中的哪些人会来?
which do you want?
你要哪个?
7.pronoun

(plural) 你要哪些?

8.pronoun

(in indirect questions/speech subject,object) 哪个

ask him which of the models is the best
问他哪种型号是最好的
tell me which you want
告诉我你要哪个
9.pronoun

(plural) 告诉我你要哪些

I don't mind which
哪个都行
10.pronoun

(relative subject,object) …的那个…

the shot which you heard/which killed him
你听到的那一枪/杀死他的那一枪
the chair on which you are sitting
你正坐着的那把椅子
he said he knew, which is true
他说他知道,事实的确如此
after which
在那以后