基本解释
which

pron.
哪个, 哪几个, ...的, ...那个

adj.
哪个

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基本解释
which

pron.
[疑问代词]哪一个; 哪些

[关系代词]那一个; 那一些

[连接代词]这(个), 那(个)

Which is the largest?
哪一个最大?
Which of you will go with me?
你们哪一个跟我一起去?
That is the parcel which came this morning.
那就是早上送来的包裹。
I said nothing, which made him still more angry.
我一声不响, 这就使他更加生气。
Choose which you like best.
选你最喜欢的吧。
习惯用语
which is which

哪一个是哪一个

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基本解释
which

adj., pron.
哪个

Which do you want?
你要哪个?
Which child knows the answer?
哪个孩子知道答案?
…的那个

the book which I like best
我最喜欢的那本书
(在‘,’号之后,用以说明‘,’号前的词)这个,那个

The river, which flows through London, is called the Thames.
这条流经伦敦的河叫泰晤士河。
(表示关系)这个

He changed his mind, which made me very angry.
他改变了主意,这使我很生气。
习惯用语
Which is which?

(指两者的区别)哪一个是哪一个?

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基本解释
which
哪个

例句
Which is which?
(指两者的区别)哪一个是哪一个?

Which team is which?
他们分别属于哪一个队的呢?

Can you tell which is which?
你能看得出哪是哪吗?

Thing which is important or which influence
重要的事或者会产生影响的事

Which class?
几等舱?