Как по Английски будет 哪一个

interrogative pronoun & determiner

Asking for information specifying one or more people or things from a definite set.

Примеры использования:

Which are the best varieties of grapes for long keeping?

relative pronoun & determiner

Used referring to something previously mentioned when introducing a clause giving further information.

Примеры использования:

A conference in vienna which ended on friday

pronoun

(used in questions and statements having a limited number of possibilities) what one or ones

Примеры использования:

Which train do you want to take – the one in the morning or the one in the afternoon?, she had trou…