which one 是 which的扩展词组， 属于which的用法之一。
which one用于同类性质事物之间提问。
which one 意思是哪一个 ，一定是单数。
扩展资料
There are two points which I wanted to make.
我想要指出的有两点。
We are still friends， though， which is good.
不过我们仍然是朋友，这令人感到欣慰。
中文意思是，哪一个，是特殊疑问词which 表选择
例如
You should see which one you prefer， and you should be able to use one or the other on the exam.你应当想想你喜欢哪个，你在考试时可以用其中的一个。
But if there is no menu available and you do not know the difference between them， when a waiter or a waitress approaches you and asks you which one you prefer， you might feel puzzled and embarrassed.
which one 英[hwitʃ wʌn] 美[hwɪtʃ wʌn] [词典] 哪一个 [例句]Show me which one you like and I'll buy it for you.指给我看你喜欢哪个，我给你买。
