英语疑问词 “what” 和 “which” 用于正确引导疑问句，但由他们正确引导的疑问句中间有一个压根的差别。哪一个词用于正确引导有挑选的一般疑问句？哪一个词正确引导的疑问句，其回答不会受到一切限定？

如何区别 what 和 which?

1 What is used to ask a question which has a lot of possible answers.

用 “what” 正确引导的一般疑问句的回应沒有限定，有很多种多样很有可能。What do you want to eat for lunch?

Here, there are no choices to limit your reply. You could choose anything you want.

这个问题的回应沒有限定，能够依据自身的爱好做答。

2 We use which when we have options to choose from.

当提出问题有挑选时，用 “which” 正确引导一般疑问句。

So, here we have two choices – a sandwich and a melon. So I can say:

例如：是我2个挑选，挑选一：三明治，挑选二：瓜 。这时候就可以问：

Which do you want to eat? The sandwich or the melon?