“你说什么”用英语怎么说？

What did you say? 你说什么?
还是
What did you mean？ 你什么意思?
还是
What does you mean? 不通, 词病 (不能用does)

What did you say? 没听清时，可以这么说。但礼貌些的说法:I beg your pardon. I didn't catch your words.
What did you mean？也许对方表达的意思很隐晦，需要进一步解释。
What does you mean? 语法就有问题——What do you mean?

What do you mean?
这个比较好.

a