Do you need say the "way?Need you say the "Why"?想表达

题目

Do you need say the "way?Need you say the "Why"?想表达
Do you need to say the "way?
Need you say the "Why"?
想表达 “你需要说'Why?”意思是“你没必要说“why””
这两句有对的吗?意思有什么不同?
也就是说 能不能用Need you 表示反问?有这种用法吗?

答案

不能吧 will you need to say why?