如果想问 "Why is something how it is?"，可以用 "Why is something the way it is?" 或 "What's the reason for something being the way it is?" 表示。这是一个通用的问句，用于询问事物的原因或情况。

举个例子：

Why is the sky blue?
What's the reason for the traffic jam on the highway?

其中，"Why" 和 "What's the reason for" 都是询问原因的常用方式。