It's windy day (改为反意疑问句）

网友回答

It's windy day,isn't it?
======以下答案可供参考======
供参考答案1:
It's windy day, isn't it?这样就可以了呵呵 要是前面有are的句子就把isn't换aren't
供参考答案2:
原句似乎应该说It's a windy day.吧？
改为反意疑问句为：It's a windy day,isn't it?