[It's a nice day,isn't it?Yes,it is.]It's a nice day,isn't it?Yes,it is.这是个什么样的句型?意思是什么?

[It's a nice day,isn't it?Yes,it is.]
It's a nice day,isn't it?Yes,it is.这是个什么样的句型?意思是什么?

反义疑问句,今天事一个好天气,是吗?是的

翻译疑问句 天气不错，是吗？--是的，不错