今天比昨天热有几种说法呀?it is hotter today than it was yesterday.today

两种都可以吖.
应该基本上就这两种比较常用了.
或者你可以说分句.
Yester was hot.It is much hotter today.
It was hot yesterday,but today is much hotter.
不过还是你的比较简洁啦~~