It was a fine day yesterday.改为感叹句

问题描述:

It was a fine day yesterday.改为感叹句
What ( )( )weather it was yesterday

如果是将原题改成感叹句应该是:what a fine day it was yesterday!如果将day 变成weather ,则应该是What fine weather it was yesterday!因为weather是不可数名词,不能用a来修饰.