1、What+a(an)+（形容词）+单数可数名词+主语+谓语！如：

What an apple this is!

What a fine day it is!

2、What+(形容词）+可数名词复数或不可数名词+主语+谓语！

What kind women they are!

What nice music it is!

3、how用来修饰形容词、副词或动词。其结构是：How+形容词（副词）+主语+谓语！

How hard the worker are working!