1、What+a(an)+（形容词）+单数可数名词+主语+谓语！如：

Whatanapplethisis!

Whatafinedayitis!

2、What+(形容词）+可数名词复数或不可数名词+主语+谓语！

Whatkindwomentheyare!

Whatnicemusicitis!

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！

Howhardtheworkerareworking!