Question

what how感叹句用法的区别？

Answer 1

感叹句通常由what,how引导,表示赞美、惊叹、喜 悦、等感情.
what修饰名词,how 修饰形容词,副词或动词,感叹句结构主要有
How +形容词+ a/an +名词+ 陈述语序
How+形容词或副词+ 陈述语序
What +名词+ 陈述语序
What+a/an+形容词+名词+ 陈述语序
以下几种：
掌握它的搭配,即掌握了感叹句的重点.What+ 形容词+复数名词+ 陈述语序
What+ 形容词+不可数名词+ 陈述语序
How clever a boy he is!
How lovely the baby is!
What noise they are making!
What a clever boy he is!
What wonderful ideas (we have)!
What cold weather it is!

Answer 2

What的话是what加名词短语，how的话是how加形容词或副词在加主语加谓语动词。

Answer 3

What加a/an加形容词加名词
(加it is)
What a beautiful flower it is
What加形容词加不可数名词｜名词复数
What fine weather
What beautiful flowers