How 的用法
1、How+形容词+主语+谓语!How pretty she is!
2、How+副词+主语+谓语!How slowly he runs!
What的用法
1、What+a/an+形容词+可数名词单数+主语+谓语!
What a clever boy he is!
2、What+形容词+可数名词复数形式+主语+谓语!
What wonderful ideas (we have)!
3、What+形容词+不可数名词+主语+谓语!
What cold weather it is!
So和such 的用法
so+形容词+a/an+名词：So beautiful a girl !
such＋a/an+形容词+名词 Such a beautiful girl!