结构上略有变化：
一、由感叹词what引导的感叹句.
1.① What+a(an)+（形容词）+单数可数名词+主语+谓语!
② What+名词词组+主语+谓语!
如: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!
如:What kind women they are!
What nice music it is!
二、由How引导的感叹句.（how用来修饰形容词、副词或动词.）
1.How+形容词（副词）+主语+谓语!
如:How hard the workers are working!
How clever the girl is!
How quickly the boy is writing!
2.How+主语+谓语!
如：How time flies!时光飞逝!
3.How+形容词+a/an +名词单数+主语+谓语!
如：How clearly he is speaking!
