1.What an apple this is!What a fine day it is!
2.What kind women they are!What nice music it is!
3.How hard the workers are working!
What+a(an)+（形容词）+单数可数名词+主语+谓语!或是：What+名词词组+主语+谓语!
What+(形容词）+可数名词复数或不可数名词+主语+谓语!
由How引导的感叹句.
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!
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