1 What a /an (形容词) + 可数名词 (主语 谓语 其他成分）!
---------What a sunny day we have today!
2 What (形容词) + 不可数名词 (主语 谓语 其他成分）!
---------What good weather we have taday!
3 What (形容词) + 名词复数 (主语 谓语 其他成分）!
--------What good days we have here!
4 How + 形容词、副词原级 (主语 谓语 其他成分）!
--------How interesting these books are!
-------How carefully she works on her job!
5 How many / much / little / few (===表示数量的形容词) + 名词 (主语 谓语 其他成分）!
-------How much progress she has made in her schoolwork!