1. What + a + adj. + 单数名词(+主谓)!What a good book It is!
2. What + adj. + 复数名词(+主谓)! What good books they are!
3. What + adj. +
不可数名词(+主谓)! What good food it is!
4. How + adj./adv. (+主谓)! How good (the book is)! How fast he runs!
5. How + adj. + a + 单数名词 (+主谓)!How good a book it is!
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