表达喜怒哀乐等强烈感情，句尾常用感叹号（!），语气用降调。
1）what + 名词或名词性短语
What a big garden (it is)!
What an interesting storybook (it is) !
What lovely weather (it is)!
What pretty girls (they are)!
2）how +形容词或副词＋主语＋动词
How nice!
How beautiful the flowers are!
How tall Yao Ming is!
。