感叹句
由what,how引导的感叹句的构成形式、用法及区别
感叹句是表示喜、怒、哀、乐以及惊异等感情的句子.句末用感叹号“!”,读时用降调,感叹句往往由what或how引导,what修饰名词,how修饰形容词,副词或动词.
1.what引导的感叹句：
（1）what + a/an +形容词+单数可数名词+陈述句（主语+谓语）
What a beautiful city it is!
What an interesting story she told!
（2）what+形容词+复数可数名词/不可数名词+陈述句（主语+谓语）
What expensive watches they are!
What terrible weather it is!
2．How引导的感叹句：
（1）How+形容词/副词+陈述句（主语+谓语）
How cold it is!
How hard he works!
（2）How+陈述句（主语+谓语）
How he loves his son!
How I miss you!
（3）How+形容词+a/an+单数可数名词+陈述句（主语+谓语）
How tall a tree it is!
（4）上述两种感叹句可以互相转换.例如：
What a clever boy he is!→How clever the boy is!
What a cold day it is!→How cold it is!