题目内容：

what和how的用法区别
what fun it is to swim in the river in summer
为什么这里用what fun 而不是how funny,what funny,how fun?

优质解答

fun既可作形容词也可作名词,意为“有趣（的）”,funny 只作形容词,为“滑稽的,可笑的”.根据感叹句型,what＋名词,how＋形容词或副词,搞定!