1、 how much 表示“多少”，后面接不可数名词。How much milk do you have every month? 你每月要喝多少牛奶。

2、 how much 表示“多少”，指数学运算结果的总数。How much is 19 times 90? 19乘以90是多少。

3、 how much 表示程度。How much do you really want to marry him? 你到底有多想嫁给他。