_____too much is bad for your health.(drink)

问题描述:

_____too much is bad for your health.(drink)
答案是Drinking,我想知道为什么不可以是祈使句呢?这个to do doing 和祈使句都在句首!有没有简单点的方法判别啊

因为这个句子中 drinking too much 做主语,is是谓语,后面是宾语
祈使句当中是动词原型开头,没有主语 Close the door please.