Digging a well is hard work.hard work前为何不加冠词?A diamond is very hard.diamond前为何加a?

题目

Digging a well is hard work.hard work前为何不加冠词?A diamond is very hard.diamond前为何加a?

答案

hard work不可数,不可数名词前要么加the,要么什么都不加,加不加取决于整句话的意思.拿A diamond is very hard来说吧,diamond前加a,整句的意思就是泛指钻石这种东西很贵.如果加the,这句的意思就成了特指某颗钻石很贵....