busy的用法(busy一般后面跟todo还是doing啊)

Busy后面跟doing。Busy是形容词，它组成的短语用法有be doing something 表示忙于做某事相当于be busy with something。它的名词是business，表示的意思是生意，商业，事务。如，He will go to Beijing on business for three days.他要去北京出差三天。

It's none of your business.不管你的事儿。

He wants to do business when he grows up.他长大想做生意。