busy用法总结 busy的用法

busy的用法 busy用法总结
busy用法总结
be busy doing忙于做某事，动词用成v.ing
They are busy doing their homework.
他们正忙于做作业。
be busy with sth.忙于做某事，但with后跟名词或代词
They are busy with their homework.
他们正忙于做作业。
中考语法点：be 形 doing
be worth doing 值得做某事.......
be busy doing