第1个回答 推荐于2016-04-21
be busy with doing sth 这个用法是错误的。
be busy with 的用法如下
它的意思是:忙于做某事
be busy with sth
或be busy (over) doing sth 其中over 可以省掉
be busy doing sth侧重于动作 sth 是名词哦· do是动词的形式
be busy with sth 侧重于状态
意思都一样,可以互换.
He is busy doing homework.=
He is busy with homework.