be busy 后面加动词的ing形式,即doing形式

be busy doing sth;忙于做某事;be busy with sth;忙于某事; busy后面如果+动词,则要用动名词形式,即be busy doing sth. 忙于做某事.若是直接加名次,则用介词with链接.即be busy with sth.

doing

be busy 后面加动词的ing形式,即doing形式

be busy doingbe busy with sth.

busy前面应该有be动词,be busy doing是个固定搭配,就是忙于什么事,比如I 'm busy doing homework意思就是我正忙于写作业

跟动词的动名词就是ing形式,名词,或是busy withim busy doing my job我忙着工作

你好!be busy doing 只能加动词的进行时仅代表个人观点,不喜勿喷,谢谢.

对.be busy doing sth.忙于做…但也有be busy with(at/about) sth.的表达.

busy 本身可以作形容词,也可以作动词.例如:He is very busy .(形容词)He busied himself with studies .(动词)