第1个回答 2021-09-21
固定用法
Be busy doing something.
同义句是
Be busy with something.
如
He is very busy doing his homework.
他正忙于做作业。
同义句是
He is very busy with his homework.本回答被网友采纳
第2个回答 2021-12-12
He is very busy.这个句子的意思是,他很忙。如果是这个句子的后面加ing的时候,那就是he is very busy going shopping他忙着购物。
这是一个固定结构
be busy doing sth忙着做某事。本回答被网友采纳
第3个回答 2021-12-13
固定用法
be busy doing sth 忙于做某事
如
He is very busy doing his homework.
他忙于做作业。
同义句是
He is very busy with his homework.本回答被网友采纳
第4个回答 2021-09-20
这是非谓语的用法,be busy (in) doing sth忙于做某事,He is busy in doing housework. 他忙于做家务。