神马品牌网互联网运营视频教程:英语翻译: 正在忙于.....
来源：百度文库 编辑：神马品牌网 时间：2024/06/01 06:02:07
be busy doing sth.
be busy with sth.
be busy doing sth.
be busy doing sth
be busy with sth
I am busy doing my homework right now.
He is busy with his project.
busy with : To forget his troubles,he busied himself with answering letters.
为了忘掉烦恼，他忙于写回信。