查询词典 have trouble doing sth.

Be busy with /be busy doing sth.

忙于做某事

B. be busy doing sth.

忙着做…。

Be busy doing 和 be busy with sth.

都表示忙于做某事

Be busy with / doing sth.

忙于做某事

The words in the envelop be busy doing sth.

忙着做某事

A be busy doing sth.

忙于做某事。

D词组be busy doing sth.

意思是"忙于做某事"。

Busy,be busy in,be busy with和be busy doing sth.

busy用作形容词表示"忙，忙的"。

Be构成的短语 be able to do… be about to do… be afraid of be afraid to do… be busy with sth. be busy doing… be fit for be fit

本份教案以基础一般学生为授课对象，注重基础培养和能力拓展并重，也是对新课程的一种尝试。

Be/get busy doing/ with sth.

忙于作某事

You think you're a big shot.

你认为你是一个大人物？

All states are equal, and none can receive special treatment from the federal government.

所有的州都是平等的，任何州都不能获得联邦政府的特别待遇。