作业帮be busy in 的用法?它和be busy doing, be busy with有什么区别?
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be busy in 的用法?它和be busy doing, be busy with有什么区别?
be busy in 的用法?
它和be busy doing, be busy with有什么区别?
be busy in 的用法?它和be busy doing, be busy with有什么区别?
be busy doing sth.=be busy with sth.忙于做某事,如：I'm busy with my homework.=I'm busy doing my homework.with后面接事（sth.）,没有with的话后面要接做什么事（doing sth.）.
be busy with sth 忙于做某事
be busy （in）doing sth 忙于做某事
be busy doing 正在忙着做某事
be busy with 忙于做某事(不是指此刻）
be busy in 的用法?它和be busy doing, be busy with有什么区别?
be busy in 用法
be busy for的意思和用法
be busy doing 和 be busy in doing 的区别?
busy的用法be busy with后面加什么词be busy in doing与be busy with doing与be busy doing有什么区别
be busy (in) doing something 与be busy with something的用法重点是它们各自的用法和各自强调的是什么?
be busy doing sth和be busy with sth这两个句式的意思和用法
be busy doing sth和be busy with sth这两个句式的意思和用法,
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BE BUSY IN DOING 的例句
be busy with与be busy in二者的意思都是忙于（做）什么事情,那么它们在具体用法及意思上有什么区别?
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