Be busy doing sth 是更常见和常规的表达方式，表示在某个时间段内正在忙于做某事。 例如：i am busy doing my homework（我正忙着做作业）。 be busy to do sth 的用法相对较少，通. 三、引证用法不同 1、be busy in：busy用作形容词的基本意思是“忙的”，通常指人经常或暂时埋头于一项工作，含有“热衷于”的意味。 busy作“繁忙的; Be busy doing sth和be busy with sth 的区别是什么？ be busy doing sth和be busy with sth的区别为：指代不同、用法不同、侧重点不同一、指代不同1、be busy doing sth：忙于做某事。
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Be busy to do sth.和be busy doing的区别1、意思上的区别be busy doing：忙于做（某事 ）。 不是be busy to do sth，而是be too busy to do sth：太忙以至于不能做某事。
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