busy作形容词，意为“忙碌的；无暇的”。反义词为free，意为“空闲的”。其常用结构为1. be busy doing sth. 忙于做某事2. be busy with sth.忙于某事。3. be busy in doing sth, in可以省略。
He is busy at work.
他忙着工作。
Jean is busy with her work.
琼忙于自己的工作。
I am busy writing a novel.
我正忙于写小说。
水利万物而不争,
而万物莫能与之争。
