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1、My friends are busy preparing my birthday party.我的朋友们正忙于准备我的生日宴会。
2、后面接名词时可以将doing换成介词with,即be busy doing sth = be busy with sth.也可以说成My friends are busy with my birthday party. busy的两个短语是:be busy with +名词。
3、如:I am busy with my homework. be busy doing(in), in 可以省略。
4、如 I am busydoing (in) my homework. (帮你结合了一下) O(∩_∩)O~be busy in doing sth ,后面是加“动词ing ”形式,in 可以省去。
5、be busy with sth ,后面直接加“名词”。
6、意为某人忙于做某事。
7、eg:I am busy doing homework.(我忙于做作业)。
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