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busy的用法（很重要（18）busy 用法）

busy用法总结

be busy doing忙于做某事，动词用成v.ing

They are busy doing their homework.

他们正忙于做作业。

be busy with sth.忙于做某事，但with后跟名词或代词

They are busy with their homework.

他们正忙于做作业。

中考语法点：be+形+doing

be worth doing 值得做某事.......

be busy doing

关键词： busy的用法(很重要 busy