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
busy的用法（很重要（18）busy 用法）
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