be busy doing是busy的一个搭配,句子中is是谓语动词,busy是形容词,cooking是动名词我还是不太能理解cooking为什么要用动名词,是因为这是个固定搭配么,什么类型的固定搭配?

be busy doing 和 be busy in doing 的区别? be busy doing造句 busy的用法be busy with后面加什么词be busy in doing与be busy with doing与be busy doing有什么区别 be busy in 的用法?它和be busy doing, be busy with有什么区别? BE BUSY IN DOING 的例句 be+busy+doing=be+( )+( be busy doing sth 与be busily doing的区别 be busy with doing 与be busy doing 区别 be busy doing等于什么 be busy doing sth 例句 be busy in doing sth be busy doing 过去式+造句 类似be busy doing ,enjoy doing 的初中英语语法 he is always busy___ (work)是用be busy doing sth还是 be busy with sth 是be busy doing sth还是be busy to do sth? be busy加什么?be busy是接doing sth还是to do sth? be busy to do sth.和be busy doing的区别 be busy doing sth和be busy with sth这两个句式的意思和用法