BE BUSY DOING STH 是主系表结构吗

be busy doing sth 例句 be busy in doing sth 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 with sth 与be busy doing sth 英语 翻译 be busy doing sth 有没有be busy with doing sth? 用be busy doing sth.句型造句 BE BUSY DOING STH 是主系表结构吗 jean is busy cooking in the kitchen是不是错句?不是be busy doing sth?为什么没有sth?be busy doing是谓语动词? be busy doing sth 与be busily doing的区别 是busy doing sth.还是busy to do sth. be busy doing sth/with sthbe busy doing sth 后跟动词be busy with sth 后跟名词麻烦谁能造个句子 各位帮我整理一些doing sth 的句型比如：be busy doing sth也可以是其他的，比如spend doing sth be busy doing sth和be busy with sth这两个句式的意思和用法 be busy with sth 与be busy doing sth的区别 be busy doing sth 和be busy to do sth 的区别