作业帮be busy with doing 和be busy in doing 在用法上有何区别如题
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/03 15:02:09
be busy with doing 和be busy in doing 在用法上有何区别如题
be busy with doing 和be busy in doing 在用法上有何区别如题
be busy with doing 和be busy in doing 在用法上有何区别如题
be busy with 后直接接名词；而be busy in 后接doing