Be engaged in...
从事于..., 忙于...
🧩 词语组成解析
be
[bi]
v. 是;有，存在;做，成为;发生;
aux. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质;
engaged
[in'geidʒd]
adj. （指厕所等）有人用的;已订婚的;（指电话）占线的;忙碌的;
v. 与某人订婚;保证，约定;从事( engage的过去式和过去分词);吸引或引起（注意、兴趣等）;
🗣️ 情景例句
I have to run.
我得赶紧走了。
We have every reason to cancel the contract because you've failed to fulfil your part of it.
我们完全有理由取消合同，因为你们没有完成应遵守的合同内容，履行合同。
One day, he walked into an expensive shop after having been caught in a particularly heavy shower.
一天，他遇上一场瓢泼大雨，淋得透湿。