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'd like to be your friend, too.
我也想成为你的朋友。
I turned off when they started talking about computers.
当他们谈论计算机时，我失去了兴趣。
Oh, by the way, there was a telephone call for you.
啊，顺便说一句，有你一个电话。