◆to be in the middle of sth
+of process, job在…的进程中；正忙于…
He was always in the middle of a business transaction.他总是忙于做生意。
I can't talk. I'm in the middle of a meeting.我不方便说话, 我正在开会。
to be in the middle of doing sth正忙于做某事；正在做某事
It's a bit hectic. I'm in the middle of cooking for nine people.我正赶着做一顿9个人的饭, 有点忙不过来。
We're in the middle of renovating the house.我们正忙于翻修房子。