be about to do sth的用法

问题描述:

be about to do sth的用法

打算做什么..

将来时态的一种形式,表示不久的将来将会发生某事,如:
I feel that something terrible is about to happen.

be about to do:表即将做某事.
e.g The plane is about to take off.
但不能与时间状语连用,不能说
I am about to do my homework tomorrow.
只能和when从句连用
I was about to do my homework when my father came in.