I was about to leave when Mark arrived. 马克到的时候我刚要走。
She looked as if she was about to cry. 她看上去好像马上就要哭出来了。
He sensed that something was about to happen.
I was just about to borrow some money from Dad when finally the cheque arrived.
The train's about to leave. Hurry up!
I was about to phone Joe at work when he walked into the house.
See also: about adjective (INTENDING)