(be about to do something)
I was about to leave when Mark arrived.
Я собирался уходить, когда приехал Марк.
She looked as if she was about to cry.
Она выглядела так, словно вот-вот заплачет.
Синонимы
to be going to
to be on the verge of
to be on the point of
to be ready to
to be set to
to be poised to
Антонимы
to be unlikely to
to be far from
to have just finished
to have no intention of