about to do something

intending to do something or close to doing something very soon

想要，就要（做某事）

the ceremony was about to begin.

儀式就要開始了。

be not about to do something

be unwilling to do something

不愿意（做某事）

he is not about to step down after so long.

這么久了他還不想下臺。

be on about how about just about

he is not about to step down after so long.

這么久了他還不想下臺。

know what one is about what about

(informal)be aware of the implications of one's actions or of a situation, and of how best to deal with them

(非正式)明白，知道，心中有數(shù)