beforehand, in advance
怎么事前没有告诉我？
Why wasn't I told beforehand?
— 色‧戒 (2007)
他们进入我的身体，做了些我几乎无法理解的事，事前也没问我愿不愿意。
They entered my body and did things I could barely understand without asking beforehand whether I was willing.
你也知道，行动事前是保密的
You know too that the operation was kept secret beforehand.
— 无间道 (2002)
在我做好事前准备之前要好好做事哦
Be sure to do your work well before I get ready to do good deeds.
— 鬼灭之刃：无限列车篇 (2020)