Before是表示过去,应用于过去完成时态。
例句：
He paused before answering.
他在回答前停了下来。
Hopefully, well arrive before dark.
我们有望在天黑前到达。
扩展资料
It was many years before the full story was made public.
许多年之后，事情的.全貌才公之于众。
We will study the report carefully before making a decision.
我们将认真研究这份报告，然后再作决定。
I'd like a second opinion before I make a decision.
我在作决定之前，想听听别人的意见。
