I had cleared my desk before I left.

离开前我清理干净了办公桌。

《牛津词典》

Remind me to phone Alan before I go out.

提醒我在出去之前给艾伦打电话。

《牛津词典》

I could drive a car before I left school.

我在中学毕业前就会开车了。

《牛津词典》

He said,"I think I have written a lot and sent it off to be printed before I realized strangers might read it."

VOA: special.2010.01.10

I had not really had a conversation with a person who was out as lesbian or gay before I was in college.

在上大学以前,我从未真正地和一个,出柜的同性恋谈过话。

普林斯顿公开课 - 人性课程节选

What in the world does that have to do with my divisor example? Well, actually, before I do that let me in fact fill in a piece here.

那么这到底跟我的除数的例子有什么关系呢？,好，实际上，在我讲之前请我先来补充一点，大家还记得我说过,我们可以概念上认为。

麻省理工公开课 - 计算机科学及编程导论课程节选

Before I was with Logitech, I spent a long time at Eastman Kodak .

FORBES: What I Learned From Jack Welch

But before I ever made it to the trail, I witnessed a fatal road accident.

BBC: Nepal's year-round trekking route

Mr. RONALD REAGAN (Actor): (As Professor Boyd) Bonzo, you get down before I tan your hide.

NPR: Fred Thompson: Senator vs. Actor