To think I was lying on a beach only the day before yesterday.

想想吧，就在前天，我还躺在海滩上呢。

《牛津词典》

The day before yesterday is Wednesday.

前天是星期三。

youdao

She reached Paris the day before yesterday.

她前天到达巴黎。

youdao

After a while, part of you is going to start asking, "Huh, say, it feels the same as it was yesterday, and the day before that and the day before that.

经过一段时间后，你会开始产生置疑，“原来和昨天的感觉一个样，和之前每一天的感觉都一样。

耶鲁公开课 - 死亡课程节选

"A colleague was killed the day before yesterday, something like 18 drivers are missing" complains one aid worker.

CNN: Schedule: World's Untold Stories

We began our visit the day before yesterday with an informal dinner with Secretary Clinton and Secretary Gates.

WHITEHOUSE: President Obama and President Karzai Press Availability

He has been described as the "day before yesterday's man" - and the rest of the convention does not do much better.

BBC: Analysis: EU gets down to business