Things ain't what they used to be.

现在情况不比从前了。

《牛津词典》

He used to be one of my professors.

他过去是我的一个教授。

《柯林斯英汉双解大词典》

Standards aren't what they used to be.

现在的行为标准和过去不一样了。

《牛津词典》

There used to be a time when the quickest way to travel across the western United States was in a stagecoach.

VOA: special.2010.04.26

It used to be when I was in grad school that most people said, "Oh,it was written around the year 200."

当我读研究生的时候大多数人认为，它形成于主后两百年“

耶鲁公开课 - 新约课程节选

work is going from where it used to be 5 or 6 big companies in California, in San Francisco and LA.

过去的工作是由加州、旧金山和洛杉矶的五六个大公司来做，

经济危机和电影市场 - SpeakingMax英语口语达人

Going to America used to be a dream, he continues, but now, he figures, why bother?

FORBES: Hello brain. Good-bye rules.

More importantly, the country is much less vulnerable to external shocks than it used to be.

CNN: Does Brazil deserve its 'B' for BRIC?

That used to be the situation here for several years until the current surge in cases.

BBC: Long shadow cast by MMR scare