If they have never done something before, they are eager to test the waters.

如果他们以前从未做过某事，他们会急于试水。

youdao

Something ought to have been done before now.

先前就该采取措施了。

《牛津词典》

The man must have done something right, more right than all jumpers before.

这个人一定是做了些很对的事，比所有以前跳高的做得更对。

youdao

"I'm doing something for them that never has been done for them before."

VOA: special.2010.05.13

when you've never done something before.

当你从来没有做过这些事情之前。

关于创业的全部 - SpeakingMax英语口语达人

It's something that I wouldn't have done before.

我以前从来不会这么做的。

麻省理工公开课 - 媒体、教育、市场课程节选

As a rule, it's better to hire people who've done something similar before, Khurana says, basing his conclusion on a study of 1, 300 management changes over 17 years.

FORBES: Magazine Article

Two thirds of the cancer survivors surveyed said they had done something they never done before after being diagnosed.

BBC: Cancer 'changes outlook on life'

The bill has been passed by -- a bill has been passed by the House and I anticipate that energy legislation will be taken up some time over the course of the next several weeks in the Senate, and hopefully we can get something done before Congress adjourns this year.

WHITEHOUSE: Press Briefing