I don't know how bad the injury is, because I have never had one like this before.

我不知道伤势有多重，因为我以前从未受过这样的伤。

《柯林斯英汉双解大词典》

I like the sea but I have never seen the sea before.

我喜欢大海但以前从未看过。

youdao

Never have I thought or felt like this before!

我从未有过这样的想法和感受！

youdao

But before we'd do that I'd like to just have a quick discussion about your experience with the Daily Plate.

但是在我们讨论之前,我想对你们,所做的每日饮食记录做个简单说明

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So I was hoping to see more like 99% on this, but you do still have two more days before the exam.

我本来期待这道题的正确率能达到，99%，的，但毕竟你们距离考试还有两天的时间。

麻省理工公开课 - 化学原理课程节选

The build up to this Champions League final is like none I have seen before.

BBC: Fans are singing together in Rome

"I know there will be a backlash that I am going on this show, but I would like to point out that I have never before taken a week away in Parliamentary time whereas a lot of other MPs have, " she said.

BBC: Nadine Dorries prepares for I'm a Celebrity

When I was their age, I would have done my French homework before I'd have put on something like that.

CNN: From Our Correspondent: Merry Christmas, Uncle Ho