这是我做过的最难的事情之一。

It was one of the hardest things I ever did.

《牛津词典》

我做过一些查询，但到头来却毫无结果。

I made a few enquiries, but nothing came of it in the end.

《牛津词典》

我做过护士助理，对死尸的模样很熟悉。

Having worked as an LPN, I knew well the appearance of a dead body.

《柯林斯英汉双解大词典》

With "Mowing" as the example, I said that in Frost, meaning is always something made, something the poet works on and works for.

用“割草“做例子，我说过对弗罗斯特来说，意义总是一些事情体现出的，是一些诗人一直致力于的，一直追求的。

耶鲁公开课 - 现代诗歌课程节选

This is definitely, probably one of the best things that I could have done. Just going to this university.

能进入这所大学肯定是我做过的最棒的事情之一。

寻找幸福 - SpeakingMax英语口语达人

So, please don't bring in your attorney if I didn't ask a question that's identical to one that you've worked.

因此请不要带你的律师来,如果我没有考的题目,和你做过的题目相同的话。

麻省理工公开课 - 固态化学导论课程节选