I don't know what I've done to upset him, but if looks could kill...

我不知道做了什么惹他生气了，他那样子简直吓死人。

《牛津词典》

And again, notice what I've done.

再一次看看我们做了什么。

youdao

I regret what I've done.

我为我所做的一切感到抱歉。

youdao

That I'll leave no stone unturned, and that I'm able to go to sleep at night with no regrets at what I've done."

VOA: special.2009.12.28

What I've done is imagine a case in which the personality functioning stops before the rest of the body functioning stops.

现在我要做的只是想象一个,人格功能在生理功能停止前停止的例子。

耶鲁公开课 - 死亡课程节选

This is what I've done, if you hear about anything, I'm looking for a job..."

这是我做的东西，如果你听说了什么，那就是，我正在找工作……”

就业的方法 - SpeakingMax英语口语达人

Five minutes later, the little Michelangelo was back saying, "Daddy, look what I've done!"

CNN: AllPolitics - State Of The Union Response Transcript, 1997

And what I've done is I've said to the Republicans, show me what you've got.

WHITEHOUSE: President Obama Holds a Town Hall in New Hampshire

Because everywhere I go now people respect me for doing what I've done'.

BBC: News - Today - Concerns raised over Olympics 'legacy'