我对告诉你这个很遗憾，但明天是你最后一天了。

I hate to tell you this, but tomorrow's your last day.

《柯林斯英汉双解大词典》

假如他知道这一切，我现在感到很遗憾，因为我从没告诉过他我是多么愧疚、多么不孝、多么悔恨。

If he did, I am sorry. I never told him how sorry I was, how unworthy I was, how I regretted it.

youdao

如果克洛斯想离开，我很遗憾，对我来说他是一个很好的人，同时也是一名优秀的球员，但我尊重他的决定。

I am very sorry if Carlos wants to leave because, for me, he is a good man and he’s a fantastic player but I respect his decision.

youdao

it's a pity that I'm going to die or die too soon, but at least I'm getting more than the average.

我死得太早是很遗憾，但至少我活得比平均寿命长。

耶鲁公开课 - 死亡课程节选

I'm sorry to say that this is the wrong answer.

我很遗憾地说这是。

麻省理工公开课 - 热力学与动力学课程节选