"On the other hand, you do have this strong push on tires and perhaps even steel on the trade front.

VOA: standard.2009.11.10

So it's worth knowing in a general way what you need to do to earn a good grade in discussion section and here the answer is, perhaps the obvious one, you need to participate.

现在值得让你们知道什么是你们要做的,去得到好的分数在课堂讨论并且答案是，也许最显然的一个是，你需要去参与。

耶鲁公开课 - 死亡课程节选

Or perhaps, you could be trying to explain that you don't know whether you can do something or not by a certain date.

又或者，你正在试图解释你没法确定你是否能在一个指定日期前做完某件事。

I don't know 课堂 - SpeakingMax英语口语达人

And perhaps that is pastoral in a way, going back to what you said, that I do think of myself in many ways as doing pastoral counseling, particularly in the most difficult circumstances when there's been a crisis, a death, a serious accident.

也许某种意义上这像是种牧师与受众，回到你刚才说的，很多时候我觉得自己,就是作为一个牧师指导学生，尤其是在极其困难的情况下,比如出现了危机，伤亡，或者严重事故。

普林斯顿公开课 - 人性课程节选

This is great when you want to express regret for something that you perhaps did not do.

当你想表达对一些过去没做成的事情感到后悔时，你可以使用这个句型。

I should have 课堂 - SpeakingMax英语口语达人