I should warn you again that I'm very likely to make mistakes when I'm doing this kind of thing, so please catch me I do.

我还得提醒一下大家,我总算错,如果发现错误请马上指出

耶鲁公开课 - 博弈论课程节选

You say "Let me" to say "Please, allow me.", "Please allow me to do this."

你用“Let me”来表达“请允许我”，“请允许我做这件事。”，

Let me 课堂 - SpeakingMax英语口语达人

I say,No,no! Please don't do it to me!

我说不要，请不要那样做！

耶鲁公开课 - 死亡课程节选