释义：

I can do 我能做的事情

do 与 can 相结合而成的表达。... ( that ) I can do 可以用来构成多种多样的表达。比如说，表示我已经做完我力所能及的事情，或还没做的事情了。

例句：

I did all I could do. I'll just wait and see.
我能做的都做了。剩下的就只有等结果了。
That's all I can do. Don't expect too much.
我已经尽全力了。期望值不要太高。
I just wanted to give you some gifts. It's the least I can do.
我只想给你份礼物。至少是我的诚意。
There's nothing more I can do.
我已经尽全力了。

对话：

A: Doctor, is my father going to die?医生，我爸爸会去世吗？
B: Yes. I did all I could do for him. 恩，我已经尽全力了。