Others could do it better.

别人可以做得更好。

There was nothing he could do.

他无能为力。

It would be so exciting if I could do that.

如果我能做到，那将是非常令人兴奋的。

Maybe you could do more jobs around the house.

也许你可以在家里多做些工作。

You could do this by putting an explanation in brackets.

你可以通过在括号中加入解释来做到这一点。

What did the TV show say the special water could do?

电视节目说这种特殊的水能做什么？

There was not much that we could do when it was raining.

下雨时我们无能为力。

They were very sorry, but there was nothing they could do.

他们非常抱歉，但他们无能为力。

The second group was learning that they could do better if they kept trying.

第二组学生认为如果继续努力，他们会做得更好。

After helping clean the window, he looked across the room to see if there was anything else he could do.

帮忙擦窗户后，他环顾房间看看还有什么可以做的。