to do：待办事项。动词不定式，为非谓语动词。在英语语法中，动词不定式是指动词中的一种不带词形变化从而不指示人称、数量、时态的一种形式。它之所以被称做不定式，是因为动词不被限定，或者说不被词形变化所局限。不定式于非谓语动词形式。

to do双语例句

I've told you time after time not to do that.

我一再告诉过你不要干那件事。

I have some work for you to do.

我有些事要你做。

There's only one sure way to do it.

做这件事只有一个保险的办法。

You don't want to do it like that.

你不应那样做。

It is not clear what they want us to do.

我们不肯定他们要我们做什么。