let us后面加什么?

例句：

You have to let us struggle for ourselves, even if we must die in the process.

你得让我们为自己拼搏，哪怕我们会在这个过程中死去。

Let us not cavil too much

我们就别太挑剔了。

Let us suppose another planet with conditions similar to those on the earth.

让我们假定另外有一个具有和地球上相似条件的行星。

Let us know if you come across anywhere that has something special to offer.

如果你碰上哪儿有什么特别的东西出售，就告诉我们。