Be up to somebody to do sth.

该句型为该由某人做…

youdao

He was asked to pick somebody up and bring them to a party, not realizing it was a setup.

他被叫去开车接人并送他们到一个聚会，没意识到那是个圈套。

《柯林斯英汉双解大词典》

If somebody else tries to get my haircut, they just end up getting their own haircut.

如果有人试图剪我的头发，他们最后只能剪自己的头发。

youdao

We didn't have that in the eight-millimeter days. We had to lug a projector, we had to plug it in to somebody's wall, put up a screen and show it to someone patient enough to sit there for five minutes and watch.

VOA: special.2011.06.20

No, I think somebody had to make up a story, but the memory of kings was not of a Tarquinius.

我想总有人得编故事,而这传说中的国王并非一个,"塔克文"式的

耶鲁公开课 - 古希腊历史简介课程节选

At any rate, you're not using them and they're going to end up being used by somebody else.

无论如何,你不可能都用到它们,所以它们最终会被送给别人

耶鲁公开课 - 金融市场课程节选

And what they're counting on is that you get so discouraged by this, that at a certain point you just say, you know what, I'm going to leave it up to somebody else.

WHITEHOUSE: Remarks by the President at a Campaign Event -- Boulder, CO

To a particular kind of hyper-ambitious young person, entering into a domestic commitment too early carries a risk: what if you end up yoked to somebody who lacks the stamina to keep up?

NEWYORKER: The Disconnect

Maybe Tom Brady grows up to become somebody else.

WSJ: Tom Brady, Kurt Warner: Football, Fathers and the Future