If he doesn't want to be involved, then so be it.

要是他不想参与，那就随他的便好了。

《牛津词典》

Tell him the truth if you want to, but on your own head be it!

你想把真相告诉他就告诉他吧，但后果自负。

《牛津词典》

Far be it from me to interfere in your affairs but I would like to give you just one piece of advice.

我绝不想干涉你的事，我只不过想给你一个忠告。

《牛津词典》

We thought that that would be it." But the day after the fire, the mayor of the District of Columbia, Adrian Fenty,took action.

VOA: special.2009.08.21

An ear and an appetite for these sounds of sense is the first qualification of a writer, be it of prose or verse.

这些感性的声音的耳朵和胃口,是作家最基本的素质，不论是写散文还是诗歌。

耶鲁公开课 - 现代诗歌课程节选

so if somebody wants to spend the money to improve their appearance then so be it .

所以，如果有人要花钱改善自己的形象，那就让他们那么做吧。

整容是个人自由 - SpeakingMax英语口语达人

Elberse only followed commercial videos, those connected with some product, be it a movie or videogame.

FORBES: It Takes Money To Make Money: How The New "Social" Media Is Like The Old "Media" Media

And if that leaves him with three times the disappointment late Saturday evening, so be it.

WSJ: Lukas seeks 3 times the fun in Preakness

The US wants a fresh start, but if one is not forthcoming, then so be it.

BBC: A summit of limited expectations