Have you not heard ignorance is bliss?

你就没有听说过，无知是福吗？

youdao

Have you not heard the blissful news?

难道没听到好消息？

youdao

Have you not heard me say that from his earliest hours he was destined for his cousin?

难道你没有听见我说过，他一生下来，就注定了要跟他表妹成亲的吗？

youdao

Now it's possible somebody said both these sentences before, but you probably have not heard them.

有可能某人曾说过这两句话,可你们却并没听到过

耶鲁公开课 - 心理学导论课程节选

But whatever your reason for being here this is in fact our introduction to Computer Science; and contrary to what you might have heard or seen or perceived in high school, odds are computer science is not quite what you imagined it to be.

但是不管你们来这儿的原因是什么,这门课介绍的都是计算机科学,可能与你们平时听到的看到的,或者在高中时所想象的恰好相反,计算机技术的优势完全不是你想象的那样。

哈佛公开课 - 计算机科学课程节选

Have you not heard the appalling racial slurs that are thrown at Asian and black players on football pitches?

BBC: Bend it Like Beckham: Your views

Are you saying you have not heard any reports like that, that allies are concerned that it's taking so long?

WHITEHOUSE: Press Briefing

There will be other ideas that you have not heard.

WHITEHOUSE: Press Briefing