Do not you know?

岂非你不知道吗？

youdao

Do not you know that Mr. Collins wants to marry Lizzy?

你不知道柯林斯先生要娶丽萃吗？

youdao

I don't know. Correction—I do know, but I'm not going to tell you.

我不知道。不，我知道不假，但不打算告诉你。

《牛津词典》

Montclin did not move. "You know as well as I do that it is no use to tell Athnaise anything,"

VOA: special.2009.06.27

But, you know why not do something a little special, little different, and they decided instead to use lithium.

但是你懂的，为什么不做的更特殊，更与众不同一些呢？

麻省理工公开课 - 化学原理课程节选

Usually when you know why it's not working, it's obvious what you have to do to make it work.

通常你明白了出错的原因后，很明显你必须让程序正常运行起来。

麻省理工公开课 - 计算机科学及编程导论课程节选

Please do not insult my husband because you do not know him and his family and friends are doing everything in their power to fight back!!

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Here is that secret first step: If you have no experience selling anything to Chinese people or organizations in actual China, admit that you do not know what you are doing.

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Although you do not know the exact outcome of your action, you KNOW that certain choices will have a better impact than others.

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