Don't you know it's rude to whisper?

难道你不知道窃窃私语是不礼貌的吗？

《牛津词典》

'Don't you know who I am?' she stormed.

“你不知道我是谁吗？”她怒喝道。

《牛津词典》

Don't you know where he is?

你们不知道他在哪儿吗？

youdao

Stay home. Don't you know your poor old mother sits there, night after night, waiting to hear your steps on the stairs?"

VOA: special.2009.07.19

Don't you know that? Don't you know that goddamn secret yet?

你们难道不知道那吗，你们还不知道这个秘密吗？

耶鲁公开课 - 1945年后的美国小说课程节选

So they've got these superhighways which is, I don't know if you've seen them, they are marked on in blue.

所以，他们修了这些高速路，我不知道你见过没有，他们被标成蓝色了。

伦敦的蓝色自行车 - SpeakingMax英语口语达人

"Dude, it's a band, don't you know anything about hardcore, " someone else said.

NPR: Excerpt: 'Estrellas y Rascacielos'

One of the main problems with looting is that if a site is undiscovered, you simply don't know what you don't know.

CNN: Opinion: Illegal antiquities trade funds terrorism

Don't you know that elephants are made of elements?

NPR: Serenading Science In A New Rock Album