I did not know Jamie had a knife.

我不知道杰米有把刀。

《柯林斯英汉双解大词典》

He did not know how he ought to behave.

他不知道自己应该怎样表现。

《牛津词典》

They did not know whither they should go.

他们不知何去何从。

《牛津词典》

"Aylmer," said Georgiana, "I do not know what the cost would be to both of us to remove this birthmark.

VOA: special.2009.09.26

You might not know have any symptoms, you might just have a latent source of the microorganism somewhere in your body.

你可能没有任何症状,微生物可能只是在体内某处,暗中不断滋生

耶鲁公开课 - 生物医学工程探索课程节选

I was trying to find it but I did not know where I should look.

我试图自己找到这个银行，但不知从何找起。

Is there 课堂 - SpeakingMax英语口语达人

However the market does not know the net amount that is owed to which party and when.

FORBES: Briefing Book: A. Michael Lipper

It was as if the animals did not know how to cope with their new found freedom.

BBC: Lab chimps successfully treated with anti-depressants

An answer of "I do not know" is unacceptable and I could only get insurance on nominating one.

BBC: NEWS | Programmes | Inside Money | Have your say: insurance 'fronting'