I never know what to expect from one day to the next.

一天又一天我不知道该期待什么。

《牛津词典》

I never know such a man.

我从不认识这样一个人。

youdao

I never know what the next tweet is going to be.

我从来不知到下条推特消息是什么。

youdao

So I've never felt like a minority because,as you know, minorities are never supposed to say anything unkind about one another."

VOA: special.2010.08.08

Here we go, the screen Is that the right ring? I never know.

让我把投影屏放下来,是按这个钮吗,我不太清楚

耶鲁公开课 - 1871年后的法国课程节选

It was the first time I actually I've never got into a church in my kind of modern Presbyterian church in Madison, you know in Wisconsin where I grew up.

那真的是我第一次感受到,我从来都没有在,麦迪逊去过现代的长老会教堂，你们知道吧，我是在威斯康星洲的麦迪逊长大的。

普林斯顿公开课 - 人性课程节选

"I never know how she manages with all the different things she does - the work, the family".

BBC: NEWS | UK | US lecture tour for Cherie Blair

"I never know what's going to happen because I'm always just trying to respond to the crowd, " she says.

NPR: Bhangra's DJ Rekha Takes the Dance Floor

On any given day I can feel great, but I never know when the pain will come or how long it will last.

CNN: Sickle cell patient refuses to let disease define her