Didn't I know anything about turn about to right, but now I think I know enough to amuse them and to entertain them.

我从前从不知道这些东西，但现在我已经学的足够多,足够引起他们的兴趣了。

麻省理工公开课 - 媒体、教育、市场课程节选

I know we have vacation, but school is important to me.

我知道现在是假期，但学业对我来说很重要。

I'd rather 实战 - SpeakingMax英语口语达人

I don't know if you were reading about the subprime crisis, but we are living in a time, at this moment, of a financial crisis called the subprime crisis.

我不知道你们是否读过次贷危机的新闻,但现在,我们正在经历一场,名为次贷危机的金融危机

耶鲁公开课 - 金融市场课程节选

Suppose now--harder to imagine, but let's try it-- suppose now that you are an indignant angel and you're playing against, and you know this, you're playing against an evil git.

假设你是一个愤怒天使,我知道这个对你们来说很难,但你现在知道你要和,一个自私鬼博弈

耶鲁公开课 - 博弈论课程节选

Right now I want to go out with Peggy Sue, but if I knew these true--It's not that you think, oh your roommate has made it up, that these are lies; these are slander.

现在我想和Peggy，Sue约会，但如果我知道这些事实，不是你所想的那样，你室友瞎编的，都是些谎话;,它们是诽谤。

耶鲁公开课 - 死亡课程节选