妈妈说：“辛迪，我知道你现在很难过。”

Mom said, "Cindy, I know this is hard time for you."

youdao

我知道你现在的心情不好。

I know it is a bad time for you.

youdao

我知道你现在很苦恼但是你必须自己决定。

M:I know you are upset now and you must decide for youself.

youdao

I don't know how much you read about the-- right now we are going through a major financial crisis, which started in the U.S.

我并不知道你读了多少...,现在我们正在经历一个严重的金融危机,它起始于美国

耶鲁公开课 - 金融市场课程节选

I know that you have just graduated. So do you feel happy now?

我知道你刚毕业。那么你现在感到幸福吗？

寻找幸福 - SpeakingMax英语口语达人

I could have, you know, polygonal figures, that are a sequence of segments.

现在我还可以对它进行延伸，我可以，你知道的，建造一个多边形。

麻省理工公开课 - 计算机科学及编程导论课程节选