我知道我自己就是这样。

I know that is true in my own case.

youdao

不过我知道我自己是怎样的人。

But I find that I know who I am.

youdao

最重要的是，我知道我自己不会再神经错乱了。

Most importantly, I know I will never be that ill again.

youdao

They didn't know I was going to ask them the question, so I think they are really thrilled when they see their kids making it.

他们不知道我正要,问这个问题，所以当他们看见自己孩子制作的地图,感到很激动。

麻省理工公开课 - 媒体、教育、市场课程节选

I chose English Literature because when I started off a university, I didn't know what it was I wanted to do.

我选英语文学是因为当我刚上大学的时候，我不知道自己到底想做什么。

为何选那门专业？ - SpeakingMax英语口语达人

I think that those with the idea of we all gonna to die but what of it?

我认为正是那些知道自己会死,却又不知道死亡意味什么的人？

麻省理工公开课 - 电影哲学课程节选