I knew I had to get up early.

我知道我得早起。

《柯林斯英汉双解大词典》

I knew I had him on the run.

我知道我已打得他落花流水。

《柯林斯英汉双解大词典》

I knew I needed a bit of luck to win.

我知道我得靠点运气才能取胜。

《柯林斯英汉双解大词典》

I just got good at it, because I knew I had to hurry because I was supposed to die."

VOA: special.2009.09.16

But if you want to know the answer, and I knew it, but I forget what it is-- it doesn't matter.

如果你想知道答案,我曾经是知道答案的,不过我忘掉了,这不重要

耶鲁公开课 - 心理学导论课程节选

Well, I am from Spain, so I knew I wanted to come to the U.S. because of the system.

嗯，我是西班牙人，所以我知道我想到美国，因为美国的教育体系。

来自西班牙的留学生 - SpeakingMax英语口语达人

"I knew I had to go wherever the people were suffering, " Mrs Klarsfeld said.

BBC: NEWS | Special Reports | 'Our hunt for the Nazis is over'

And when he changed colours, I knew I would never see anything as astonishing again.

BBC: The end of a wandering way of life?

At 150 pounds over my "ideal" weight, I knew I couldn't continue on this path.

CNN: 'Drastically overweight' lawyer finds drastic solution