I knew it was time I struck out on my own.

我知道我该独立谋生了。

《牛津词典》

I knew it! I knew you'd be here!

我就知道！我就知道你会来！

youdao

But I knew it was out of the question.

但我知道这是不可能的。

youdao

I say I knew it well. I knew what the old man felt, and felt sorry for him, although I laughed to myself.

VOA: special.2009.05.16

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

He was conning me and I knew it for room and board and how to write, etc., and he knew I knew.

我知道他欺骗我，并且他也知道我知道。

耶鲁公开课 - 1945年后的美国小说课程节选

When I placed that half marathon medal around my neck, I knew it had all been worth it.

CNN: It's more than a race to me

"I knew it would be hard to make something possible for this year, " Conway said.

NPR: Conway Wins 1st Of 2 Races At Detroit Grand Prix

If I ate too much, I knew it immediately because I would feel sick.

CNN: 'Drastically overweight' lawyer finds drastic solution