我原以为我爱你，但现在我知道你纯粹是个胆小鬼。

I thought I loved you, but now I know you're really a rat.

youdao

他们习惯说知识就是力量。我以前也是这样，但现在我知道他们说的是钱。

They used to say knowledge is power. I used to think so, but I now know that they mean money.

youdao

几百年来，这幅画辗转流失，但现在我知道，一半放在杭州博物馆，一半放在台北故宫博物院，我希望两半幅画什么时候能合成一幅画。

For hundreds of years, this painting changed hands a lot of times. But I know that now half of this painting is kept in the museum in Hangzhou and the other half is in the museum in Taiwan.

youdao

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

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