你需要点什么使你高兴起来，我知道什么正合你的需要。

You need something to cheer you up—I know just the thing!

《牛津词典》

我希望我可以说再换个时间就行了，但你知道这是怎么回事，每个人对这整个学期都已经有需要承担的义务了。

I wish I could say another time would be okay, but you know how it is, everybody's already got commitments for the whole semester.

youdao

我知道你又有了一个影子；我需要为你或者为它付出一点什么代价吗？

I know you have got another shadow again; have I anything to pay to it or you?

youdao

So it's by no means do I mean to suggest, "Oh, here's everything you need to know about the subject."

所以我绝不是在暗示,关于这个话题,你需要知道的就这么多

耶鲁公开课 - 死亡课程节选

And it's pretty expensive to do so because I think they know you need to do it.

这样做很贵，因为我想他们知道你需要这么做。

公共交通更方便 - SpeakingMax英语口语达人

Then, you've got to say, "What do I have to know about this object at the initial time?

然后,也许你会问,我需要知道物体初始状态的哪些信息呢

耶鲁公开课 - 基础物理课程节选