"Maybe seven years ago you'd see WWW and blah blah blah and I'd think why do people need this.

VOA: standard.2010.01.05

So when I expand this gas adiabatically and it cools down, why do you think it might cool down?

现在我们知道了气体绝热膨胀时,温度会下载，为什么会降温？

麻省理工公开课 - 热力学与动力学课程节选

I think we all know what it's like, actually, just watching yourself retaliate against somebody because you're angry and stop wondering why did I do that.

我想我们都深有体会，看着自己与某人作对，复仇,因为出于愤怒,而不再思考究竟是为了什么。

普林斯顿公开课 - 人性课程节选

And I noticed you had your, yes why do you believe ? he was guilty and got what he deserved?

我注意到你想发言，为何你相信,他有罪且接受应得惩罚？

耶鲁公开课 - 政治哲学导论课程节选

And then of course, once we figure out why not, we try and fix it. but today I'm going to emphasize not how do you fix it, but how do you find out what's wrong.

我们就会去尝试着修复程序，但是今天我强调的,并不是怎么去修复，而是怎么找出来错误原因。

麻省理工公开课 - 计算机科学及编程导论课程节选

And, as you know from reading the textbook, why do I mention Nora Jones?

大家在教科书里能找到,我为什么要提起诺拉·琼斯

耶鲁公开课 - 聆听音乐课程节选

Some of you are probably going to be doctors and you don't know why I'm going to do special relativity or quantum mechanics, but you don't know when it will come in handy.

你们中的有些人可能会成为医生,但你们现在不能理解,我为什么要讲相对论和量子力学,但是说不定什么时候,你就用上了呢

耶鲁公开课 - 基础物理课程节选

And, you know, when you go up there, as you go up to Montmartre, it's incredible--because I was there once very, very late in the afternoon, and oddly enough I met this woman who went there every day, and I said, "why do you go there every day?"

你知道,当你去到那边,当你去到蒙马特高地,那简直不可思议,因为有次下午很晚了,我在那边,很神奇的,我遇到了一位妇人,她每天都到那里去,我就问她,"你为什么每天都来"

耶鲁公开课 - 1871年后的法国课程节选

Right? Now, unfortunatly, I myself just do not fall behind that idea, and I'll tell you why.

不错，但是恐怕我自己,不同意这种观点，我来告诉你为什么。

普林斯顿公开课 - 人性课程节选

And you'll see in about two minutes why I'm going to do this.

你们会在大约两分钟之内,明白为什么我要提这个。

麻省理工公开课 - 计算机科学及编程导论课程节选