告诉我你为什么这样做。

Tell me why you did it.

《牛津词典》

玛丽，你为什么不告诉我呢？

Why don't you tell me, Mary?

youdao

这是不合理的；因为，孩子，你为什么不告诉我呢？

It ain't reasonable; because, why didn't you tell me, child?

youdao

Can you give me, say, three or four reasons why what we're about to hear differs from what we just heard?

你能告诉我三四个原因吗,为什么我们马上要听到的音乐与刚听过的不同

耶鲁公开课 - 聆听音乐课程节选

I would think that it would approach inifinity, and I would need to think about it and get back to you in terms of why we don't actually hit it and see something with an infinite wavelength.

我会认为波长会接近无穷大，而且我需要考虑一下,然后返回来告诉你,为什么我们没有说对,为什么我们没有看到,无穷大波长的东西。

麻省理工公开课 - 化学原理课程节选

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