我问他为什么要这样做。

I asked him why he did this.

youdao

你说他们为什么要这样做呢？

What did you say they did, for?

youdao

他沮丧地叫道：“我究竟为什么要这样做？”

He cried dismally, "why ever did I do it?"

youdao

Why should I act in such a way if I have no expectation or reasonable expectation that those around me will reciprocate?

如果我对别人的报答,没有期望或合理的期望,我为什么要这样做？

耶鲁公开课 - 政治哲学导论课程节选

Why does God do this? Isn't this, in a way, Putting an obstacle in front of someone Almost ensuring they're going to trip over it?

上帝为什么要这样做？，不是吗，可以这样说，在人面前摆了一个障碍物,几乎确定他会被绊倒？

耶鲁公开课 - 旧约导论课程节选

So, the question is, why did he do that?

问题是，他为什么要这样做？

耶鲁公开课 - 1945年后的美国小说课程节选