Why do you dislike him so much?

你为什么那么讨厌他呢？

《牛津词典》

Why do you never dot your i's?

你为什么从不在字母i上加点呢？

《牛津词典》

Why do you have to be so untidy?

你为什么非得这么邋遢？

《牛津词典》

Her name is Well Enough." BENNY: "Why do you call your girl Well Enough?"

VOA: special.2009.03.09

On Thursday, we'll look at why that allows you to do lots of things more conveniently than you can do without mutation.

周四我们会探讨下,为什么这种可变性会让你,在进行很多操作的时候方便了许多。

麻省理工公开课 - 计算机科学及编程导论课程节选

Why do you go to school?, "To have friends or to eat good food." you know.

你问他们“为什么要去上学？”他们回答往往是“交朋友或者吃好吃的”。

记忆深刻的研究 - SpeakingMax英语口语达人

In that way the future is always now, because it is always time to consider what you do and why you do it.

CNN: The future is now

First, it feels good as a leader to get to this level of clarity about why you do what you do.

FORBES: Do You Have a Declaration of Innovation?

There can be pressure to fulfill outside expectations, and in following a predetermined path, you may suddenly find yourself wondering why you do what you do.

FORBES: What Would Michelle Obama Do?