If you hook a soul up to a body, you can tell the soul was there, by what the body is doing.

如果你通过身体探测灵魂，你可以知道灵魂在那，根据身体在干什么。

耶鲁公开课 - 死亡课程节选

I saw you sitting on the step and writing something. What were you doing?

我看见你坐在台阶上写什么。你在干什么呢？

沟通很重要 - SpeakingMax英语口语达人

If you hook a radio wave up with a radio, you can tell the radio wave was there because what the radio is doing?

如果你用收音机检测无线电波，你可以知道无线电波在那,因为收音机在干什么？

耶鲁公开课 - 死亡课程节选

You're not sure what they do at these meetings.

你不清楚他们在会上干什么。

耶鲁公开课 - 新约课程节选

whatever you're doing, I think that's what I would advise.

不管你在干什么，我想这些就是我的建议。

想征服英语的话 - SpeakingMax英语口语达人

What do you usually do at Union Square?

你经常在联合广场干什么？

去过超市吗？ - SpeakingMax英语口语达人

What do you usually do in Union Square?

你通常在联合广场干什么？

联合广场呢 - SpeakingMax英语口语达人

What do you usually do on Facebook?

你一般在Facebook上干什么？

用社交网站找到的人 - SpeakingMax英语口语达人