If you want to know something like when do you hit the ground, I think it's fairly clear what you have to do.

如果你想知道车子何时落地,我想你该做什么就很明显了

耶鲁公开课 - 基础物理课程节选

it's like not so much about following these rules, these guidelines of what you're supposed to do.

这不是循规蹈矩，遵循你该做什么的指导。

艺术从自由起步 - SpeakingMax英语口语达人

If you decide to raise your hand, those are motor neurons telling the muscles what to do.

如果你要举手,这些运动神经元会告诉肌肉该做些什么

耶鲁公开课 - 心理学导论课程节选

And if you're not sure what to do, you can always go to club fairs,

如果你不确定该做什么，你可以一直去俱乐部的集会，

阿卡贝拉组合最棒 - SpeakingMax英语口语达人

What do you suggest that visitors should do in Covent Garden?

你建议游客该在科芬园做点什么？

科芬园的氛围 - SpeakingMax英语口语达人