You see, but you do not observe.

你是在看，而不是在观察。

youdao

You promise that, do you not?

你答应过的，不是吗？

youdao

You may be disconnected if you do not pay the bill.

若不付费就可能停止供应。

《牛津词典》

You know,the circulation, and the smell of your own panic, you know, when you're not sure what to do."

VOA: special.2010.07.26

It does not take one to know one; to understand the truths about the French, you do not yourself need to be French.

这不需要同类互知,你不需要是法国人,才能了解法国人

耶鲁公开课 - 死亡课程节选

You can use it to show that you have or do not have, posses or do not possess, something tangible or intangible.

你可以用它来表示你有或者没有的东西，不管是这些东西是有形还是无形，都可以通用。

I have 课堂 - SpeakingMax英语口语达人

Anyway, if you do not start, you surely do not accomplish.

FORBES: HP's Push To Higher-Value Applications

For instance, if you studied law and you discover that it bores you to tears, you do not simply turn your back on the skills you have developed.

FORBES: Robert Greene: How to Become the Master of Any Skill

This is an app you should download to teach the people you care about that privacy issues are real, that social networks like Facebook and Foursquare expose you and the ones you love, and that if you do not know exactly how much you are sharing, you are as easily preyed upon as if you were naked.

FORBES: The Reaction To 'Girls Around Me' Was Far More Disturbing Than The 'Creepy' App Itself