He might get there in time, but I can't be sure.

他有可能准时到达，但我不敢肯定。

《牛津词典》

England must win this game to be sure of qualifying.

英格兰队必须拿下这场比赛才能确保获得资格。

《牛津词典》

He is intelligent, to be sure, but he's also very lazy.

他固然聪明，但也很懒。

《牛津词典》

Scientists say more information is needed before they can be sure that painting roofs white would help battle rising temperatures.

VOA: special.2010.03.02

There are so few words that you can be sure that they were chosen with care. You'll be looking at Genesis 22 closely in your section discussions.

几乎没有一个词你可以确定含义，它们的选定都是经过仔细,推敲的，你们将在讨论阶段更详细地看《创世纪》第22章。

耶鲁公开课 - 旧约导论课程节选

because it will give you an opportunity to say "I want to be sure that this is done, has been done"

因为用这个句型，你就能表达“我想确认这事会做到的，或者已经做到了。”

Make sure 课堂 - SpeakingMax英语口语达人

We must empower children to speak up and then be sure that their voices are heard.

CNN: Impact Your World

Seattle is famous for its music scene, so be sure to catch a show.

BBC: A perfect day in Seattle

Be sure to visit Occidental Square and Pioneer Square Park before seeking out some breakfast.

BBC: A perfect day in Seattle