e sure of 确信,对.有把握（后面加名词或动名词,表示一个事物或一件事）
1.With the quality tools,you can always be sure of successfully carrying out your demanding jobs!
拥有高品质的工具,您永远都可以确信能胜任各项具有挑战性的工作!
2.But by putting other good players around him he can be the best and you can be sure of winning more games.
但是换上另外一些球员在他周围,他能够做得更加出色,你可以赢得更多比赛.
3.To succeed in business ,you must be sure of yourself ..
要想经商成功,你必须有自信心.
4.It may take ten years to be sure of what we are seeing.
也许要用十年时间才能确认我们所看到的.
be sure to do 一定做某事,确定做（后面加动词原形）
1.Be sure to get here before nine!
一定要于九点前赶到这儿!
2.If so,be sure to follow it.
如果有,一定按照要求去做.
3.Be sure to save your work.
一定要保存您的工作.
4.This story is we started,so be sure to write a good life!
这个故事是我们开始,所以一定要写好自己的传奇人生!
5.When you speak English,be sure to make yourself understood.
你说英语时一定要让别人懂得你的意思.