be

be sure to发音：[bi ʃʊr tu]

be sure to的意思是：一定;必定;无疑

例句：

Every time you skip a question, be sure to mark it in time.

翻译为：你每跳过一道试题，一定要及时标记。

If you must deep fry, be sure to drain the food on kitchen paper, turning it a few times to drain off as much oil as possible.

翻译为：如果你一定要油炸，一定要把食物放在厨房的纸上，翻动几次尽量把油吸干。

这里的是be sure to 的意思都是一定。

同近义词

be bound to do , make sure that一定