be sure

idiom

—used to tell someone not to forget to do something

Be sure to lock the door when you leave.

Examples of be sure in a Sentence

Recent Examples on the Web

To be sure, many AI solutions today are little more than complex if-else statements paired with large language models, the long-term winners will be those that push the boundaries of what’s possible. —Alexander Puutio, Forbes, 19 Jan. 2025

Because vitamin D is fat-soluble, be sure to take it with a meal or snack containing dietary fat. —Jonathan Purtell, Verywell Health, 19 Jan. 2025

Containers dry out faster than plants in the ground, so be sure to water containers deeply when the upper two inches of soil feels dry to the touch. —Kim Toscano, Southern Living, 19 Jan. 2025

That said, there will be a new moon in your sign on Jan. 29, offering you a powerful opportunity to set intentions for the year ahead — this is your fresh start so be sure to focus on goals that align with your future visions. —Valerie Mesa, People.com, 19 Jan. 2025