since 1997, the world's premier FREE website for learners + teachers of English
Get EnglishClub Progress! FREE

be sure to

This page is about the conversational phrase be sure to


You can say this when you're reminding someone to do something.

For example

  • "Be sure to lock the door when you leave."
    "Yes, Mum."

  • "Be sure to wear your seatbelt."
    "I won't forget, I promise."

Also "make sure you (do sth)" and "don't forget to (do sth)"

Quick Quiz

As our daughter was leaving for China, I said, "Be sure to

a. get into trouble, won't you?"

b. lose your passport, dear."

c. keep in touch, won't you?"

Contributor: Matt Errey