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be sure to

This page is about the conversational phrase be sure to

Meaning

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."

Note:
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