be sure to do something

be sure to (do something)

To make a conscious effort to do something. Typically used as an imperative. Be sure to pick up a shovel before this weekend's snow storm. I know the door is locked because I was sure to double check it before I left.See also: sure

be sure to do something

(also be sure and do something spoken) used to tell somebody to do something: Be sure to give your family my regards.Be sure and call me tomorrow.See also: something, sure