make sure
fixed phr..fixed phr.. To check something to be certain that it is correct, safe, or happening as you want.
fixed phr.. A verb phrase used to express the act of ensuring or verifying a fact or outcome, often followed by a 'that'-clause.
Make sure the door is locked.
Before you leave, make sure you have turned off all the lights in the house.
The project manager must make sure that all stakeholders are informed of the revised timeline to prevent any misunderstandings.
Often followed by a 'that'-clause, although 'that' can be omitted in informal speech.
Contrast with 'check': 'check' means to look at something, while 'make sure' implies taking action to guarantee the result.
He made sure the door is locked.He made sure the door was locked.The tense in the clause that follows should usually match the tense of the main verb 'make'.