The phrase "to make sure" means to take steps or actions to ensure that something happens, is done correctly, or is completed as expected. It implies a sense of caution and attention to detail in order to avoid any mistakes or unintended outcomes.
Usage examples
I always double-check my work to make sure there are no errors.
To make sure everyone was comfortable, I adjusted the thermostat in the room.
She called her parents just to make sure they arrived safely.
I always lock the front door before going to bed to make sure the house is secure.
The coach reviewed the game footage to make sure the team was executing the correct plays.
To make sure I don't forget anything, I create a checklist before going grocery shopping.
He checked the schedule multiple times to make sure he didn't miss his flight.
Before submitting the report, she re-read it to make sure all the information was accurate.
To make sure the project runs smoothly, we need to assign tasks and establish clear deadlines.