Keep an eye on
Meaning/Usage: To watch after; to supervise; to take care of
Explanation: When you have your eye on something or you are watching something, then you are paying attention to something or someone.
Can you keep an eye on my daughter while I go get the car?
Don't worry about your luggage. I'll keep an eye on it.
My mom will keep an eye on our equipment while we go get the truck.
A:
Excuse me sir.
B:
Yes.
A:
I have to go to the bathroom. Can you keep an eye on my suitcase for a minute?
B:
No problem.
Other Common Sentences
Can you watch my bag for me?
Can you watch my suitcase while I go to the bathroom.