Keep (one's)/an eye on (someone or something) verb phrase
The verb "keep" can be replaced by "have."
To pay close attention to someone or something in order to keep them from getting into trouble.
It'd be nice if you could keep an eye out on our son little while we go out for dinner tonight.
I think you should keep an eye on Delphine. She seems upset.
To spend the excessive amount of time on watching television
To observe one's activity
To concentrate on minor details instead of the whole situation.
To watch someone or something very closely and carefully
To listen to someone in a sympathetic or attentive way
The verb "keep" should be conjugated according to its tense.
This phrase derives from the fact that people frequently focus their complete attention, or 'both eyes,' on the activity at hand. To "keep an eye on" something suggests that even if the individual is preoccupied with something else, they are paying attention to other things as well.