Grammar fix
keep an eye on
watch carefully
to watch someone or something closely, usually to make sure they are safe or nothing goes wrong.
collocationB1common
Hear it in context
Notice where the phrase sounds natural.
Can you keep an eye on my bag while I go to the restroom?
During my part-time job at the library, I had to keep an eye on the reading room to make sure everyone followed the rules.
Fix the pattern
One small grammar move makes it sound right.
Not: Can you keep an eye to the bags?
Say: Can you keep an eye on the bags?
It's 'keep an eye ON something', not 'to'.
Which sounds natural?
Tap the one a native speaker would say.
'Keep an eye on' is the everyday phrase; 'maintain visual supervision' is robotic.
Build natural chunks
Words that usually travel with it.
keep an eye on
- on
- the kids
- things
- your bag