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to keep an eye on sb/sth
01
to closely watch a person or thing, particularly in order to make sure they are safe
What is the origin of the idiom "keep an eye on someone or something" and when to use it?
The expression "keep an eye on someone or something" is an idiomatic phrase that has its origins rooted in the idea of vigilant observation and have been used in English for many years. It is commonly employed to highlight the need for awareness or surveillance, especially when there is a concern for safety, security, or supervision.
Example
The teacher reminded the students to keep an eye on the clock so they would finish the exam on time.
The security guard was instructed to keep an eye on the surveillance cameras to ensure the safety of the premises.
As we plan the wedding, we're keeping an eye on any cloud on the horizon that might affect the ceremony.
She asked her neighbor to keep an eye on her house while she was away on vacation.
When making large purchases, it's crucial to keep an eye on your balance to avoid overdrawing your account.