English phrase from drama scenes

What Does "you should keep a close eye on him" Mean?

Learn what "you should keep a close eye on him" means, when people say it, and how to use it naturally in English.

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Well then, you should keep a close eye on him, okay?

It means to monitor someone carefully because they may be suspicious or important.

From Love’s Perfect Crime, Episode 31

When do people say this?

Scene Context

Someone advises another person to watch a suspect carefully.

Usage Scenario

Use this when advising someone to watch a person or situation carefully. It is common in everyday English and works in work or investigation contexts.

Better ways to say it

1
You should keep a close eye on him.
2
Keep a close eye on him.
3
Watch him closely.

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