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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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I know him

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "I know him" is correct and usable in written English.
You can use it when expressing familiarity or recognition of a person, typically in response to a question about someone. Example: "When asked if he was familiar with the new manager, John replied, 'I know him; we worked together at the last company.'"

✓ Grammatically correct

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Do I know him?

News & Media

The New Yorker

"I know him.

News & Media

The New York Times

Because I know him.

News & Media

The New Yorker

"I know him well.

'Oh, Straub, I know him.

News & Media

The New Yorker

I know him from here".

News & Media

The New Yorker

"I know him, like, perfectly.

"Listen, I know him.

Yes, I know him.

News & Media

The New York Times

So I know him.

"I know him enough".

News & Media

The New York Times
Show more...

Expert writing Tips

Best practice

Use "I know him" to establish a connection or provide context when someone's name is mentioned. It can quickly signal familiarity and potentially shared experiences.

Common error

Avoid using "I know him" if your acquaintance is superficial. Instead, clarify the extent of your relationship (e.g., "I've met him once" or "I know of him").

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

92%

Authority and reliability

4.8/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "I know him" functions as a declarative statement expressing the speaker's familiarity or acquaintance with a male individual. Based on Ludwig AI, it is a grammatically correct and commonly used expression.

Expression frequency: Very common

Frequent in

News & Media

100%

Less common in

Science

0%

Formal & Business

0%

Academia

0%

Ludwig's WRAP-UP

In summary, the phrase "I know him" is a grammatically sound and widely used expression for indicating familiarity with a male individual. As confirmed by Ludwig AI, its usage spans various contexts, primarily within news and media. While generally neutral in tone, more formal alternatives like "I am acquainted with him" exist for professional settings. When using "I know him", ensure your level of acquaintance matches the implied familiarity to avoid misleading your audience.

FAQs

When is it appropriate to use the phrase "I know him"?

Use "I know him" when you want to quickly convey that you are familiar with a person being discussed. The depth of your knowledge will be implied by the context, but if it's minimal, it's better to clarify (e.g., "I've only met him briefly").

What's a more formal alternative to "I know him"?

For a more formal tone, you can use phrases like "I am acquainted with him" or "I am familiar with him". These options are suitable for professional or academic settings.

How does "I know him" differ from "I know of him"?

"I know him" implies a direct connection or acquaintance, whereas "I know of him" suggests you are aware of his existence or reputation but haven't necessarily met him personally.

Can I use "I know him" even if I don't know him well?

While grammatically correct, using "I know him" when your familiarity is limited might be misleading. It's better to qualify your statement with something like "I've met him before" or "I know him casually" to avoid misrepresenting the extent of your relationship.

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Source & Trust

92%

Authority and reliability

4.8/5

Expert rating

Real-world application tested

Most frequent sentences: