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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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I know both

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "I know both" is correct and usable in written English.
You can use it when you want to express familiarity or knowledge about two subjects, people, or items. Example: "When it comes to the two candidates, I know both and can provide insights on their strengths and weaknesses."

✓ Grammatically correct

News & Media

Academia

Human-verified examples from authoritative sources

Exact Expressions

59 human-written examples

I know both goalkeepers".

News & Media

Independent

I know both well.

"I know both are opposed".

News & Media

The New York Times

With hindsight, I know both are possible.

"I know both runners are going.

"I know both of them very well.

"I know both of them well.

"My privilege," she said, "is that I know both worlds".

News & Media

The New York Times

I know both of you will be here as well.

"They're definitely not representative of the people I know, both inside or outside the community".

News & Media

The New York Times
Show more...

Human-verified similar examples from authoritative sources

Similar Expressions

1 human-written examples

Under the new Equality Act which comes into force, the law recognises that you can be - this is innovative I know - both a woman, and old.

News & Media

The Guardian

Expert writing Tips

Best practice

Use "I know both" to establish credibility or expertise by indicating familiarity with multiple aspects of a topic or situation.

Common error

Avoid using "I know both" when referring to more than two subjects. If there are more than two, consider using "I know all of them" or "I am familiar with each of them".

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

87%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "I know both" functions as a declarative statement expressing familiarity or knowledge regarding two specific subjects. Ludwig AI indicates the phrase is correct and usable in written English. This is supported by the examples provided.

Expression frequency: Very common

Frequent in

News & Media

59%

Academia

11%

Formal & Business

0%

Less common in

Science

30%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, "I know both" is a grammatically correct and very common phrase used to express familiarity or knowledge of two specific subjects. According to Ludwig AI, it's a valid expression in written English. Predominantly found in news and media contexts, it also appears in academic settings. When using this phrase, ensure clear reference to the two subjects to avoid ambiguity. Alternatives include "I am familiar with both" or "I'm acquainted with both". Avoid using "I know both" when referring to more than two subjects. Ludwig's analysis shows authoritative sources like The New York Times and BBC frequently employ this expression.

FAQs

How can I use "I know both" in a sentence?

You can use "I know both" to indicate familiarity with two subjects, such as "When it comes to the two candidates, "I know both" and can provide insights on their strengths and weaknesses."

What are some alternatives to "I know both"?

Some alternatives include "I am familiar with both", "I'm acquainted with both", or "I'm aware of both", depending on the specific context.

Is it correct to say "I know both of them"?

Yes, "I know both of them" is a grammatically correct and often more explicit way of saying ""I know both"", particularly when the subjects have been previously mentioned.

What's the difference between "I know both" and "I know them both"?

While both phrases are generally interchangeable, ""I know both"" is slightly more concise. "I know them both" can emphasize the individuals being known.

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Source & Trust

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Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: