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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

MitStanfordHarvardAustralian Nationa UniversityNanyangOxford

they know of

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "they know of" is correct and usable in written English.
It can be used when referring to someone's awareness or knowledge about a particular subject or situation. Example: "They know of the challenges we are facing in the project and are willing to help."

✓ Grammatically correct

News & Media

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

What do they know of their targets?

News & Media

The New York Times

What do they know of yours?

Maybe they know of some solutions!

News & Media

The New York Times

Investigators say they know of no suspects.

News & Media

The New York Times

They know of what they speak.

WHAT do they know of money, who only money know?

News & Media

The Economist

Or did they know of actual threats against us?

The first victim they know of was prostitute Roxene Roggasch.

News & Media

The Guardian

What do they know of football that only football know?

What do they know of economics who only economics know?

So I think they know of international football.

News & Media

The New York Times
Show more...

Expert writing Tips

Best practice

Use the phrase "they know of" when indicating that a group has some awareness or information about a topic, but not necessarily a deep understanding. For example, "They know of the risks involved in the project."

Common error

Avoid using "they know of" when you mean they have direct, comprehensive knowledge. Instead, use "they know" to indicate complete understanding.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

80%

Authority and reliability

4.1/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "they know of" functions as a verbal phrase indicating that a group possesses some level of awareness or information about something. Ludwig AI validates the correctness and usability of this phrase, demonstrated through numerous examples.

Expression frequency: Very common

Frequent in

News & Media

37%

Wiki

27%

Science

23%

Less common in

Formal & Business

8%

Encyclopedias

0%

Reference

0%

Ludwig's WRAP-UP

In summary, "they know of" is a versatile phrase used to indicate that a group has some awareness or information regarding a particular subject. Ludwig AI confirms its grammatical correctness and common usage across diverse contexts, including news, science, and general writing. The phrase serves to establish a level of familiarity or acknowledgment without implying deep or comprehensive knowledge. While appropriate for both formal and informal settings, it's important to differentiate its meaning from "they know", which suggests a more thorough understanding. As Ludwig demonstrates, understanding subtle distinctions in phrasing allows for more precise and effective communication.

FAQs

How can I use "they know of" in a sentence?

You can use "they know of" to indicate that a group is aware of something, even if their knowledge is not complete or detailed. For example, "They know of the issues but aren't fully informed."

What's the difference between "they know of" and "they know"?

"They know of" implies awareness or recognition, while "they know" indicates deeper understanding or familiarity. If you need to say that someone has received information rather than experienced it directly, use "they have heard about".

What can I say instead of "they know of"?

Is "they know of" formal or informal?

"They know of" is generally considered neutral in tone and can be used in both formal and informal contexts. Alternatives like "they are cognizant of" can be employed for heightened formality.

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Source & Trust

80%

Authority and reliability

4.1/5

Expert rating

Real-world application tested

Most frequent sentences: