has been known

USAGE SUMMARY

The phrase "has been known" is correct and usable in written English.
This phrase is used to indicate that a fact is already known or established. For example, "It has been known that dogs are some of the best pets to have."

✓ Grammatically correct

News & Media

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

59 human-written examples

That has been known since 1939.

The Economist

It has been known to work wonders.

The New York Times

He has been known for his philanthropy.

The New Yorker

It has been known.

The Guardian

Google has been known to settle cases.

The New York Times - Tech

But bravado has been known to backfire.

The New York Times

It has been known to happen.

The Guardian - Sport

He has been known to, though.

The New York Times

This has been known to happen.

The New York Times - Sports

This has been known since 1996.

The Guardian

It has been known for six months".

The Guardian

Expert writing Tips

Best practice

Use "has been known" to introduce a fact that is already established or widely accepted within a specific context. This can help build credibility by showing awareness of existing knowledge.

Common error

Avoid overuse of passive constructions like "has been known" which can make your writing sound less direct. Balance its use with more active constructions to maintain a clear and engaging style.

Linguistic Context

The phrase "has been known" functions as a present perfect passive construction. It indicates that a fact or piece of information has been established or recognized over a period of time. Ludwig AI confirms this with numerous examples showing the phrase's utility in introducing widely accepted knowledge.

Expression frequency: Very common

Frequent in

News & Media

40%

Science

35%

Wiki

10%

Less common in

Encyclopedias

5%

Formal & Business

5%

Reference

5%

Ludwig's WRAP-UP

The phrase "has been known" is a common and grammatically sound construction used to introduce information that is widely recognized or established. As Ludwig AI confirms, its function is to signal shared understanding and build upon existing knowledge. Its usage spans various contexts, from news and media to scientific literature, making it a versatile addition to any writer's toolkit. While "has been known" is often appropriate, consider alternatives such as "is widely recognized" or "is an established fact" for varied tone and emphasis.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

is a well-known fact

Focuses on the common knowledge aspect.

is widely recognized

Stresses the broad acceptance of the information.

is already established

Emphasizes the established nature of the information.

is a recognized fact

Highlights the widespread recognition of a particular detail.

is generally accepted

Indicates agreement and validation of the information.

is common knowledge

Implies that the information is widely understood.

is acknowledged

Implies the information is officially or formally recognized.

is understood

Highlights a basic level of understanding.

has been determined

Highlights that the information is the result of a formal process of ascertainment.

is no secret

Suggests that the information is openly available and not concealed.

FAQs

How can I use "has been known" in a sentence?

The phrase "has been known" is typically used to introduce a fact or piece of information that is already widely recognized or established. For example, "It "has been known" for centuries that exercise is good for your health."

What's a more formal alternative to "has been known"?

For a more formal tone, consider using phrases like "is an established fact", "is widely recognized", or "is a matter of public record". These options offer a similar meaning while maintaining a more elevated register.

Which is correct, "has been known" or "is known"?

Both "has been known" and "is known" are grammatically correct, but they have slightly different nuances. "Has been known" implies that the information has been known for some time, while "is known" simply states that the information is currently known.

What can I say instead of "has been known" to show recent discovery?

If you want to indicate a more recent discovery, you could use phrases like "has recently been discovered", "has only recently become apparent", or "is now understood" depending on the context.