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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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i known that

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "i known that" is not correct in written English.
It should be "I know that" to express awareness or understanding of something. Example: "I know that you are planning to attend the meeting tomorrow."

⚠ May contain grammatical issues

Human-verified examples from authoritative sources

Exact Expressions

33 human-written examples

Had I known that is what Elohor wanted, I wouldn't have bothered with all of this the last two days.

Had I known that was happening, I would have avoided it: I'd been involved in a number of civil rights marches and it generally doesn't make sense to walk into the front of a demo.

I didn't smash any cash registers or break any glass, but had I known that was an option, I might have responded differently.

News & Media

Huffington Post

Had I known that, I honestly would have stuck to basketball".

Had I known that there were going to be complications, I wouldn't have taken the shots".

"Had I known that it was this difficult, I might have done something else".

News & Media

The New York Times
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Human-verified similar examples from authoritative sources

Similar Expressions

27 human-written examples

"I know that look.

News & Media

The New York Times

I know that".

I know that feeling.

News & Media

The New York Times

"I know that place.

News & Media

Independent

Even I know that".

News & Media

The New Yorker
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Expert writing Tips

Best practice

Always use the correct subject-verb agreement. In this case, "I" requires the verb "know", not "known". So, use the phrase "I know that".

Common error

Avoid using the past participle form of a verb (e.g., "known") when a present tense verb is required with the subject "I". The correct form is the base verb (e.g., "know").

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

60%

Authority and reliability

1.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "i known that" is grammatically incorrect as it violates subject-verb agreement. The correct form, "I know that", functions as a declarative statement expressing knowledge or awareness. As Ludwig AI points out, the correct phrase uses the present tense verb "know".

Expression frequency: Missing

Frequent in

Science

0%

News & Media

0%

Formal & Business

0%

Less common in

Science

0%

News & Media

0%

Formal & Business

0%

Ludwig's WRAP-UP

The query phrase "i known that" is a grammatical error; the correct form is "I know that". Ludwig AI indicates that this error stems from incorrect subject-verb agreement. The corrected phrase expresses knowledge, awareness or understanding. As "i known that" is ungrammatical, it lacks representation in reliable sources, highlighting the importance of using "I know that" to properly convey the intended meaning in both formal and informal contexts.

FAQs

What is the correct way to say "i known that"?

The correct phrase is "I know that". The subject "I" requires the present tense verb "know", not the past participle "known".

When should I use "I know that"?

Use "I know that" to express awareness, understanding, or certainty about something. For example, "I know that the meeting is tomorrow".

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

You can use alternatives like "I am aware that", "I understand that", or "I realize that" depending on the context.

What's the difference between "I know that" and "I knew that"?

"I know that" refers to present knowledge, while "I knew that" refers to knowledge you had in the past. For example, "I know that today is Tuesday" vs. "I knew that he was coming yesterday".

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Source & Trust

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Authority and reliability

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Expert rating

Real-world application tested

Most frequent sentences: