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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
i known that
Grammar usage guide and real-world examplesUSAGE 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
Alternative expressions(20)
I am aware that
I know that
I understand that
I realize that
i know that
i am aware that
i understand that
i realize that
i recognize that
i have learned that
i realised that
i learned that
i recognized that
i appreciated that
i understood that
i ascertained that
i recognise that
i aware that
i learnt that
i can confirm that
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
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.
News & Media
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.
News & Media
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
Had I known that, I honestly would have stuck to basketball".
News & Media
Had I known that there were going to be complications, I wouldn't have taken the shots".
News & Media
"Had I known that it was this difficult, I might have done something else".
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
27 human-written examples
"I know that look.
News & Media
I know that".
News & Media
I know that feeling.
News & Media
"I know that place.
News & Media
Even I know that".
News & Media
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").
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".
Frequent in
Science
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News & Media
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Formal & Business
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Less common in
Science
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News & Media
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Formal & Business
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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.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
i know that
Corrects the grammatical error by using the proper subject-verb agreement.
i am aware that
Replaces "know" with a synonymous phrase using "aware" to convey the same meaning of being informed.
i understand that
Substitutes "know" with "understand", indicating comprehension rather than just awareness.
i realize that
Uses "realize" to imply a recent understanding or acknowledgment of something.
it is known to me that
Changes the structure to a passive form, emphasizing that the information is known to the speaker.
i recognize that
Implies acknowledging something that was previously known but perhaps not fully appreciated.
i have learned that
Indicates that the knowledge was acquired over time or through experience.
i have come to know that
Emphasizes the process of gaining knowledge over time.
i can confirm that
Shifts the focus to affirming the truth or validity of a statement.
i have ascertained that
Suggests that the knowledge was discovered as a result of investigation.
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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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
60%
Authority and reliability
1.5/5
Expert rating
Real-world application tested