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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
I know both
Grammar usage guide and real-world examplesUSAGE 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
Alternative expressions(6)
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
59 human-written examples
I know both goalkeepers".
News & Media
I know both well.
News & Media
"I know both are opposed".
News & Media
With hindsight, I know both are possible.
News & Media
"I know both runners are going.
News & Media
"I know both of them very well.
News & Media
"I know both of them well.
News & Media
"My privilege," she said, "is that I know both worlds".
News & Media
I know both of you will be here as well.
Academia
"They're definitely not representative of the people I know, both inside or outside the community".
News & Media
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
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".
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.
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.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
I'm acquainted with both
Replaces "know" with "acquainted with", implying a less intimate but still familiar relationship.
I am familiar with both
Uses "familiar with" instead of "know", suggesting knowledge and understanding.
I have knowledge of both
Emphasizes the possession of knowledge about the two subjects.
I'm aware of both
Indicates consciousness or awareness of the existence or nature of the two subjects.
I understand both
Suggests comprehension of the two subjects, implying a deeper level of knowledge.
I've experienced both
Implies direct involvement or exposure to the two subjects.
I recognize both
Indicates an ability to identify or distinguish the two subjects.
I've studied both
Suggests a formal or deliberate effort to learn about the two subjects.
I've worked with both
Implies practical experience or collaboration with the two subjects.
I have insight into both
Emphasizes a deeper understanding or intuitive grasp of the two subjects.
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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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested