Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
a copy of one
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a copy of one" is correct and usable in written English.
It can be used when referring to a duplicate or reproduction of a single item or document. Example: "Please send me a copy of one of the reports for my review."
✓ Grammatically correct
News & Media
Science
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
58 human-written examples
His wife owned "thousands" of Guo Peis, and they lived in a "royal palace," or at least a copy of one, on the grounds of a water park.
News & Media
It was not possible to obtain a copy of one report on bioaccumulation and two papers on persistence that had been identified during the review of the literature, so these studies could not be assessed.
In fact I often keep a copy of one of her books on my desk, along with Virginia Woolf.
News & Media
By Herbert Asbury The New Yorker, October 8 , 1927P. 17 Elmer Davis writes his name on a copy of one his novels in a bookstore and askes the clerk the price of it.
News & Media
Wingo posted a copy of one of the Amazon Lending emails on ChannelAdvisor's blog on Thursday.
News & Media
I've got a copy of one of her paintings done on canvas by an artist in Thailand.
News & Media
One interviewee told us that he had a copy of one of the relaxation files on his computer and used it regularly.
Science
Only 12.0% reported specific training in environmental history taking, and 12.0% reported having a copy of one of two widely-published texts on children's environmental health.
Science
Morrison gave me a copy of one of the first books she worked on, "Contemporary African Literature," published in 1972, a groundbreaking collection that included work by Wole Soyinka, Chinua Achebe, Léopold-Sédar Senghor, and Athol Fugard.
News & Media
I remember sitting up in bed, with a copy of one of Willard Price's Adventure series in my hands, and on my lap a colossal book of facts such as The Encyclopaedia of Natural History.
News & Media
She has already won two Rita Awards (the romance-novel industry's highest honor), and a copy of one of her more obscure works, "Ladies Mann," recently sold for $1,000 on eBay.
News & Media
Expert writing Tips
Best practice
When using "a copy of one", ensure the context clearly indicates what the 'one' refers to, avoiding ambiguity. For example, "I need a copy of one of the invoices" is clearer if the invoices have been previously mentioned.
Common error
A common mistake is using "a copy of one" without a clear referent for 'one'. To prevent confusion, make sure the item being copied has been explicitly stated or is easily understood from the context. For instance, instead of saying "Can I get a copy of one?", specify, "Can I get a copy of one of the contracts?".
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a copy of one" functions as a noun phrase, typically acting as the object of a verb or preposition. It indicates that a duplicate or reproduction of something is being referred to. Ludwig provides numerous examples of this usage in diverse contexts.
Frequent in
News & Media
58%
Science
33%
Wiki
3%
Less common in
Formal & Business
3%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "a copy of one" is a grammatically sound and frequently used expression, as validated by Ludwig. It serves the purpose of referring to a duplicate or reproduction of a specific item within a larger set. Usage is widespread across different types of sources, including News & Media and Science, showing its versatility. While grammatically correct, it's crucial to ensure the context clearly indicates what 'one' refers to, avoiding ambiguity. By providing various examples and identifying related phrases, Ludwig empowers users to confidently use "a copy of one" in their writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
a duplicate of one
Replaces "copy" with "duplicate", emphasizing an exact reproduction.
a version of one
Substitutes "copy" with "version", indicating a specific form or edition.
a reproduction of one
Uses "reproduction" instead of "copy", highlighting the act of recreating something.
a facsimile of one
Replaces "copy" with "facsimile", emphasizing an exact visual likeness.
an instance of one
Employs "instance" to suggest a particular occurrence or example.
a transcript of one
Uses "transcript" instead of "copy", referring to a written or printed version.
a sample of one
Replaces "copy" with "sample", implying a representative portion.
a counterpart of one
Replaces "copy" with "counterpart", indicating something that corresponds to or closely resembles another.
a specimen of one
Uses "specimen" to refer to a particular example used for study.
a rendering of one
Substitutes "copy" with "rendering", suggesting an interpretation or artistic representation.
FAQs
How can I use "a copy of one" in a sentence?
You can use "a copy of one" when you're referring to a specific item out of a group that you need a duplicate of. For example, "I need "a copy of one" of those reports.".
What can I say instead of "a copy of one"?
Alternatives include "a duplicate of one", "a version of one", or "a reproduction of one", depending on the nuance you want to convey.
Is it correct to say "a copy of one of the" followed by a plural noun?
Yes, it's grammatically correct. "A copy of one of the" is typically followed by a plural noun to indicate you want a duplicate from a group. Example: "I'd like "a copy of one" of the photographs."
What's the difference between "a copy of one" and "the copy of one"?
"A copy of one" implies that you're selecting one item from several to make a duplicate. "The copy of one" suggests you're referring to a specific duplicate that already exists or has been previously mentioned.
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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