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
as primary resource
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "as primary resource" is not entirely correct; it should be "as a primary resource." You can use it when referring to something that serves as a main source of information or material in a specific context.
Example: "The library serves as a primary resource for students conducting research on historical events."
Science
News & Media
Academia
Alternative expressions(1)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
In fact, this has forced companies to provide other companies their wastes as primary resources and vice-versa.
They serve as primary resources for study and research in art history, Near Eastern studies, classics, Romance languages and more.
Academia
The isolated BAC clones presented in this report will be useful as primary resources for genome sequencing.
Science
Building of the cross-references is performed with data from five mammalian organisms (human, mouse, rat, cow and dog) using UniProt, RefSeq and Ensembl as primary resources.
Science
An integrated community-based development project, Childscope, places the child at the center, and uses the community and the school in partnership as primary resources for improving children's well-being and learning experiences.
Formal & Business
Since their original description and involvement as primary resources in human gene discovery [ 1], ESTs grow exponentially in various public databases, which will continue till there is suitable funding for the sequencing projects.
Recently, Peterson et al. reported that the majority of medical students preferred electronic sources as primary resources, and exclusively electronic textbooks with rapid searching capabilities were the most frequently utilized [ 9].
Science
as well as primary resources that you can frequently acquire through a few phone calls whether by using the phone book or by contacts you know from work or your personal life.
Wiki
We used the CTD as the primary resource for drugs as references to DrugBank identifiers are provided thus facilitating the mapping between these two resources.
Science
At its peak in 2004, the site was averaging 15,000 visits a day and served as a primary resource for columnists such as The Washington Post's Dana Milbank.
Academia
Make note to use books as the primary resource for additional information as the Internet may not have reliable information.
Wiki
Expert writing Tips
Best practice
When using the phrase "as primary resource", ensure it clearly indicates that the subject is a primary, essential source or material. While grammatically acceptable, consider using "as a primary resource" for improved clarity and common usage.
Common error
Be careful not to omit the article "a" before "primary resource". Although "as primary resource" is sometimes used, it can sound less formal or slightly incorrect to some readers. Using "as a primary resource" usually provides a clearer and more widely accepted phrasing.
Source & Trust
78%
Authority and reliability
3.9/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "as primary resource" functions as a complement, specifically describing the role or function of a noun or pronoun within a sentence. Ludwig indicates that it can often be improved by adding the article 'a'.
Frequent in
Science
33%
News & Media
33%
Academia
33%
Less common in
Encyclopedias
0%
Wiki
0%
Formal & Business
0%
Ludwig's WRAP-UP
The phrase "as primary resource" is used to denote that something serves as a main source of information or material. While grammatically acceptable, Ludwig suggests that adding the article 'a' ("as a primary resource") often improves clarity and is more commonly used. This phrase appears in academic, scientific, and news contexts. Alternatives include "as a main resource" and "as a key resource". While "as primary resource" is understandable, using "as a primary resource" enhances both formal correctness and ease of comprehension. Be aware that source authority is moderate and experts recommend considering using it. It's acceptable, and you might encounter it, but it's better to opt for the more common variant.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
as a main resource
Emphasizes the role of being the principal resource.
as a key resource
Highlights the importance and essential nature of the resource.
as the primary source
Focuses on the origin of the resource, emphasizing its originality.
as the main source
Stresses the resource being the most important or principal.
as a central resource
Highlights the resource's position as a focal point.
as a core resource
Implies that the resource is fundamental and indispensable.
as the go-to resource
Suggests the resource is the first choice or most convenient option.
as the leading resource
Indicates that the resource is the most prominent or successful.
acting as the primary support
Highlights the supporting role of the resource.
serving as the foremost resource
Emphasizes the resource's leading position and importance.
FAQs
Is "as primary resource" grammatically correct?
While "as primary resource" is sometimes used, it's generally considered more grammatically sound and clearer to use "as a primary resource". The inclusion of the article "a" often improves the flow and formal correctness of the sentence.
What are some alternatives to "as primary resource"?
You can use alternatives such as "as a main resource", "as a key resource", or "as the primary source" depending on the specific context and emphasis you want to convey.
How can I improve the clarity of sentences using "as primary resource"?
To enhance clarity, ensure the context clearly indicates what the subject is serving as a primary resource for. Also, consider if replacing it with "as a key resource" or adding the article "a" would make the sentence more easily understandable.
In what contexts is "as primary resource" most appropriately used?
"As primary resource" can be used in various contexts, but it's often found in academic, scientific, and news-related articles. However, always consider whether "as a primary resource" would be a more suitable and clearer option.
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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
78%
Authority and reliability
3.9/5
Expert rating
Real-world application tested