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 alterations
Grammar usage guide and real-world examplesUSAGE SUMMARY
'a alterations' is not correct in written English.
You could use 'alterations', as in "We had to make some alterations to the plans." or "Several alterations have been made to the rules."
⚠ May contain grammatical issues
Science
News & Media
Wiki
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
4 human-written examples
Human imaging studies have reported that activations in NCF and the rostroventral medulla are correlated during repeated noxious stimulation [14], and also that NCF may activate during punctate mechanical hyperalgesia, suggesting that it is involved in a alterations in descending pain modulation [16].
Science
Indeed, proinflammatory lipid A alterations have been reported in Pa strains of CF patients [ 17].
Science
Because it is also well known that Hif1α deficiency causes cardiac looping disturbance [ 36, 37, 47], it is reasonable to think that a alterations in the metabolism of retinoic acid might influence a correct dosage of Hif1α.
Science
Current evidence suggests that Candida albicans acquires azole resistance by employing multiple mechanisms that include (a) alterations in the azole-target protein Erg11p (b) upregulation of the ERG11 gene [ 1- 4] as well as (c) failure of drug accumulation mediated by efflux pumps.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
So they do their A-line skirts, then make an alteration on a neckline.
News & Media
Start an alterations or mending business.
Wiki
Purchase your dress, and set up an alterations schedule.
Wiki
DesbloqueioBR plans to charge between 250 and 375 dollars to unlock an iPhone, an alteration that may cost service providers big money.
News & Media
Time is an aspect of change, where change means an alteration in a dynamic network of relationships that define the world.
News & Media
The figure is an alteration of a figure by Winn (Seager et al. 2010).
Science
A concussion is an alteration in mental status induced by trauma, which may or may not involve loss of consciousness.
News & Media
Expert writing Tips
Best practice
When referring to multiple alterations, use the plural form "alterations" without the indefinite article "a". For example, instead of "a alterations", write "alterations were made".
Common error
Avoid using the indefinite article "a" with plural nouns like "alterations". The article "a" is used only with singular, countable nouns. Using "a alterations" is a common grammatical error that should be corrected to simply "alterations".
Source & Trust
82%
Authority and reliability
2.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a alterations" is intended to function as a noun phrase, but it is grammatically incorrect. It attempts to quantify the plural noun "alterations" with the singular indefinite article "a". Ludwig AI confirms this is not considered correct English.
Frequent in
Science
50%
News & Media
37%
Wiki
13%
Less common in
Formal & Business
0%
Encyclopedias
0%
Academia
0%
Ludwig's WRAP-UP
In summary, the phrase "a alterations" is generally considered grammatically incorrect in standard English. Ludwig AI also confirms this assessment. While examples can be found in various sources, primarily in science, news & media and Wiki, it is advisable to avoid this phrase in formal writing. Correct alternatives include "alterations", "some alterations", or "an alteration" (if referring to a single change). Be mindful of article usage to maintain grammatical accuracy and clarity in your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
alterations
Removes the indefinite article to form a grammatically correct plural noun phrase.
some alterations
Replaces the indefinite article "a" with "some" to correctly quantify the plural noun.
an alteration
Changes "alterations" to the singular form "alteration" and uses the correct indefinite article.
certain alterations
Uses "certain" to specify a particular subset of alterations, improving clarity.
various alterations
Emphasizes the diversity of alterations being referred to.
several alterations
Indicates that there are multiple alterations, providing a clearer sense of quantity.
modifications
Uses a synonym for "alterations" to avoid the grammatical issue, retaining the plural form.
changes
Replaces "alterations" with a more general term, still implying multiple changes.
adjustments
Offers another synonym for "alterations", suitable in contexts where precision is less critical.
specific alterations
Highlights that the alterations are particular and well-defined.
FAQs
How can I correctly use "alterations" in a sentence?
Use "alterations" as a plural noun without the indefinite article "a". For example, "The plans required several alterations" is correct.
What is the difference between "an alteration" and "alterations"?
"An alteration" is singular, referring to one change, while "alterations" is plural, referring to multiple changes. Use the appropriate form depending on the context.
Is it ever correct to say "a alterations"?
No, "a alterations" is grammatically incorrect because "a" is an indefinite article used only with singular nouns. Use "alterations" without "a" when referring to multiple changes.
What are some alternatives to "a alterations" that I can use?
Instead of "a alterations", you can use alternatives like "some alterations", "several alterations", or simply "alterations" depending on the context.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
2.1/5
Expert rating
Real-world application tested