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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
they contributed about
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "they contributed about" is correct and usable in written English.
You can use it when discussing the approximate amount or extent of someone's contribution to a project, study, or event. Example: "In the recent study, they contributed about 30% of the total funding required for the research."
✓ Grammatically correct
News & Media
Science
Formal & Business
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 examples from authoritative sources
Exact Expressions
3 human-written examples
Research from the East of England Development Agency showed that between 50,000 and 80,000 of the region's 2.8 million "economically active" people were migrant workers, and they contributed about £360m a year to the regional economy.
News & Media
According to the government, last year 210,000 visas were issued to Chinese nationals and they contributed about £300m to the UK economy.
News & Media
Overall, the average annual reductions were similar for event and case fatality rates, indicating that they contributed about equally to the decline in mortality.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
In 1987, states kicked in about three quarters of what public colleges spent on education; now they contribute about half.
News & Media
Although coal-fired power plants generally keep getting cleaner, they contribute about three-fifths of all sulfur dioxide, one-third of all mercury, and one-fifth of all nitrogen oxide emissions in the United States.
News & Media
If WIMPs exist, theory predicts that they contribute about ten times as much mass to the universe as the protons, neutrons and electrons of which familiar "normal" matter is made.
News & Media
Small and medium-scale exporters are the worst hit, and they contribute about 67% the industrys sales.
News & Media
Springs are the gifts of nature on the earth as they contribute about eighty essential nutrients that are involved in more than 7000 enzymatic processes in the human body.
Science
Modestly equipped, and managed mostly by medical professionals themselves, these are realities representing the vast middle and lower classes, and they contribute about 40% of available beds for the country.
Science
The principal differences are the presence of the long chain n-3 fatty acids eicosapentaenoic acid (EPA; 20 5n-3) and docosahexaenoic acid (DHA; 22 6n-3) in the fish oil containing emulsion where they contribute about 3.6% of fatty acids (2.5% of fatty acids as EPA and 1.1% of fatty acids as DHA) [ 29].
Science
Therefore, although there were five mice per cage, we conclude they each contributed about equally to the number of wheel revolutions.
Science
Expert writing Tips
Best practice
When using "they contributed about", ensure the context clearly indicates who "they" refers to and what they contributed to. For example: "The volunteers contributed about 200 hours to the project."
Common error
Avoid using "they contributed about" when the contribution is precisely known. This phrase indicates an approximation, so use a more exact term if the figure is confirmed. For example, don't say "They contributed about $1000" if the exact amount was $1000; instead, say "They contributed $1000."
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they contributed about" functions as a verb phrase indicating an approximate amount or share provided by a group or entity. Ludwig AI confirms its grammatical correctness and usability in various contexts.
Frequent in
News & Media
33%
Science
33%
Formal & Business
33%
Less common in
News & Media
0%
Science
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, "they contributed about" is a grammatically sound and frequently used phrase to indicate that a group has provided an approximate amount of something. As Ludwig AI confirms, it appears across a variety of sources, including news, scientific literature, and business documents. While appropriate for neutral contexts, more formal situations might benefit from more precise language. Remember to use this phrase when you want to convey an estimation rather than a precise measurement and ensure the context makes clear who "they" refers to.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
they provided approximately
Replaces "contributed" with "provided" and "about" with "approximately", emphasizing the act of giving in an estimated amount.
they donated roughly
Substitutes "contributed" with "donated" and "about" with "roughly", suggesting a charitable or voluntary giving of an estimated amount.
their contribution was around
Restructures the sentence to focus on the contribution itself, using "around" to indicate approximation.
they gave in the ballpark of
Uses the idiomatic expression "in the ballpark of" to convey an approximate amount given.
they added close to
Replaces "contributed" with "added" and "about" with "close to", implying an increase by an estimated quantity.
they furnished nearly
Substitutes "contributed" with "furnished" and "about" with "nearly", indicating the supply of something in an almost exact quantity.
their share was estimated at
Shifts the focus to the share or portion, using "estimated at" to express approximation.
they allocated in the neighborhood of
Uses the phrase "in the neighborhood of" to denote an approximate allocation or assignment.
they chipped in something like
Employs the phrasal verb "chipped in" to indicate a contribution, with "something like" suggesting approximation.
they put up in the vicinity of
Uses the phrase "in the vicinity of" for an approximate value and replaces "contributed" with the expression "put up".
FAQs
How can I use "they contributed about" in a sentence?
You can use "they contributed about" when referring to an estimated or approximate amount that a group provided. For instance, "During the charity drive, they contributed about half of the total donations."
What's a good alternative to "they contributed about"?
Alternatives include phrases like "they provided approximately", "their contribution was around", or "they donated roughly" depending on the context.
Is it appropriate to use "they contributed about" in formal writing?
While grammatically correct, "they contributed about" is more suitable for neutral or informal contexts. In formal writing, consider using phrases like "they provided approximately" or "their contribution amounted to approximately" for added precision.
What's the difference between "they contributed about" and "they contributed exactly"?
"They contributed about" indicates an approximation, whereas "they contributed exactly" indicates a precise amount. The choice depends on whether the amount is known precisely or is merely an estimate.
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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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested