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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 demonstrated that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "they demonstrated that" is correct and usable in written English.
You can use it when referring to evidence or findings that support a particular claim or conclusion in research or analysis. Example: "In their study, they demonstrated that regular exercise significantly improves mental health."
✓ Grammatically correct
Science
News & Media
Academia
Alternative expressions(18)
they showed that
they proved that
they indicated that
the study demonstrated that
they established that
they revealed that
they found that
the evidence suggests that
it was demonstrated that
they affirmed that
they validated that
they determined that
they understood that
they designated that
they illustrated that
they pointed that
they advocated that
they commented that
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
60 human-written examples
They demonstrated that including gene-gene interactions have better classification power in gene expression analysis.
Science
They demonstrated that the pattern of microbes found on a telephone is unique.
News & Media
But less than 24 hours later, they demonstrated that you cannot keep a good team down.
News & Media
While the results were not meat, they demonstrated that growing food outside the body was possible.
News & Media
And they demonstrated that Jobbik is the only really unified party challenging the Fidesz-KDNP.
News & Media
They demonstrated that this PCR inhibition could be partially resolved by adding nonacetylated bovine serum albumin.
They demonstrated that the f.c.c.
Science
They demonstrated that independent and free African American communities could thrive on their own terms.
Academia
In that same report, they demonstrated that interest in these jobs had leveled off.
News & Media
Moreover, they demonstrated that activations depend on the duration of stimulation.
Science
They demonstrated that SICM can visualize filaments on cell better than atomic force microscopy (AFM).
Science
Expert writing Tips
Best practice
Use "they demonstrated that" to clearly and directly present research findings or provide evidence-based support for a claim.
Common error
Avoid using "they demonstrated that" when the evidence is suggestive but not conclusive. Opt for weaker verbs like "suggested", "indicated", or "implied" to more accurately reflect the findings.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they demonstrated that" functions as a connector that introduces a reported finding or result. It commonly links an actor (the "they") with a verifiable action or discovery. Ludwig's examples highlight the phrase's role in academic and scientific reporting.
Frequent in
Science
70%
News & Media
15%
Academia
10%
Less common in
Formal & Business
5%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "they demonstrated that" is a grammatically correct and frequently used expression for introducing factual findings, particularly in scientific, academic, and news contexts. Ludwig AI confirms its usability in written English. While versatile, it's important to use it accurately and avoid overstating the strength of the evidence. Alternatives like "they showed that" or "they indicated that" can be used depending on the desired emphasis and level of conclusiveness. When writing, ensure the evidence supports a claim that is being provided, especially when using this phrase.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
they showed that
Replaces "demonstrated" with the simpler synonym "showed".
the study demonstrated that
Adds specificity by highlighting the role of study.
they proved that
Substitutes "demonstrated" with "proved", implying a stronger level of evidence.
they established that
Replaces "demonstrated" with "established", highlighting the act of setting something as a fact.
they indicated that
Uses "indicated" instead of "demonstrated", suggesting a less conclusive showing.
they revealed that
Substitutes "demonstrated" with "revealed", suggesting the unveiling of new information.
they found that
Employs "found" instead of "demonstrated", focusing on the discovery aspect.
their findings showed that
Restructures the sentence to emphasize the findings and replaces "demonstrated" with "showed".
the evidence suggests that
Shifts the focus to the evidence and uses "suggests" instead of "demonstrated".
it was demonstrated that
Changes the sentence to passive voice.
FAQs
How can I use "they demonstrated that" in a sentence?
Use "they demonstrated that" to introduce a finding or result that supports a specific point or conclusion. For example, "In their experiment, they demonstrated that regular exercise improves cardiovascular health."
What are some alternatives to saying "they demonstrated that"?
You can use alternatives like "they showed that", "they proved that", or "they indicated that" depending on the context and strength of the evidence.
Is it better to use "they demonstrated that" or "it was demonstrated that"?
Using "they demonstrated that" is generally more direct and active, which can make your writing clearer and more engaging. The passive form, "it was demonstrated that", is acceptable but can sometimes sound less assertive.
When is it inappropriate to use "they demonstrated that"?
Avoid using "they demonstrated that" if the evidence is weak, inconclusive, or based on limited data. In such cases, use phrases like "they suggested that" or "the findings indicate that" to avoid overstating the results.
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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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested