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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
demonstrate to be
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'demonstrate to be' is not correct and usable in written English.
It should be replaced with 'demonstrate that.' For example: "The experiment demonstrated that excessive caffeine consumption can have an adverse effect on a person's health."
⚠ May contain grammatical issues
Science
News & Media
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
32 human-written examples
When Gaddafi's son Saif Al Islam was invited to speak at the London School of Economics in 2009, after he arranged a controversial payment of £1.5m, Amin and a handful of activists turned up to demonstrate, to be attacked by pro-Gaddafi thugs on the university steps.
News & Media
The investigated processing methods and materials are cost effective and demonstrate to be able to produce composites with high homogeneity.
Science
Compound L demonstrate to be able to detect and quantify the minimal amounts of 1.3 μM/3.3 μM of Cu2 +.
Most of the compounds demonstrate to be active against α-glucosidase, and quite inactive/completely inactive against β-glucosidase.
Science
The Wiener-based methods show least signal distortion and demonstrate to be conservative in retaining the signal information in de-noised data.
In particular, honeybees demonstrate to be able to autonomously abstract complex associations and apply them in tasks involving different sensory modalities within the insect brain.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
28 human-written examples
The theory, at last, was demonstrated to be correct.
News & Media
This claim has been demonstrated to be false.
News & Media
"It was never demonstrated to be the case.
News & Media
"The claims about the CFA have been demonstrated to be complete bunkum," said Victorian senator Kim Carr.
News & Media
"But that has not been demonstrated to be true anywhere else".
News & Media
Expert writing Tips
Best practice
When aiming for precision, replace the phrase "demonstrate to be" with more grammatically sound options like "demonstrate that" or "prove to be".
Common error
Avoid using "demonstrate to be" in formal writing. It's often seen as grammatically awkward; instead, opt for clearer alternatives like "demonstrate that" or "show to be".
Source & Trust
85%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "demonstrate to be" functions as part of a verb phrase aiming to express the act of showing or proving something. However, it's often considered grammatically awkward. As Ludwig AI points out, it's preferable to use "demonstrate that" or "prove to be" for clearer and more standard English.
Frequent in
Science
80%
News & Media
17%
Formal & Business
3%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, while the phrase "demonstrate to be" appears in various sources, it's often considered grammatically incorrect. Ludwig AI suggests that alternatives like "demonstrate that" or "prove to be" offer greater clarity and grammatical accuracy. The phrase is most commonly found in scientific contexts but is generally not preferred in formal writing. Therefore, it's advisable to opt for more precise alternatives to enhance the quality of your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
demonstrate that
Changes the infinitive phrase to a clause, clarifying the object of demonstration.
prove to be
Replaces "demonstrate" with "prove", suggesting a conclusive result.
show to be
Substitutes "demonstrate" with "show", indicating a visual or evident presentation.
establish as
Uses "establish" to denote a firm and recognized confirmation.
confirm as
Replaces "demonstrate" with "confirm", emphasizing verification.
validate as
Uses "validate" to indicate the process of checking or proving accuracy.
evidence as
Implies that something serves as evidence, instead of being directly demonstrated.
reveal as
Suggests a disclosure or unveiling of a previously unknown state.
determine to be
Indicates a process of reaching a conclusion through investigation or analysis.
ascertain to be
Emphasizes the effort of finding something out for certain.
FAQs
What is a grammatically correct alternative to "demonstrate to be"?
A grammatically correct alternative is "demonstrate that". This phrasing provides a clearer and more standard construction in English.
When is it appropriate to use the phrase "demonstrate to be"?
While you may encounter "demonstrate to be" in some contexts, it's generally advisable to use more precise and grammatically accepted alternatives such as "prove to be" or "show to be" for clarity.
How can I rephrase a sentence using "demonstrate to be" for better clarity?
Instead of saying something like "The study demonstrates the drug to be effective", you could say "The study "demonstrates that" the drug is effective" or "The study "proves the drug to be" effective".
What's the difference between "demonstrate to be" and "demonstrate that"?
"Demonstrate that" is a more direct and grammatically sound construction, followed by a clause. "Demonstrate to be" is often considered awkward and less clear; "demonstrate that" provides better sentence structure and precision.
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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
85%
Authority and reliability
2.8/5
Expert rating
Real-world application tested