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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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demonstrate to be

Grammar usage guide and real-world examples

USAGE 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

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 Guardian

The investigated processing methods and materials are cost effective and demonstrate to be able to produce composites with high homogeneity.

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.

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.

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Human-verified similar examples from authoritative sources

Similar Expressions

28 human-written examples

The theory, at last, was demonstrated to be correct.

This claim has been demonstrated to be false.

News & Media

The New York Times

"It was never demonstrated to be the case.

"The claims about the CFA have been demonstrated to be complete bunkum," said Victorian senator Kim Carr.

News & Media

The Guardian

"But that has not been demonstrated to be true anywhere else".

News & Media

The New York Times
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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".

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

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.

Expression frequency: Common

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.

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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Source & Trust

85%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Most frequent sentences: