have proven before

USAGE SUMMARY

The phrase "have proven before" is correct and usable in written English.
It can be used when referring to evidence or results that have been established in the past. Example: "The results of our previous studies have proven before that this method is effective in improving performance."

✓ Grammatically correct

Science

News & Media

Formal & Business

Human-verified similar examples from authoritative sources

Similar Expressions

60 human-written examples

But as so many athletes have proved before, acknowledgement and action are not easily joined.

The New York Times - Sports

But as Deafinitely have proved before, and hope to prove again with Grounded, nothing is lost when BSL and English hold the stage together.

The Guardian

For as they have proved before, the American rightwingers now pushing Obama towards open-ended warfare have few equals as recruiting sergeants for terror.

The Guardian

(ell_{1}(s)) is a positive multiple of (k_{1}(s)), so, as we have proved before, it is positive for (sin 0,1)).

Boundary Value Problems

Afflatus has an unhappy habit, as Malick has proved before, of subsiding into a monotone.

The New Yorker

As Tosches has proved before, in arresting books such as "In the Hand of Dante," he knows a lot about some fascinating things — music, literature, alcohol, and sex.

The New Yorker

Still, as Mr. Shanley, the playwright and screenwriter of such works as "Four Dogs and a Bone" and "Moonstruck," has proved before, well crafted and shallowly facile are not mutually exclusive.

The New York Times

It just works, as field tests have proved before launching its latest version.

TechCrunch

"Whole Foods is perceived as high price and high quality, so unless carefully managed, there can be a disconnect". Besides, Mackey has proven before that his socially conscious impulses only go so far.

Forbes

"But we've proved before that we can win if he doesn't shoot the ball well, man.

The New York Times - Sports

So too is Mr. Whitacre's competence in managing a complex manufacturing business -- something Alan Mulally of Ford and Sergio Marchionne of Chrysler, also chief executive of Fiat, had proved before heading to Detroit.

The New York Times

Expert writing Tips

Best practice

When using "have proven before", ensure the context clearly indicates what has been proven and the time frame in which it was established.

Common error

Avoid using "have proven before" when the 'before' is already implied within the context. For example, instead of saying 'These results have proven effective before, in prior studies', it's better to write 'These results have proven effective in prior studies'.

Linguistic Context

The phrase "have proven before" functions as a verb phrase, indicating a past action of demonstrating or establishing something as true. It suggests that evidence or results have been presented in the past to support a claim. According to Ludwig AI, the phrase is grammatically correct.

Expression frequency: Missing

Frequent in

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Less common in

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Ludwig's WRAP-UP

The phrase "have proven before" is used to indicate that something has been validated or demonstrated in the past. Ludwig AI confirms its grammatical correctness. While the phrase is valid, the term 'before' can sometimes be redundant if the context already implies past evidence. Related alternatives include "has demonstrated previously" and "have shown in the past". The phrase tends to appear in neutral to formal registers, emphasizing factual accuracy. Because there are no usage examples for the phrase available in the search data, the frequency and authoritative sources remain unavailable.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

has demonstrated previously

Uses 'demonstrated' instead of 'proven', emphasizing the act of showing or illustrating something.

have shown in the past

Replaces 'proven' with 'shown', focusing on the evidence presented in prior instances.

has been established earlier

Shifts from 'proven' to 'established', highlighting the confirmation or validation of something at an earlier time.

have validated previously

Employs 'validated' in place of 'proven', stressing the act of confirming the accuracy or correctness beforehand.

has confirmed in previous instances

Substitutes 'proven' with 'confirmed', focusing on the verification of something in earlier occurrences.

have substantiated before

Replaces 'proven' with 'substantiated', underscoring the provision of evidence to support something in the past.

has verified in earlier cases

Employs 'verified' instead of 'proven', stressing the confirmation of truth or accuracy in prior examples.

have borne out in the past

Uses 'borne out' in place of 'proven', highlighting the confirmation of something through past experiences or evidence.

has been evinced previously

Replaces 'proven' with 'evinced', focusing on the clear display or indication of something beforehand.

have attested to before

Substitutes 'proven' with 'attested to', underscoring the act of providing evidence or testimony in the past.

FAQs

How can I use "have proven before" in a sentence?

You can use "have proven before" to indicate that something has been demonstrated or validated at a previous time. For instance, 'Studies "have proven before" that exercise improves cognitive function'.

What are some alternatives to "have proven before"?

Alternatives to "have proven before" include "has demonstrated previously", "have shown in the past", or "has been established earlier".

Is it redundant to use "have proven before"?

Sometimes, yes. The word "before" can be redundant if the context already implies a past occurrence. For example, in the sentence "These results "have proven" effective before", the word "before" might be unnecessary.

What's the difference between "have proven before" and "have proven"?

"Have proven" generally means something has been demonstrated to be true. Adding "before" ("have proven before") emphasizes that the demonstration or validation occurred at a previous time. The first is more general, while the second adds an explicit temporal reference.