it was proved vs it has been proved

Both "it was proved" and "it has been proved" are correct, but they are used in different contexts. "It was proved" is used when referring to a specific past event, while "it has been proved" is used when emphasizing the present relevance of a past action.

Last updated: March 27, 2024 • 2358 views

This phrase is correct and commonly used when referring to a specific past event.

"it was proved"

Use "it was proved" when talking about something that was demonstrated or established in the past.

Examples:

It was proved that he was innocent.
The theory was proved wrong by the new evidence.

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Though it was proved that I had an alibi and you later withdrew the accusation.
Though it was proved that I had an alibi and you later withdrew the accusation.
Of course, it was proved beyond any doubt... that Esme Cordelia Hoggett was not a felon.
This sentence was included in Directive 2002/73, as it was proved by experience and research that a serious reason of the reluctance of women to have recourse to courts or even to competent administrative authorities is the lack of evidence.
The accused has confessed because it was proved as soon as we got the letter.
If, therefore, it was proved that a dump did exist at this spot, a causal connection could be established between the workers' deaths and the presence of asbestos.
It is, however, recalled that during the investigation leading to the anti-circumvention measure in 1997 it was proved that the remedial effect of the duty on Chinese bicycles was undermined in terms of sales prices, and dumping existed.
as stipulated and at the time indicated in advance by the air carrier, the tour operator or an authorised travel agent and it was proved that the passenger has received a notification, or, if no time is indicated,
It was proved that he was innocent.
It was proved conclusively which crimes have been committed by Dr. Johnson.
It was proved today at the funeral how well-liked he was.
It was proved to the satisfaction of the Commission that the 3 % tax was borne by the raw materials incorporated in SWR sold domestically while it had not been collected in respect of the raw materials incorporated in SWR when exported to the Community.
...where Mrs. Germina Maldonado lives... ...who is Zubiria's widow... ...to notify that in this cause... ...it was proved that her late husband...
It was proved to me that bottom gill-netting was equally predatory or even more so.
Eventually it was proved spammer (hacker) why he was killed.
It was never proved that he was my son.
Arson was suspected, though it was never proved.
Yesterday it was until I unintentionally proved it wasn't.
Someone close to him, his mother, I believe, although it was never proved, understandably upset, made a decision.
In humans, it's only ever been theorized, but it was never proved.

Alternatives:

it was demonstrated
it was established
it was shown

This phrase is correct and commonly used when emphasizing the present relevance of a past action.

"it has been proved"

Use "it has been proved" when you want to highlight that something was demonstrated or established in the past and still holds true.

Examples:

It has been proved that exercise is beneficial for health.
The effectiveness of the treatment has been proved by numerous studies.

Show examples from the web [+]

Regarding things from the psychological point of view, it has been proved that tough punishments have never had a corrective role, but they generate hatred, violence, and a wish for revenge against fellow people and authorities.
Immunological testing may not be used if the animals have been vaccinated unless it has been proved the vaccine used does not interfere with the testing method applied.
"level of assurance" means the degree to which the verifier is confident in the verification conclusions that it has been proved whether or not the information reported for an installation taken as a whole is free from material misstatement;
Indeed, it has been proved that this set of operations causes the animals greater stress and suffering than any other farming practice.
It has been proved that a dedicated few can hold a majority to ransom.
It has been proved - and the statistics are extremely clear in this regard - that it is, in particular, excessive speed, incomplete and outdated training and a certain lack of concern behind the wheel which are at the basis of this new human scourge.
However, it has been proved that that is the case.
I believe that once again it has been proved that a smaller European Union country can also play a very creative role when exercising the presidency.
Furthermore, it has been proved on other occasions that, despite problems, relatively transparent elections can be held in Africa.
Until it has been proved that all phthalates are harmless, there is no place for plasticisers in toys for children under three.
First, it has been proved that diplomacy has potential, provided that it is accompanied by patience and persistence.
Furthermore, it has been proved that the existence of clear international rules governing minimum capital requirements (Basel I) contributes to the security of financial and legal trade.
One specific point was adopted, under which the European Parliament 'calls on the Commission to propose a faster approval procedure within the EU for the importation of a new GM feed variant once it has been proved safe'.
The use of fewer or other variables is acceptable if it has been proved previously that the (multiple) correlation coefficient reaches 70 %.
subjected to other procedures insofar as it has been proved by the manufacturer, to the satisfaction of the technical service, that they are equivalent.
J. whereas it has been proved that empowering women accelerates the meeting of all the other MDGs in reducing poverty and improving demographic, social and economic indicators,
E. whereas it has been proved that empowering women accelerates the meeting of all the other Millennium Development Goals in reducing poverty and improving demographic, social and economic indicators,
If we are to succeed, a great deal more is, however, required of all the parties involved, as it has been proved that putting the blame on each other, as we are doing at present, does not produce results.
whereas it has been proved that empowering women accelerates the meeting of all the other MDGs in reducing poverty and improving demographic, social and economic indicators,
whereas it has been proved that empowering women accelerates the meeting of all the other MDGs in reducing poverty and improving demographic, social and economic indicators,

Alternatives:

it has been demonstrated
it has been established
it has been shown

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it was proved vs it has been proved

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