it was introduced vs it has been introduced

Both phrases are correct, but they are used in different contexts. 'It was introduced' is used to talk about an action that happened in the past, while 'it has been introduced' is used to talk about an action that happened in the past and has relevance to the present.

Last updated: March 27, 2024 • 5796 views

it was introduced

This phrase is correct and commonly used in English to talk about an action that happened in the past.

Use 'it was introduced' when referring to an action that took place in the past.

Examples:

The new policy was introduced last week.
The concept was introduced in the previous meeting.

Show examples from the web [+]

Actually, it was introduced in 1902.
Basically, the reason you haven't heard about this program is because it was introduced last year on June 29.
Mr President, since it was introduced in 1957, the common agricultural policy has provided us with abundant quantities of food at reasonable prices.
The limiting of votes, in the circumstances in which it was introduced, also amounts to a State measure.
When it was introduced, it required considerable investment; it was fairly expensive.
It is astonishing to note that the effects of the euro on capital movements were not properly understood before it was introduced.
Since it was introduced at the beginning of this year, the volume of private bonds issued in euros has increased by over 50%.
We want at last to use the flexibility instrument for the purpose for which it was introduced, namely for unforeseen needs.
First of all, the ban was not imposed for nothing; it was introduced to stop the BSE crisis.
Its lowest value during the crisis was 1.20 and when it was introduced it was worth 1.15.
The imposition of the applied Most Favoured Nation duty shall cease at the end of the marketing year during which it was introduced.
The figures for the application of the law on blasphemy during the period from 1986 (the year it was introduced) to August 2009 tell a tragic story: charges were laid against 964 people.
The suspension of the treatment granted in Article 7(1) shall be terminated at the end of the marketing year in which it was introduced.
The imposition of the applied MFN duty shall cease at the end of the marketing year during which it was introduced;
the management authority of the Member State concerned has verified that the specimen in question could have been imported for commercial purposes in accordance with Article 4(2) of Regulation (EC) No 338/97 at the time when it was introduced into the Union.
It was introduced because we were aware of the problem and, since then, there has never been the required number of Members present in the Chamber to request that the quorum be established, so it was always deemed to exist.
Since it was introduced in 1992, the prohibition on retaining on board and using drift-nets of a length greater than 2.5 Km and, since 2001, drift-nets of any length, has been systematically infringed on a massive scale by the Italian fishing fleet.
It was introduced in the Spanish Corporate Tax Law 43/1995 of 27 December by Article 2(5) of Law 24/2001 of 27 December [11].
The so-called environmental guarantee is even a step backwards compared with the time when it was introduced.
So it truly was a surprise when it was introduced to Los Angeles auto show.

Alternatives:

it got introduced
it was presented
it was unveiled
it was launched
it was brought in

it has been introduced

This phrase is correct and commonly used in English to talk about an action that happened in the past and has relevance to the present.

Use 'it has been introduced' when referring to an action that took place in the past and still has an impact or relevance in the present.

Examples:

The new software has been introduced to improve efficiency.
The changes have been introduced to address customer feedback.

Show examples from the web [+]

They themselves already have a pretty good idea of why it has been introduced and do not need Europe to tell them.
Now, that it has been introduced, following an amendment of the European Parliament, some Member State fear that this could create a precedent as well as major inconsistencies in their jurisdiction.
Is the Commission satisfied with the performance of the Irish language since it has been introduced, in regard to planning and training of staff of the European Institutions?
Moreover, this system functions excellently where it has been introduced.
That being the case, it is necessary to end the opt-out in Member States where it has been introduced, within a reasonable transitional period.
Dissemination of information on the experiences and lessons learnt from parity democracy as it has been introduced in the constitutions of France and Belgium would be highly useful prior to the European Parliament elections June 2004.
Once it has been introduced, its suitability as a means by which compliance with the requirements of this TSI can be assured, will be assessed by the ERA and the EC.
Does the Commission intend to take additional measures to ensure that Member States respect the ban on smoking in public places where it has been introduced, in order to minimise the risks to passive smokers?
The fact that it has been introduced on an equal footing is a cause of satisfaction for us and I would essentially like to thank the Commission, the Commissioner and Marie Claude Blin, for their efforts in reaching this agreement;
Once it has been introduced, its suitability as a means by which application of this CWA will assume compliance with requirements of this TSI, will be assessed by the ERA and the EC.

Alternatives:

it has been implemented
it has been launched
it has been unveiled
it has been presented
it has been brought in

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it was introduced vs it has been introduced