have been introduced

USAGE SUMMARY

The phrase "have been introduced" is grammatically correct and can be used in written English.
This phrase is the past participle of the verb "introduce" and is used to indicate a past action or event. For example: "John and Jane have been introduced to each other by their mutual friend."

✓ Grammatically correct

News & Media

Science

Encyclopedias

Academia

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Safeguards have been introduced.

The Guardian

Many have been introduced into North America.

Encyclopedia Britannica

New machines have been introduced.

The Guardian - Business

What changes have been introduced?

The Guardian - Money

Bans have been introduced in Massachusetts and New York.

The New York Times

Several species have been introduced into New Zealand.

Encyclopedia Britannica

What types of industries have been introduced?

The New York Times

But some novelties have been introduced.

The Guardian

No child curfew zones have been introduced.

The Guardian

Additionally, population balances have been introduced.

Chemical Engineering Science

Four seagrass species also have been introduced.

Journal of Experimental Marine Biology and Ecology

Expert writing Tips

Best practice

When using "have been introduced", ensure the context clearly specifies what has been introduced and the circumstances surrounding its introduction. Provide enough detail to avoid ambiguity.

Common error

Avoid overuse of the passive voice with "have been introduced". Whenever possible, specify the agent or actor who performed the introduction to make your writing more direct and engaging.

Linguistic Context

The phrase "have been introduced" serves as the past participle form of the verb 'introduce' within a present perfect passive construction. Ludwig examples show it indicating that something has been brought into use or existence, often with ongoing relevance.

Expression frequency: Very common

Frequent in

News & Media

37%

Science

33%

Academia

13%

Less common in

Encyclopedias

10%

Formal & Business

7%

Wiki

0%

Ludwig's WRAP-UP

In summary, the phrase "have been introduced" is a grammatically correct and frequently used construction in English. As Ludwig AI confirms, it functions as the past participle in a present perfect passive structure, indicating that something has been newly brought into a system or context with ongoing relevance. Its neutral to formal register makes it suitable for various settings, including news, science, and business. While the phrase is generally well-understood, writers should aim to specify the agent performing the introduction for clarity. By considering alternatives like "have been implemented" and avoiding overuse of the passive voice, you can improve the precision and impact of your writing.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

have been implemented

Focuses on the practical application and enforcement of something.

have been initiated

Emphasizes the starting or beginning of something new.

have been established

Highlights the creation and setting up of something for the long term.

have been launched

Suggests a formal start or unveiling of something, often with publicity.

have been rolled out

Indicates a gradual and widespread introduction or deployment.

have been inaugurated

Implies a formal and ceremonial introduction or beginning.

have been pioneered

Suggests the first or innovative introduction of something.

have been developed

Focuses on the process of creating and improving something before its introduction.

have been unveiled

Highlights the act of revealing or making something public for the first time.

have been instigated

Emphasizes the act of starting or causing something to begin.

FAQs

How can I use "have been introduced" in a sentence?

The phrase "have been introduced" indicates that something new has been brought into a system or context. For example, "New safety measures "have been introduced" to prevent accidents".

What are some alternatives to "have been introduced"?

You can use alternatives such as "have been implemented", "have been initiated", or "have been established" depending on the specific nuance you want to convey.

Is it better to use active or passive voice with "have been introduced"?

While "have been introduced" is in the passive voice, using the active voice can often make your writing clearer and more direct. For example, instead of "New rules "have been introduced"", you could say "The committee introduced new rules".

What's the difference between "have been introduced" and "were introduced"?

"Have been introduced" implies a present relevance or ongoing effect of the introduction, while "were introduced" refers to a past event without necessarily emphasizing its present state. For instance, "These concepts "have been introduced" and are now part of the curriculum" versus "These concepts were introduced in the 1990s".