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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
they have required
Grammar usage guide and real-world examplesUSAGE SUMMARY
"they have required" is correct and usable in written English.
You can use it to indicate that someone or many people have demanded or requested something. Example sentence: The students have required extra time to complete the assignment.
✓ Grammatically correct
News & Media
Science
Formal & Business
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
26 human-written examples
They have required residents to register, but many are still in the process of doing so.
News & Media
Instead, they have required every pensioner seeking such compensation to file suit.
News & Media
They have required reinforcement by special steel pillars that hold in place chain-link fencing to capture any coal as it crumbles off the walls.
News & Media
10.41am: European countries have said that, because of their social security "safety net", they have required a stimulus less than the US.
News & Media
They're so expensive — many billions apiece — that historically they have required government guarantees, because Wall Street is loath to invest so much in such politically fraught projects.
News & Media
Specifically, they have required European competitors such as Barclays and Deutsche Bank to provide more capital to their US operations or to leave.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
34 human-written examples
And they've required studies of the cost of regulatory compliance.
News & Media
But they had required a brilliant save from Wojciech Szczesny to preserve the goalless stalemate, and they were booed off by their own supporters at the end.
News & Media
Several other news organizations -- Brill's Content and Inside.com, among others -- decided not to enforce no-disparagement clauses that they had required their employees to sign.
News & Media
When it finally arrived, it was Jesús Navas who scored to send Spain to the top of Group C. They had required two superb saves from Iker Casillas to survive, while Croatia were also left bemoaning two possible penalties.
News & Media
"Third party integrations have existed, but they've required the IT department to make them work.
News & Media
Expert writing Tips
Best practice
When using "they have required", ensure the subject 'they' is clearly defined to avoid ambiguity. For example, specify who is doing the requiring (e.g., 'The company has required all employees...').
Common error
Avoid using "they has required". The correct form is "they have required" because 'they' is a plural pronoun and requires the plural form of the auxiliary verb 'have'.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they have required" typically functions as a verb phrase indicating an action taken by a group or entity. It specifies that a demand, obligation, or prerequisite has been set by 'they'. Ludwig AI confirms its standard grammatical correctness.
Frequent in
News & Media
44%
Science
36%
Formal & Business
20%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "they have required" is a grammatically sound and versatile phrase used to indicate that a group has imposed a requirement. As highlighted by Ludwig, it is correct and usable in written English. This phrase is commonly found in news, scientific, and business contexts, signaling its broad applicability. To ensure clarity, specify the subject 'they' and avoid incorrect subject-verb agreement such as "they has required". Consider related phrases like "they mandated" or "they stipulated" for nuanced expression.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
they mandated
Replaces 'required' with a more formal synonym, implying a legal or official obligation.
they stipulated
Indicates a specific condition or demand that was part of an agreement.
they demanded
Emphasizes a firm request or insistence on something.
it was a requirement for them
Restructures the sentence to focus on the 'requirement' as a noun.
they set as a prerequisite
Highlights that something must be fulfilled before something else can happen.
they insisted upon
Similar to 'demanded' but can also imply a persistent or repeated request.
they prescribed
Suggests a formal recommendation or instruction, often in a medical or technical context.
they dictated
Implies absolute control and the imposition of something without negotiation.
it was obligatory for them
Highlights the compulsory nature of something.
they saw fit to request
Indicates the phrase is deemed suitable or necessary.
FAQs
How can I use "they have required" in a sentence?
Use "they have required" to indicate that a group or entity has mandated or demanded something. For example, "The instructors have required students to submit their assignments online."
What are some alternatives to "they have required"?
You can use alternatives like "they mandated", "they stipulated", or "they demanded" depending on the specific nuance you want to convey.
Is it correct to say "they has required"?
No, it is not correct. The correct phrase is "they have required". "Have" is used with the plural pronoun "they", while "has" is used with singular pronouns such as "he", "she", or "it".
What's the difference between "they have required" and "they are required"?
"They have required" means that they (a specific group) have imposed a requirement on someone else. "They are required" means that they (a specific group) are subject to a requirement imposed by someone else.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested