Used and loved by millions
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
have been formulated
Grammar usage guide and real-world examplesUSAGE SUMMARY
'have been formulated' is a correct and usable part of a sentence in written English.
You can use it when you want to emphasize that a plan or idea has been crafted or created in a deliberate and organized way. For example, "We have developed a set of guidelines that have been formulated to ensure the safety of all participants."
✓ Grammatically correct
Science
Encyclopedias
News & Media
Alternative expressions(20)
have been superseded
have been made up
were taken
have been offered
have been kept
have been taken up
have been dismissed
have been implemented
have been strengthened
have been solving
have received notice
have been excluded
have been improved
have been attributed
have been upgraded
have been forwarded
have been caught up
have been trained
have been instituted
have been determined
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
60 human-written examples
Many rules of inference by circumscription have been formulated.
Encyclopedias
International guidelines have been formulated to protect the rights of trial subjects.
News & Media
Two theories have been formulated to explain how birds use the Sun for orientation.
Encyclopedias
A comparison of the two theories that have been formulated is in order.
Encyclopedias
Thus, the models have been formulated to account for this conversion, which is known as dolomitization.
Encyclopedias
"There's a common misunderstanding that American Ambassadors go and have tea and carry messages that have been formulated in Washington.
News & Media
Altogether, eight models have been formulated.
Science
At least two solutions to this problem have been formulated.
Science
New stability criteria have been formulated in terms of LMI.
Both quarter car and half car models have been formulated.
The specific requirements have been formulated by TSOs.
Expert writing Tips
Best practice
Use "have been formulated" when you want to emphasize that something (like a plan, strategy, or theory) has been carefully and deliberately created or developed.
Common error
Avoid overusing passive voice. While "have been formulated" is grammatically correct, excessive passive voice can make your writing sound weak and indirect. Try to rephrase sentences to use active voice where appropriate to improve clarity and impact.
Source & Trust
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "have been formulated" functions as a passive verb phrase. It indicates that a particular idea, plan, or set of rules has been created or developed. This phrase is commonly used to emphasize the action rather than the actor, consistent with Ludwig's AI.
Frequent in
Science
60%
Encyclopedias
15%
News & Media
10%
Less common in
Formal & Business
5%
Wiki
3%
Reference
2%
Ludwig's WRAP-UP
In summary, "have been formulated" is a grammatically correct and frequently used passive verb phrase. According to Ludwig, it is suitable for emphasizing the creation or development of plans, ideas, or strategies, particularly when the action is more important than the actor. This phrase is most commonly found in scientific and academic contexts, reflecting a formal and objective tone. When writing, consider whether emphasizing the action over the actor is your intention and avoid overuse of passive voice to maintain clarity and impact. Remember to look at alternatives such as "have been developed" or "have been created" to enhance your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
have been created
Focuses on the act of bringing something new into existence.
have been developed
Highlights a process of growth or advancement.
have been established
Emphasizes the act of setting something up on a firm or permanent basis.
have been articulated
Focuses on expressing ideas clearly and verbally.
have been devised
Highlights the act of planning or inventing something complex.
have been designed
Emphasizes the intention and planning behind the creation of something, often with a specific purpose.
have been demonstrated
Emphasizes proof or evidence of something.
have been identified
Highlights the act of recognizing or discovering something.
have been initiated
Focuses on the beginning or starting of a process or project.
have been attributed
Emphasizes assigning a cause or characteristic to something.
FAQs
How can I use "have been formulated" in a sentence?
You can use "have been formulated" to describe how a plan, idea, or strategy was created. For example, "The new policies "have been formulated" to address the increasing concerns about data privacy."
What are some alternatives to "have been formulated"?
Alternatives include "have been developed", "have been created", or "have been established", depending on the specific context.
When is it appropriate to use the passive voice construction "have been formulated"?
Use the passive voice when the action is more important than the actor, or when the actor is unknown or irrelevant. For example, "Guidelines "have been formulated" to ensure ethical research practices."
Is it better to say "have formulated" or "have been formulated"?
The choice depends on whether you want to emphasize the actor (active voice: "we have formulated") or the action itself (passive voice: ""have been formulated""). If the 'doer' is not important, use the passive form.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested