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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
were based on
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'were based on' is correct and usable in written English.
You can use it to describe a circumstance that has influenced a decision or outcome. For example, "The project parameters were based on the findings of last year's study."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(18)
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
Fantasies were based on American realities.
News & Media
The cases were based on confessions.
News & Media
Both reports were based on listener surveys.
News & Media
Past estimates were based on adults.
News & Media
Many were based on Iraqi defectors.
News & Media
"The police charges were based on hearsay.
News & Media
The EU sanctions were based on these.
News & Media
Later models were based on the Ford Mustang.
News & Media
Those sanctions were based on drug tests.
News & Media
Promotions were based on merit tests.
News & Media
Many Nixon stories were based on reality.
News & Media
Expert writing Tips
Best practice
When using "were based on", ensure that the subject clearly identifies what is being founded or derived and the object specifies the source or foundation. Clarity prevents ambiguity.
Common error
Avoid using "were based on" when the subject is vague or undefined. For example, instead of saying "Decisions were based on data", specify whose decisions and which data: "The management's decisions were based on the sales data from Q2."
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "were based on" functions as a passive construction, indicating that a subject's characteristics, actions, or conclusions have their origins in something else. As Ludwig AI confirms, this phrase is usable in written English and, according to the examples, is commonly found in news and academic writing.
Frequent in
News & Media
50%
Science
35%
Wiki
10%
Less common in
Academia
3%
Formal & Business
1%
Reference
1%
Ludwig's WRAP-UP
In summary, the phrase "were based on" is a versatile and frequently used expression that indicates the foundation or origin of something. As confirmed by Ludwig AI, this passive construction is grammatically sound and appropriate for a variety of contexts. It is commonly found in News & Media, Science, and Wiki sources. When using "were based on", be sure to clearly identify both the subject and the source to avoid ambiguity. Alternatives like "stemmed from" or "founded upon" can be used to add nuance. Its widespread usage and clear grammatical function make it a valuable asset in both formal and informal writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
founded upon
Stresses the establishment of something on a particular basis.
had its basis in
Indicates the fundamental element or principle.
derived from
Emphasizes the source from which something is obtained.
were grounded in
Highlights a firm or solid foundation.
stemmed from
Focuses on the origin or root cause.
rested on
Implies reliance or dependence on something.
predicated on
Highlights the assumptions or conditions upon which something relies.
were rooted in
Emphasizes deep origins or connections.
originated from
Points to the initial starting point or creation.
were constructed from
Highlights that something was built or assembled using specific components.
FAQs
How can I use "were based on" in a sentence?
Use "were based on" to indicate the foundation or origin of something. For example, "The movie's plot "was based on" a true story".
What are some alternatives to "were based on"?
You can use alternatives such as "stemmed from", "derived from", or "founded upon", depending on the specific context.
Is it correct to say "was based on" instead of "were based on"?
Yes, "was based on" is correct when referring to a singular subject, while "were based on" is used for plural subjects. For instance, "The decision was based on evidence", but "The decisions "were based on" evidence".
What is the difference between "were based on" and "were inspired by"?
"Were based on" implies a direct foundation or source, while "were inspired by" suggests influence. For example, "The design was based on historical documents" means it directly replicated those documents, whereas "The design "were inspired by" historical documents" means it drew ideas from them but is not a direct copy.
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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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested