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 not changed
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'have not changed' is correct and usable in written English.
You can use it when referring to the fact that something has remained the same after a period of time. For example, "His feelings for her have not changed since they first met."
✓ Grammatically correct
News & Media
Academia
Science
Alternative expressions(20)
remained constant
persisted unchanged
remained the same
stayed constant
not been altered
held steady
were not modified
have not replaced
have not incorporated
have not charged
have not caught
have not mixed
have not forgotten
have not seen
have not understood
have stayed the same
have remained unchanged
has stayed the same
have been consistent
have remained stable
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
We women have not changed.
News & Media
"The numbers have not changed.
News & Media
Some things have not changed.
News & Media
But things have not changed.
News & Media
Their priorities have not changed.
News & Media
"I have not changed.
News & Media
American tax politics have not changed.
News & Media
But people's questions have not changed.
News & Media
Their formal positions have not changed.
News & Media
"We have not changed a thing".
News & Media
The politics of occupation have not changed.
News & Media
Expert writing Tips
Best practice
When using "have not changed", ensure the context clearly indicates what is being compared to its previous state. This adds clarity and prevents ambiguity.
Common error
Avoid using "have not changed" when referring to something that was never intended to change. Instead, focus on phrases that highlight consistency or maintenance.
Source & Trust
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "have not changed" functions as a stative verb phrase, indicating a lack of alteration or modification over time. As Ludwig AI indicates, it is widely used, signifying its established role in conveying unchanged states. The examples provided by Ludwig demonstrate its applicability across various contexts.
Frequent in
News & Media
65%
Academia
18%
Science
10%
Less common in
Formal & Business
5%
Encyclopedias
1%
Wiki
1%
Ludwig's WRAP-UP
In summary, the phrase "have not changed" is a grammatically correct and commonly used expression in English, as validated by Ludwig AI. It effectively conveys the idea that something has remained constant over time. Analysis of Ludwig's examples reveals that the phrase is most frequently used in news and media, academic, and scientific contexts, with a neutral register suitable for a variety of writing styles. For situations requiring alternatives, phrases like "remained the same" or "stayed constant" offer similar meanings. To ensure clarity, it's best to use "have not changed" when you clearly define what you are referring to and in cases where the subject was intended to change.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
remained the same
Emphasizes the state of being identical over time, highlighting a lack of alteration.
stayed constant
Indicates a fixed and unchanging condition, stressing stability.
not been altered
Highlights the absence of modification or adjustment to something.
persisted unchanged
Suggests a continuation without any modifications or variations.
have not evolved
Specifically refers to a lack of development or progress.
have not shifted
Indicates that there has been no movement or change in position or opinion.
have not varied
Implies a lack of fluctuation or inconsistency.
continued as before
Stresses the uninterrupted nature of something's state.
held steady
Suggests maintaining a stable and consistent state.
were not modified
Focuses on the absence of any alterations or adjustments.
FAQs
How can I use "have not changed" in a sentence?
You can use "have not changed" to indicate that something has remained the same over a period of time. For example, "My opinions "have not changed" since our last discussion."
What's a more formal alternative to "have not changed"?
For a more formal tone, consider using phrases like "remained constant" or "persisted unchanged".
What does it mean when someone says things "have not changed"?
It implies that despite the passage of time or intervening circumstances, the fundamental nature, condition, or status of something remains the same.
Is it correct to say "has not changed" instead of "have not changed"?
Yes, "has not changed" is correct when referring to a singular subject, while "have not changed" is used for plural subjects or with the pronoun "I", "you", "we", or "they".
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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
4.6/5
Expert rating
Real-world application tested