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
had been developing
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "had been developing" is correct and usable in written English.
It is typically used to indicate an ongoing action or process that started in the past and continued up to a certain point in time. Example: "The software had been developing for several months before the final release was announced."
✓ Grammatically correct
News & Media
Academia
Science
Encyclopedias
Wiki
Alternative expressions(20)
had been progressing
had been advancing
had been growing
had been implementing
had been providing
had been designing
had been preparing
had been designed
had been prepared
had been doing
had been broadening
had been widening
had been increasing
had been works
had been done
had been completed
had been constructing
had been built
had been escalating
had been drafting
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
53 human-written examples
"It had been developing for years.
News & Media
The Libyan ISIS affiliate had been developing for some time.
News & Media
In fact, it had been developing for months.
News & Media
In 1990, England had been developing a revolutionary style.
News & Media
These issues had been developing years before 9/11.
News & Media
The companies had been developing a transfer station in the Pinelands National Reserve.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
7 human-written examples
The easy ones had been developed.
News & Media
Telecommunications have been developing slowly in Cambodia.
Encyclopedias
Those attractions have been developing.
News & Media
The trend has been developing for decades.
News & Media
Google has been developing them since 2009.
News & Media
Expert writing Tips
Best practice
When writing about scientific or technological advancements, "had been developing" effectively conveys the iterative nature of research and experimentation that spans over an extended period.
Common error
Avoid using "had been developing" when referring to a development that has already fully concluded and its impact is the focus. In such cases, consider using the past perfect tense ('had developed') to indicate completion before a specific point in time. For example: 'The company had developed a new technology by 2020, which revolutionized the industry' instead of 'The company had been developing a new technology by 2020'.
Source & Trust
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "had been developing" functions as a past perfect continuous verb phrase, indicating an action that was in progress over a period of time leading up to a specific point in the past. This is supported by Ludwig AI, which confirms its correct usage in various contexts.
Frequent in
News & Media
38%
Wiki
20%
Academia
12%
Less common in
Science
10%
Encyclopedias
9%
Formal & Business
5%
Ludwig's WRAP-UP
In summary, the phrase "had been developing" is a versatile verb phrase used to describe ongoing processes in the past, frequently found in news, academic, and wiki contexts. Ludwig AI confirms its grammatical correctness and wide applicability. When using "had been developing", ensure it accurately reflects an action in progress over time and avoid confusion with the past perfect tense for completed actions. Consider alternatives such as "had been evolving" or "had been progressing" to fine-tune the nuance. Remember to keep the time frame and context in mind to create an effective description.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
had been evolving
Focuses more on natural, gradual change or unfolding.
had been progressing
Highlights steady advancement towards a goal.
had been advancing
Emphasizes forward movement and improvement.
had been growing
Suggests an increase in size, number, or strength.
had been maturing
Implies a process of becoming more complete, perfect, or ready.
had been unfolding
Suggests a gradual revelation or becoming known.
had been cultivating
Focuses on carefully nurturing or fostering something.
had been fostering
Highlights promoting the growth or development of something.
had been shaping
Implies actively forming or molding something.
had been building
Focuses on constructing or creating something gradually.
FAQs
How can I use "had been developing" in a sentence?
Use "had been developing" to describe an ongoing process that started in the past and continued until a specific point, like "The team "had been developing" the software for six months before its release".
What are some alternatives to "had been developing"?
You can use phrases like "had been evolving", "had been progressing", or "had been advancing" depending on the specific nuance you want to convey.
When should I use "had developed" instead of "had been developing"?
Use "had developed" when the development is complete and you're focusing on the result or the state after the development. Use "had been developing" when you want to emphasize the ongoing nature of the development process up to a certain point.
Is "had been developing" formal or informal?
"Had been developing" is appropriate for both formal and informal contexts. Its suitability depends more on the surrounding vocabulary and the overall tone of the writing.
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
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested