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
he was building
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "he was building" is correct and usable in written English.
It can be used to describe an ongoing action in the past, typically in a narrative or descriptive context. Example: "As the sun set, he was building a sandcastle on the beach, lost in his thoughts."
✓ Grammatically correct
News & Media
Academia
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
He was building a ninth.
News & Media
He was building an empire.
News & Media
"He was building coalitions throughout".
News & Media
He was building a memory.
News & Media
And he was building it by himself.
News & Media
He believed that he was building a magnificent collection.
News & Media
He was building connections that would pay off someday.
News & Media
He was building his own vocabulary of Hindi film music.
News & Media
But he was building a heck of a vocabulary.
News & Media
When he was building settlements there was one reality.
News & Media
"It's a commentary," said Crapster, when I asked what he was building.
Academia
Expert writing Tips
Best practice
Use "he was building" to describe an ongoing activity in the past, particularly when detailing a process or development. For example, "He was building a website, learning new coding skills as he went."
Common error
Avoid abruptly ending a sentence using "he was building" without indicating what was being built or the outcome of the building process. Always provide context or completion to the action.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "he was building" functions as a verb phrase indicating a continuous action in the past. As Ludwig AI confirms, it describes an action that was in progress at a specific time or over a period in the past. Examples in Ludwig showcase its use in various contexts, from constructing physical structures to developing abstract concepts.
Frequent in
News & Media
63%
Academia
7%
Science
5%
Less common in
Wiki
2%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "he was building" is a grammatically sound and highly prevalent way to describe an ongoing action in the past. Ludwig AI confirms its correctness and usability. Its versatility is demonstrated by its frequent appearance in diverse sources, particularly news media and academic texts. When using this phrase, ensure the context clearly indicates what was being built and avoid abrupt endings that leave the action incomplete. Consider alternatives like "he was constructing" or "he was creating" for subtle shifts in meaning.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
he was constructing
Emphasizes the act of putting something together methodically.
he was creating
Focuses on the act of bringing something new into existence.
he was developing
Highlights the gradual growth and evolution of something.
he was establishing
Implies setting up or founding something with a degree of permanence.
he was forming
Suggests the initial stages of creation, shaping something into a particular form.
he was assembling
Focuses on the act of bringing different parts together to make a whole.
he was fabricating
Can imply creating something, sometimes with a connotation of deception or falseness depending on context.
he was erecting
More formal term suggesting the construction of a building or structure.
he was pioneering
Suggests initiating or developing something entirely new.
he was shaping
Highlights the act of giving something a particular form or character.
FAQs
How can I use "he was building" in a sentence?
"He was building" is used to describe an ongoing action in the past. For example: "He was building a treehouse in his backyard." or "He was building his career step by step".
What are some alternatives to "he was building"?
Depending on the context, you can use alternatives like "he was constructing", "he was creating", or "he was developing".
Is it correct to say "he was building" or should I use "he built"?
Both are correct, but they have different meanings. "He was building" indicates an ongoing action in the past, while "he built" indicates a completed action in the past.
What's the difference between "he was building" and "he is building"?
"He was building" refers to a past action, while "he is building" refers to a present action that is currently in progress.
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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