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 proved that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The part of the sentence "He proved that" is correct and usable in written English.
You can use it when you want to introduce the fact that a person has demonstrated or verified something. For example, "He proved that the universe is billions of years old."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Wiki
Alternative expressions(20)
he demonstrated that
he established that
he received that
he reported that
he asserted that
he revealed that
he testified that
he acknowledged that
he moved that
he observed that
he explained that
he validated that
he prescribed that
he confirmed that
he reasoned that
he ended that
he believed that
he compared that
he arranged that
he replied that
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
59 human-written examples
I think he proved that".
News & Media
"He proved that again.
News & Media
He proved that wrong in dramatic fashion.
News & Media
"And he proved that tonight".
News & Media
He is a great front-runner, and he proved that".
News & Media
"We always thought he was our goalkeeper and he proved that".
News & Media
He proved that".
News & Media
Then, he proved that converges strongly to.
He proved that converges strongly to some fixed points of.
(3) He proved that problem (3) blows up at finite time (T^) when (0 < gamma < 1).
Science
He proved that he belonged".
News & Media
Expert writing Tips
Best practice
Use "he proved that" to introduce a statement or finding that has been clearly demonstrated or verified through evidence or reasoning. Ensure the statement that follows is a direct consequence of the proof.
Common error
Avoid using "he proved that" to introduce a claim without providing adequate supporting evidence. Ensure the context clearly demonstrates the proof or verification of the statement.
Source & Trust
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "he proved that" serves as a transitive reporting verb introducing a subordinate clause that functions as the direct object. It asserts that a male individual has successfully demonstrated the truth or validity of something. Ludwig AI indicates that this phrase is correct and usable in written English.
Frequent in
News & Media
39%
Science
31%
Encyclopedias
9%
Less common in
Wiki
5%
Formal & Business
2%
Social Media
0%
Ludwig's WRAP-UP
In summary, "he proved that" is a grammatically sound and frequently employed phrase used to assert the successful demonstration or verification of a claim by a male individual. As Ludwig AI confirms, it is suitable for written English, spanning various contexts from news reporting to scientific discourse. While highly versatile, ensure adequate supporting evidence accompanies its use to avoid misrepresentation. Based on Ludwig's analysis, the phrase is most commonly encountered in News & Media and Scientific sources, indicating its relevance across diverse domains.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
He demonstrated that
Emphasizes the act of showing or illustrating something, often through a practical example.
He showed that
A more general term indicating that something was made evident or clear.
He established that
Focuses on the act of firmly setting or proving something to be true or factual.
He confirmed that
Highlights the act of verifying or corroborating something previously suspected or proposed.
He validated that
Stresses the act of proving something to be officially or legally sound or acceptable.
He substantiated that
Implies providing evidence to support the truth of something.
He evidenced that
Focuses on providing tangible proof or indication of something.
His findings indicated that
Shifts the focus to the results or outcomes of an investigation or study.
He made it clear that
Indicates that the statement or demonstration he gave was easy to perceive or understand.
The evidence suggests that he
Highlights that something is most likely, though not fully demonstrated to be true.
FAQs
How can I use "he proved that" in a sentence?
Use "he proved that" to introduce a fact or conclusion that has been successfully demonstrated through evidence or reasoning. For example, "He proved that the theorem holds true under specific conditions".
What are some alternatives to "he proved that"?
You can use alternatives like "he demonstrated that", "he established that", or "he confirmed that depending" on the context.
Is it grammatically correct to say "he proved that"?
Yes, "he proved that" is grammatically correct. It's a standard way to introduce a statement that someone has shown to be true.
What's the difference between "he proved that" and "he suggested that"?
"He proved that" indicates a demonstrated fact, while "he suggested that" implies a proposal or idea that may not be fully supported by evidence. "He proved that" conveys a higher degree of certainty than "he suggested that".
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