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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
that he did
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that he did" is correct and usable in written English.
It can be used to emphasize or confirm an action that someone has taken, often in response to a question or statement. Example: "Did he really finish the project on time? Yes, that he did."
✓ Grammatically correct
News & Media
Science
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
That, he did.
News & Media
More than that, he did not see.
News & Media
Nole liked that, he did.
News & Media
Instead of that, he did real damage" (Lindee 2008).
Science & Research
"That he did wrong.
News & Media
He said that he did.
News & Media
Diederich responded that he did.
News & Media
Peter said that he did.
News & Media
Brookes insists that he did.
News & Media
(He intimated that he did).
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
Zhangsan said that [he] did not know Lisi.
Science
Expert writing Tips
Best practice
Use "that he did" to provide a subtle emphasis or confirmation, particularly when responding to a question or statement that expresses doubt or surprise.
Common error
Avoid using "that he did" excessively in highly formal writing, as it can sound slightly colloquial. Consider more direct or formal alternatives like "indeed he performed the action" to maintain a professional tone.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that he did" functions as an emphatic affirmation or confirmation. As Ludwig AI confirms, it emphasizes a previously mentioned action, reinforcing its completion or occurrence. Examples show it used both affirmatively and negatively to underscore a point.
Frequent in
News & Media
80%
Science
10%
Formal & Business
10%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "that he did" is a grammatically correct and usable expression primarily employed for emphasis or confirmation. Ludwig AI indicates that it’s often used in response to a question or statement, underscoring the action's occurrence. While it appears most frequently in News & Media contexts, its register is generally neutral, though leaning slightly towards informal. Alternatives such as "indeed he did" or "certainly he did" can offer a more formal tone. To enhance your writing, consider using "that he did" to add subtle emphasis, but avoid overuse in highly formal contexts where a more direct affirmation might be preferable.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
indeed he did
Replaces "that" with "indeed" for a more formal emphasis.
certainly he did
Substitutes "that" with "certainly" to convey assurance.
yes, he did
Adds a direct affirmation before stating the action.
he certainly did
Moves "certainly" to emphasize the person performing the action.
he actually did
Emphasizes the unexpected nature of the action.
and he did
Connects the confirmation to a previous statement.
so he did
Highlights the result or consequence of the action.
as he did
Implies a comparison or manner in which the action was performed.
which he did
Introduces the confirmation as additional information.
it turns out he did
Highlights the revelation that the action occurred.
FAQs
How can I use "that he did" in a sentence?
Use "that he did" to affirm or emphasize a previous statement about someone's action. For instance, "Did he finish the project? That he did."
What are some alternatives to "that he did"?
You can use alternatives like "indeed he did", "certainly he did", or "yes he did" depending on the context.
Is "that he did" formal or informal?
"That he did" is generally considered neutral to slightly informal. It's suitable for everyday conversation and many writing contexts, but might be too casual for highly formal or academic writing.
Can "that he did" be used in negative contexts?
Yes, you can use it in negative contexts to confirm the absence of an action, such as "Did he fail to complete the task? That he did not."
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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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested