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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
which he did
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "which he did" is correct and usable in written English.
You can use it when referring to an action that was previously mentioned in the sentence. For example: "The teacher asked John to finish his assignment, which he did without hesitation."
✓ Grammatically correct
News & Media
Academia
Alternative expressions(6)
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
Which he did.
News & Media
Which he did, the very next day.
News & Media
Which he did, for five years.
News & Media
Which he did last Thursday.
News & Media
Which he did not get.
News & Media
Which he did soon after.
News & Media
AW: — Which he did the background vocals on.
Academia
Sound counsel, which he did not adopt.
News & Media
Which he did, and it was good.
News & Media
Which he did, going on to score 65 runs.
News & Media
A judge ordered Mr. Ciolli to pay, which he did.
News & Media
Expert writing Tips
Best practice
Use "which he did" to concisely refer back to a previously mentioned action, avoiding unnecessary repetition.
Common error
While grammatically correct, overuse of "which he did" can make writing sound repetitive or simplistic. Consider using stronger verbs or rephrasing for variety and impact, especially in formal contexts.
Source & Trust
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "which he did" functions as a non-restrictive relative clause, adding extra information about a previously mentioned action. As Ludwig AI points out, it's grammatically correct and usable in written English.
Frequent in
News & Media
77%
Academia
21%
Science
2%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "which he did" is a grammatically sound and commonly used phrase that functions as a non-restrictive relative clause. As Ludwig AI states, the phrase is correct and usable in written English. It serves to confirm or elaborate on a previously mentioned action, primarily within neutral contexts like news and media, but is frequent in academia too. While versatile, it's important to avoid overuse and consider more formal alternatives when appropriate. Based on a thorough analysis of various sources, it is a handy, simple, concise way to indicate an action was performed as expected.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that he did
This alternative replaces "which" with "that", providing a slightly more direct phrasing.
as he did
This alternative uses "as" instead of "which", emphasizing the manner in which the action was performed.
and he did
This alternative breaks the sentence into two, using "and" to connect the action.
he actually did
This alternative adds "actually" for emphasis.
something he did
This alternative is more general, referring to "something" he did.
which was done by him
This alternative uses a passive voice.
he followed through
This alternative uses the phrasal verb "followed through" to indicate completion of the action.
he carried it out
This alternative uses the phrasal verb "carried it out" to mean he performed the action.
this action he took
This alternative rephrases the action with a different sentence structure.
it was performed by him
This alternative uses passive voice and a formal tone.
FAQs
How can I rephrase "which he did" to sound more formal?
Consider alternatives like "that he performed", "as he executed", or "something he undertook depending on the specific context to elevate the formality of your writing.
Is it always necessary to include "which he did" after stating an action?
No, it's often redundant. Only use "which he did" if you want to emphasize the completion of the action or provide additional context. Otherwise, the initial statement may suffice.
Are there situations where "which he did" is inappropriate?
While grammatically correct, it might sound awkward or repetitive in very formal or technical writing. Opt for more concise or sophisticated phrasing depending on the audience.
What's the difference between "which he did" and "that he did"?
"Which he did" and "that he did" are often interchangeable, but "which" introduces a nonrestrictive clause (additional, non-essential information), while "that" introduces a restrictive clause (essential information). In practice, the distinction is often blurred, and either can work.
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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
4.6/5
Expert rating
Real-world application tested