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
which they did
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "which they did" is correct and usable in written English.
You can use it when you need to refer back to something that "they" have done previously in the conversation. For example: "John and Sarah had been discussing what to do for their anniversary, which they did in the end decide to spend it together at the beach."
✓ Grammatically correct
News & Media
Academia
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
60 human-written examples
Which they did in style yesterday.
News & Media
All of which they did.
News & Media
Which they did, after anesthetizing the animals.
News & Media
Which they did, one by one.
News & Media
Which they did, just outside Macy's.
News & Media
Which they did from the start.
News & Media
(Which they did not pay for).
News & Media
They would sign a veteran quarterback, which they did.
News & Media
But the manner in which they did had jaws dropping.
News & Media
They were asked to change the lyrics, which they did.
News & Media
England were the first to erupt, which they did spectacularly.
News & Media
Expert writing Tips
Best practice
Use "which they did" to succinctly refer back to a previously mentioned action, avoiding unnecessary repetition and maintaining clarity in your writing.
Common error
Avoid using "which they did" when the action being referred to is unclear or has not been explicitly stated earlier in the sentence or paragraph, as this can lead to confusion.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "which they did" functions as a relative clause that refers back to a previously mentioned action or event. It provides a concise way to confirm or emphasize that the action was indeed carried out. Ludwig AI shows that this phrase is commonly used in various contexts.
Frequent in
News & Media
50%
Academia
25%
Science
25%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "which they did" is a grammatically correct and frequently used phrase that acts as a relative clause to confirm a previously mentioned action. Ludwig AI confirms its usability across diverse contexts, particularly in news, academic, and scientific writing. It's best practice to use it when the action is clear and unambiguous. For stylistic variation, consider alternatives like "they followed through" or "as they proceeded to do". While versatile, "which they did" maintains a neutral tone suitable for various communication styles.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
they carried it out
Emphasizes the completion of a task or plan.
they followed through
Implies a commitment to completing something that was started.
as they proceeded to do
Emphasizes the sequence of events and the deliberate nature of the action.
they saw it through
Implies perseverance and completion despite potential difficulties.
and they acted accordingly
Highlights the alignment of action with a prior decision or plan.
they went ahead and did it
Suggests a degree of willingness or perhaps overcoming hesitation.
subsequently, they executed it
Focuses on the execution aspect, adding a formal tone.
they undertook the task
Highlights the initiation and involvement in a particular activity.
they performed the action
A more formal and less common way to express the same idea.
they completed the deed
A more dramatic or formal way of saying they finished the action.
FAQs
How can I use "which they did" in a sentence?
Use "which they did" to refer back to an action that has already been mentioned. For example, "The company promised to reduce emissions, "which they did" by investing in renewable energy".
What are some alternatives to using "which they did"?
Alternatives include "as they proceeded to do", "and they acted accordingly", or "they followed through", depending on the specific nuance you want to convey.
Is it ever incorrect to use "which they did"?
It's best to avoid using "which they did" if the action you're referring to is vague or unclear from the context. Make sure the reader can easily understand what "they did".
What's the difference between "which they did" and "what they did"?
"Which they did" refers back to a specific action already mentioned, while "what they did" introduces or describes an action without prior reference. For instance, "They agreed to the terms, "which they did" promptly," versus "I'm unsure of "what they did" to resolve the issue."
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested