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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
while they carried out
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "while they carried out" is correct and usable in written English.
It can be used to indicate that something is happening simultaneously with the action of carrying out a task or activity. Example: "The team worked on the project while they carried out their regular duties."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(4)
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
13 human-written examples
Sergeant Bales would probably have provided security for the Green Berets while they carried out night raids, built relations with village leaders and organized local militias.
News & Media
Surely the International Association of Athletics Federations could have kept their anxiety about her gender confidential while they carried out whatever tests they believe are required.
News & Media
The researchers began by scanning the brains of 31 men, aged between 19 and 32, while they carried out a task in which they were asked to select one of two symbols on a computer screen.
News & Media
Officials in Fuquan city, Guizhou province, ordered schools closed while they carried out safety tests.
News & Media
Henao was voluntarily withdrawn by Team Sky in 2014 while they carried out research into the biological characteristics of riders who live and train at high altitude.
News & Media
Subjects' brains were scanned while they carried out mundane tasks involving pushing flashing buttons and the following was found by researchers, Unexpectedly, before volunteers made errors, their brains started displaying abnormal behavior … up to a half-minute beforehand.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
47 human-written examples
So is it a case of them being conscious while they carry out the act, but unable to stop their bodies from doing it?
News & Media
As AmI proposes the development of context-aware systems that integrate different devices to recognize the context and act accordingly, these systems can react promptly to the needs of people with ABI while they carry out their rehabilitation process.
Science
SHANGHAI — Chinese authorities have barred a British finance executive at the pharmaceutical giant GlaxoSmithKline from leaving the country while they carry out an investigation into bribery and corruption at the British company, the company confirmed on Wednesday.
News & Media
None of the 20 global banks were fined, but the financial institutions must hold a combined $9.7 billion in extra reserves with Monetary Authority of Singapore at zero percent interest for one year while they carry out internal changes.
News & Media
My best friend, who is a pigeon, tells me that this tracking device has allowed the sinister cabal of my mother, my fiancée, my orthodontist, and the fiendish lawyer John Rothstein to avoid me while they carry out their orgy of sin.
News & Media
Expert writing Tips
Best practice
Use "while they carried out" to clearly indicate that two actions are happening at the same time. It's suitable for describing processes, investigations, or activities performed by a group.
Common error
Avoid using "while they carried out" to describe actions that happened sequentially rather than simultaneously. Ensure the context clearly indicates concurrency.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "while they carried out" functions as a conjunction phrase that introduces a clause specifying the temporal context in which an action occurred. Ludwig confirms that is usable in writting.
Frequent in
News & Media
45%
Science
35%
Formal & Business
10%
Less common in
Wiki
5%
Academia
3%
Reference
2%
Ludwig's WRAP-UP
In summary, "while they carried out" is a grammatically correct and usable phrase used to indicate that an action happened concurrently with another. Ludwig confirms this. It is most commonly found in news, scientific, and formal contexts. It is important to avoid tense confusion when using this phrase, ensuring that the context shows two simultaneous actions. Alternatives like "as they performed" or "during their execution of" can be used depending on the desired level of formality. Overall, this phrase serves to clearly establish a temporal relationship between events.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
as they performed
A more direct and simple way to convey simultaneous action.
as they were conducting
Implies a structured or methodical approach to the action.
during their execution of
Emphasizes the formal completion of a task or plan.
as they accomplished
Focuses on the successful completion of the task.
while they were fulfilling
Emphasizes the completion of a duty or obligation.
during the undertaking of
Highlights the commencement and progression of a project or task.
in the course of implementing
Focuses on the active implementation phase of a task.
whilst in the process of executing
A more formal and elaborate way of saying "while they were doing".
concurrent with their execution of
Suggests a more formal and parallel execution of the activity.
simultaneous to their carrying out
Highlights the synchronous nature of the actions.
FAQs
How can I use "while they carried out" in a sentence?
Use "while they carried out" to show that an action or process was ongoing during the performance of a specific activity. For instance, "The researchers scanned the brains of participants "while they carried out" a decision-making task".
What are some alternatives to "while they carried out"?
Alternatives include phrases such as "as they performed", "during their execution of", or "in the course of implementing", depending on the context and level of formality. You could also use: "during the undertaking of".
Is it correct to use "whilst they carried out" instead of "while they carried out"?
"Whilst they carried out" is grammatically correct and means the same as "while they carried out". "Whilst" is more formal and less commonly used in American English.
What's the difference between "while they carried out" and "after they carried out"?
"While they carried out" indicates that two events occurred simultaneously. "After they carried out" indicates that one event happened after the other was completed.
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested