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
what they do
Grammar usage guide and real-world examplesUSAGE SUMMARY
'what they do' is a perfectly correct and usable phrase in written English.
You can use it as an introductory phrase to a sentence, such as: "What they do goes far beyond following the rules."
✓ Grammatically correct
News & Media
Academia
Science
Wiki
Alternative expressions(3)
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
58 human-written examples
It's what they do.
News & Media
Not what they do.
News & Media
That's what they do.
News & Media
So that's what they do.
News & Media
They love what they do.
News & Media
That's just what they do".
News & Media
People control what they do.
News & Media
"What they do is lighter.
News & Media
This is what they do.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
2 human-written examples
They did what they did".
News & Media
Tells what they did.
News & Media
Expert writing Tips
Best practice
Use "what they do" to clearly and concisely describe the typical actions or behaviors of a group or entity.
Common error
Avoid using "what they do" when referring to a single, specific action. Instead, use it to describe general practices or habitual behaviors.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "what they do" functions as a noun phrase, often acting as the subject or object of a sentence. As Ludwig AI indicates, it introduces a description of actions or typical behaviors. Examples from Ludwig show it defining roles, responsibilities, or characteristic activities.
Frequent in
News & Media
50%
Academia
20%
Science
15%
Less common in
Wiki
10%
Formal & Business
5%
Reference
0%
Ludwig's WRAP-UP
In summary, "what they do" is a versatile phrase functioning as a noun phrase to describe the typical actions or responsibilities of a group. As Ludwig AI confirms, it's grammatically correct and widely used. The phrase exhibits a neutral register, making it appropriate for various contexts from news reporting to academic discourse. Common contexts include News & Media, Academia and Science. When writing, remember that "what they do" refers to general practices, not single actions, and alternatives like "their actions" or "their responsibilities" can provide nuanced variations. The provided examples and analyses offer a clear understanding of its usage, ensuring effective communication.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
their actions
Focuses on specific actions taken.
their activities
Emphasizes a range of pursuits or engagements.
their responsibilities
Highlights obligations and duties.
their habits
Refers to recurring behaviors.
their routine
Focuses on a regular course of procedure.
their job
Emphasizes the tasks related to one's occupation.
their function
Highlights the purpose or role they fulfill.
what is their role
Queries about their part in something.
how they operate
Focuses on their method of functioning.
their modus operandi
Highlights a particular way or method of doing something.
FAQs
How can I use "what they do" in a sentence?
You can use "what they do" to describe the typical actions or responsibilities of a group. For instance, "What they do is crucial for the success of the project".
What are some alternatives to "what they do"?
Depending on the context, you could use phrases like "their actions", "their responsibilities", or "their routine" to convey a similar meaning.
Is "what they do" formal or informal?
"What they do" is generally considered neutral and can be used in both formal and informal contexts.
How does "what they do" differ from "what they are doing"?
"What they do" refers to habitual actions or typical behaviors, while "what they are doing" refers to actions happening at a specific moment.
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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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested