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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
must be done
Grammar usage guide and real-world examplesUSAGE SUMMARY
"must be done" is correct and usable in written English.
You can use it when you want to express obligation or necessity. Example: All of the dishes need to be washed and put away; it must be done before bedtime.
✓ Grammatically correct
News & Media
Science
Formal & Business
Wiki
Alternative expressions(20)
needs to be completed
is required
has to be executed
needs to be done
is essential
is a must
is imperative
is obligatory
should be performed
is unavoidable
will be assembled
will be interrogated
is deserved
is predicated
needs refinement
deserves to be done
will be reinvigorated
is required to be done
ought to be done
is needed
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
Something must be done.
News & Media
Justice must be done".
News & Media
It must be done.
News & Media
Therefore Y must be done.
News & Media
And something must be done?
News & Media
This must be done today".
News & Media
Something must be done soon.
News & Media
Still, something must be done.
News & Media
It must be done eventually.
News & Media
But it must be done.
News & Media
Homework must be done.
News & Media
Expert writing Tips
Best practice
Consider the tone when using "must be done"; it can sound authoritative. In more collaborative contexts, consider softer alternatives like "needs to be done" or "is required".
Common error
Avoid using "must be done" in overly casual or informal situations where a more relaxed tone is appropriate. Phrases like "needs to be done" or "should be done" might be more suitable.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "must be done" functions primarily as a modal auxiliary phrase indicating obligation or necessity. It signifies that a certain action or task is required or essential. As Ludwig AI confirms, it's suitable for expressing duty or compulsion.
Frequent in
News & Media
43%
Science
23%
Formal & Business
12%
Less common in
Wiki
12%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "must be done" is a versatile construction used to express obligation or necessity across a variety of contexts. As confirmed by Ludwig AI, it is grammatically correct and widely applicable. While commonly found in news, scientific, and formal business settings, care should be taken to adjust the tone for informal situations. Alternatives such as "needs to be completed" or "is required" can offer softer alternatives. With its frequent use and clear purpose, understanding the nuances of "must be done" will enhance your writing and communication skills.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
is required
Highlights a requirement or mandate.
is essential
Indicates the critical importance of something.
needs to be completed
Emphasizes the necessity of finishing a task.
is a must
Indicates something indispensable or highly recommended.
is imperative
Stresses the urgency and necessity of an action.
has to be executed
Focuses on the performance and completion of an action.
is obligatory
Highlights a mandatory action.
should be performed
Suggests a recommended or expected action.
demands completion
Focuses on the requirement to finalize something.
is unavoidable
Highlights something that cannot be prevented or evaded.
FAQs
How can I use "must be done" in a sentence?
Use "must be done" to express that something is obligatory or necessary. For instance, "The report must be done by Friday."
What are some alternatives to "must be done"?
Alternatives include "needs to be completed", "is required", or "has to be executed", depending on the context.
Is it better to say "must be done" or "needs to be done"?
"Must be done" conveys a stronger sense of obligation, while "needs to be done" is often perceived as slightly softer and more collaborative.
When is it inappropriate to use "must be done"?
Avoid using "must be done" in very informal settings or when a less authoritative tone is desired. Using alternatives can help maintain a more relaxed atmosphere.
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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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested