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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 work
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "must work" is correct and usable in written English.
You can use it when you want to express something is necessary or must be done. For example: "If we want to reach our goals, we must work hard."
✓ Grammatically correct
News & Media
Encyclopedias
Academia
Science
Wiki
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
60 human-written examples
"A recipe must work?
News & Media
We must work together".
News & Media
I must work".
News & Media
The audience must work harder.
Encyclopedias
The jokes must work tonight".
News & Media
The phones must work".
News & Media
The system must work.
News & Media
But I must work.
News & Media
Here everyone must work.
News & Media
Schools must work together.
News & Media
Federal employees must work.
News & Media
Expert writing Tips
Best practice
When using "must work", ensure the context clearly indicates a strong obligation or necessity. Consider the audience and situation to determine if a softer modal verb like "should" or "need to" might be more appropriate.
Common error
Avoid using "must work" in casual conversations or informal writing where it can sound overly assertive or demanding. Opt for phrases like "need to work" or "have to work" to maintain a more relaxed tone.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "must work" primarily functions as a modal verb phrase indicating a strong obligation, necessity, or requirement to perform an action. Ludwig AI confirms its correct usage. The examples provided by Ludwig illustrate its deployment across diverse scenarios, from personal resolutions to systemic imperatives.
Frequent in
News & Media
53%
Academia
12%
Wiki
10%
Less common in
Science
8%
Encyclopedias
6%
Formal & Business
3%
Ludwig's WRAP-UP
In summary, the phrase "must work" is a common and grammatically sound expression used to convey a strong sense of obligation or necessity. Ludwig AI indicates that the phrase is correct and usable in written English. It appears frequently in News & Media sources and academic settings. While interchangeable with alternatives like "have to work" or "need to work", "must work" carries a slightly stronger tone. When using this phrase, be mindful of the context and audience to ensure the level of formality aligns with your intended message. Overusing "must" in informal settings can sound overly assertive, so consider using softer alternatives. By understanding the nuances of "must work", you can effectively communicate the importance of effort and commitment in your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
have to work
Uses "have to" instead of "must" to convey obligation.
need to work
Employs "need to" indicating a requirement or necessity for working.
are required to work
Expresses obligation through a passive construction, emphasizing the requirement.
it is essential to work
Highlights the essential nature of working, adding emphasis.
it's imperative to work
Replaces "must" with "imperative", suggesting a high level of necessity.
it is necessary to work
Uses "necessary" to show the need to perform a task.
it is obligatory to work
Substitutes "must" with "obligatory", denoting a binding requirement.
are obligated to work
Expresses the requirement through a passive form of obligation.
should work
Replaces "must" with "should", softening the obligation to a recommendation.
ought to work
Uses "ought to" to suggest a moral obligation or advisability.
FAQs
How to use "must work" in a sentence?
Use "must work" to indicate a strong obligation or necessity. For example, "If we want to succeed, we "must work" together".
What can I say instead of "must work"?
You can use alternatives like "have to work", "need to work", or "are required to work" depending on the context.
Which is correct, "must work" or "should work"?
"Must work" implies a stronger obligation than "should work". Use "must" when the action is essential, and "should" when it's a recommendation.
What's the difference between "must work" and "have to work"?
While similar, "have to work" often indicates an external obligation, whereas "must work" can imply either an internal or external obligation. In many contexts, they are interchangeable.
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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