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
must be built
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "must be built" is correct and usable in written English.
You can use this phrase when someone is required to create, construct, or assemble something. For example: "A sturdy bridge must be built across the river in order to connect the two parts of the city."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(20)
needs to be constructed
should be erected
has to be established
requires construction
must be generated
must be improved
must be substantiated
must be reinforced
must be cultivated
must be articulated
must be implemented
must be manufactured
must be budgeted
must be created
must be established
must be embedded
must be formulated
must be delivered
must be consolidated
must be upheld
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
Administrative machinery must be built from scratch.
News & Media
The Hacienda must be built".
News & Media
The Haçienda must be built".
News & Media
Houses must be built on smaller lots.
News & Media
New generating plants must be built.
News & Media
Sheds must be built, and veterinarians secured.
News & Media
Quality and safety must be built in.
Science & Research
Teams of rivals must be built.
News & Media
Lots of people are saying 'this must be built'".
News & Media
The new California must be built upon sustainability.
News & Media
True, an original movie must be built from scratch.
News & Media
Expert writing Tips
Best practice
When using "must be built", ensure the context clearly indicates the necessity or obligation of the construction. For instance, "New affordable housing must be built to address the growing needs of the community."
Common error
Avoid using "must be built" when a less forceful word like 'should' or 'could' would suffice. Overusing "must" can make your writing sound overly assertive or even dictatorial when a softer recommendation is more appropriate.
Source & Trust
85%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "must be built" functions as a modal passive construction, indicating a strong necessity or obligation for something to be constructed. As Ludwig AI confirms, this phrase is widely used in various contexts, emphasizing the requirement for creation or establishment.
Frequent in
News & Media
47%
Science
36%
Formal & Business
9%
Less common in
Wiki
3%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "must be built" is a common and grammatically correct expression used to convey a strong necessity for construction or creation. Ludwig AI's analysis confirms its frequent appearance in diverse contexts, including news, science, and business. When writing, use "must be built" to emphasize the critical need for something to be constructed, but be mindful of potential overuse and consider alternative phrases like "needs to be constructed" or "should be erected" to fine-tune your intended meaning. As Ludwig's examples demonstrate, clarity and context are key to effective communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
needs to be constructed
Focuses on the necessity of construction but can imply a less strict requirement than "must".
is essential to build
Directly points out the essential nature of the building process.
should be erected
Suggests a recommendation or best practice rather than an absolute necessity.
it's imperative to construct
Conveys a sense of urgency and high importance in the building process.
has to be established
Emphasizes the establishment of something, whether physical or conceptual, with a sense of obligation.
it is vital to erect
Underlines the vital necessity for erection, emphasizing functionality and critical need.
requires construction
Highlights the requirement for building, often implying a more formal or technical context.
necessitates the building of
More formally indicates that something necessitates the building process.
demands to be created
Suggests an urgent need for creation, possibly emphasizing innovation or artistic expression.
the creation is a must
Rephrases the necessity of creation as a requirement.
FAQs
How can I use "must be built" in a sentence?
Use "must be built" to express a requirement or necessity for construction. For example, "A new school "must be built" to accommodate the growing number of students."
What are some alternatives to "must be built"?
Alternatives include phrases like "needs to be constructed", "should be erected", or "has to be established". The best choice depends on the specific nuance you want to convey; for example, "needs to be constructed" implies a less strict requirement than "must".
Which is correct: "must be built" or "needs to be build"?
"Must be built" is the correct phrasing. "Needs to be build" is grammatically incorrect; the correct form is "needs to be built".
What is the difference between "must be built" and "should be built"?
"Must be built" indicates a strong necessity or obligation, while "should be built" suggests a recommendation or advisability. The former implies a non-negotiable requirement, while the latter offers a suggestion.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
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
4.6/5
Expert rating
Real-world application tested