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
it must be established
Grammar usage guide and real-world examplesUSAGE SUMMARY
'it must be established' is a correct and usable phrase in written English.
You can use it when referring to something that needs to be determined or set up. For example: "Before we can begin the project, it must be established what the goals and objectives are."
✓ Grammatically correct
News & Media
Academia
Science
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
23 human-written examples
It must be established by statute to secure its independence and its public purpose must be defined with great clarity to ward off subsidy seekers.
News & Media
As a prerequisite for work at CHESS it must be established whether or not Hazardous Materials are involved.
Academia
Our team has struggled mightily with that position for decades and it must be established in this season, whoever stands under center.
News & Media
First, the cause of the coma must be ascertained, and it must be established that the patient (who will always have been in apneic coma and on a ventilator for several hours) is suffering from irremediable, structural brain damage.
Encyclopedias
For the regulation to truly be "no more extensive than necessary," it must be established that a more efficient energy source will serve only as a means for saving energy, rather than as an inducement to consume more energy because the cost has decreased or because other energy using products will be used in conjunction with the more efficient one.
Academia
Before a federal court may overturn a conviction resulting from a state trial in which this instruction was used, it must be established not merely that the instruction is undesirable, erroneous, or even 'universally condemned,' but that it violated some right which was guaranteed to the defendant by the Fourteenth Amendment.
Academia
Human-verified similar examples from authoritative sources
Similar Expressions
37 human-written examples
1868, 1871, 40 L.Ed.2d 431974974) (" 'It must be established not merely that the instruction is undesirable, erroneous, or even "universally condemned," but that it violated some constitutional right' ").
Academia
In a time when health care resources are limited and health priorities must be established, it is crucial to project the short-term mortality after AIDS for future planning of health care resources [ 1].
Science
In order to be certain that a biosimilar achieves its potential in ordinary clinical use, an intensive post-licensing monitoring system must be established since it is the sole means to ascertain the true similarity between the original biologic and its biosimilar.
Science
In order to be certain that a biosimilar reaches its potential in ordinary clinical use, an intensive post-licensing monitoring system must be established since it is the only means to ascertain the true similarity between the original biologic and its biosimilar.
Science
As a prerequisite to communication, an efficient route between network nodes must be established, and it must adapt to the rapidly changing topology of vehicles in motion.
Expert writing Tips
Best practice
When using "it must be established", ensure that the context clearly indicates what needs to be proven or confirmed. This phrase introduces a requirement for verification or substantiation.
Common error
Avoid using "it must be established" in situations where the need for verification is already implied. Instead, opt for more concise phrasing to maintain clarity and impact.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "it must be established" functions as a modal verb phrase expressing necessity and obligation. It introduces a condition that needs to be satisfied through evidence or proof before further action can be taken. As shown in Ludwig, this phrase is used across different contexts.
Frequent in
Science
36%
News & Media
32%
Academia
20%
Less common in
Formal & Business
4%
Encyclopedias
4%
Social Media
0%
Ludwig's WRAP-UP
In summary, "it must be established" is a modal verb phrase used to express the necessity of verifying or proving a condition before proceeding. As noted by Ludwig, the phrase is grammatically correct and suitable for use in written English. It frequently appears in scientific, news, and academic contexts, as the necessity of the statement can be applied to a wide variety of contexts. To enhance clarity, avoid using the phrase in redundant contexts and ensure the subject requiring verification is clear. Related phrases include "it needs to be proven" and "confirmation is required". It is useful across various registers but leans towards a neutral tone.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
it must be verified
Highlights the need to verify something.
it needs to be proven
Focuses on the necessity of providing evidence or verification.
it has to be verified
Emphasizes the need for confirmation of accuracy.
it should be confirmed
Suggests a recommendation to corroborate information.
it is essential to ascertain
Highlights the importance of finding something out for certain.
it is imperative to determine
Stresses the urgency of making a firm decision or finding something out.
it is necessary to validate
Underlines the need to check or prove the validity of something.
confirmation is required
Highlights that a confirmation is needed.
verification is needed
Focuses on the necessity of checking accuracy.
proof is necessary
Emphasizes the need for evidence.
FAQs
How to use "it must be established" in a sentence?
Use "it must be established" to indicate that something requires proof or verification before further action can be taken. For example, "Before implementing the new policy, "it must be established" that there is sufficient demand".
What can I say instead of "it must be established"?
You can use alternatives like "it needs to be proven", "it should be confirmed", or "confirmation is required" depending on the context.
When is it appropriate to use "it must be established"?
It is appropriate to use "it must be established" when highlighting the necessity of verifying a fact, claim, or condition before proceeding. It emphasizes the importance of evidence or confirmation.
What's the difference between "it must be established" and "it must be determined"?
"It must be established" implies a need for proof or verification, while "it must be determined" suggests a need for a decision or conclusion to be reached. While similar, "it must be determined" focuses more on resolving uncertainty than providing evidence.
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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
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested