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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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must be signed

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "must be signed" is correct and usable in written English.
It can be used to indicate that a signature is required for a document or agreement to be valid or official. Example: "To finalize the contract, it must be signed by both parties."

✓ Grammatically correct

News & Media

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Liability waiver must be signed first.

News & Media

The New York Times

The bill must be signed by the president.

News & Media

The New York Times

Peca and Yashin must be signed to contracts.

Petitions must be signed in a very short time.

News & Media

The New York Times

That formula must be signed by all three governors.

News & Media

The New York Times

When that ends, he must be signed for the rest of the season.

When that ends, he must be signed for the rest of the season or released.

News & Media

The New York Times

All submissions must be signed, double-spaced, typed legibly, and encrypted in Linear B cuneiform.

News & Media

The New Yorker

Both bills must be signed by Gov. Jack Dalrymple, a Republican, to become law.

News & Media

The New York Times

Each time the waste changes hands, a copy of the manifest must be signed.

The lease must be signed no later than Dec. 31, 2004.

News & Media

The New York Times
Show more...

Expert writing Tips

Best practice

When indicating a legal or formal requirement, use "must be signed" to clearly convey the necessity of a signature for validity.

Common error

Avoid using "should be signed" when "must be signed" is more appropriate. "Should" suggests a recommendation, while "must" indicates a requirement.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

82%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "must be signed" functions as a passive construction indicating a requirement. Ludwig provides numerous examples across various domains where this phrase is used to convey that a signature is mandatory for a document or agreement to be valid or complete.

Expression frequency: Very common

Frequent in

News & Media

32%

Science

28%

Wiki

18%

Less common in

Formal & Business

12%

Encyclopedias

5%

Reference

5%

Ludwig's WRAP-UP

The phrase "must be signed" is a common and grammatically sound way to express the requirement for a signature. Ludwig AI confirms its correctness and provides numerous examples across diverse contexts such as news, science, and general writing. The phrase typically functions to indicate necessity and obligation, and is found in both neutral and formal registers. While alternatives like "needs to be signed" or "has to be signed" exist, "must be signed" is a clear and direct way to convey the mandatory nature of a signature for a document or process to be valid.

FAQs

How do I use "must be signed" in a sentence?

Use "must be signed" to indicate that a signature is required for a document or agreement to be considered valid or complete. For example, "The contract "must be signed" by both parties before it becomes legally binding."

What can I say instead of "must be signed"?

You can use alternatives such as "needs to be signed", "has to be signed", or "is required to be signed" depending on the level of formality you want to convey. Each alternative offers a slightly different nuance while maintaining the core meaning that a signature is necessary.

Is it acceptable to use "should be signed" instead of "must be signed"?

While "should be signed" is grammatically correct, it implies a recommendation rather than a strict requirement. If a signature is mandatory, ""must be signed"" is the more appropriate and accurate choice.

What is the difference between "must be signed" and "is to be signed"?

"Must be signed" indicates a current requirement, whereas "is to be signed" suggests a future action. "The document "must be signed" today" implies immediate action, while "the document is to be signed tomorrow" schedules the signing for a later time.

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Source & Trust

82%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: