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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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it must be

Grammar usage guide and real-world examples

USAGE SUMMARY

'it must be' can be used in written English, typically in a declarative sentence.
An example sentence could be: "The sky was so dark, it must be a storm approaching."

✓ Grammatically correct

News & Media

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

It must be overturned.

It must be considered.

News & Media

The New York Times

It must be eliminated.

News & Media

The New York Times

It must be genetic.

It must be examined.

News & Media

The New Yorker

It must be true.

News & Media

The New York Times

It must be savaged.

News & Media

The New Yorker

"It must be complete.

News & Media

Independent

"It must be.

It must be tempting.

News & Media

The Economist

It must be Mozambique.

News & Media

The Economist
Show more...

Expert writing Tips

Best practice

Use "it must be" to express a strong belief or logical deduction based on available evidence. Ensure the context provides sufficient clues to support the conclusion.

Common error

Avoid using "it must be" when the situation involves mere speculation without reasonable grounds. Opt for phrases like "it might be" or "it could be" to convey uncertainty more accurately.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

85%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "it must be" functions primarily as a modal verb phrase used to express a strong degree of certainty, logical deduction, or a firm conclusion based on available information. Ludwig AI's analysis confirms its common use in drawing inferences.

Expression frequency: Very common

Frequent in

News & Media

40%

Science

30%

Wiki

15%

Less common in

Formal & Business

5%

Reference

5%

Encyclopedias

5%

Ludwig's WRAP-UP

In summary, "it must be" is a versatile modal phrase commonly used to express strong conviction or logical deduction. As shown by Ludwig's examples, it frequently appears in news, scientific, and general contexts, maintaining a relatively neutral register. While grammatically sound and widely accepted, avoid overuse in purely speculative scenarios and consider formal alternatives in academic settings. The phrase provides a clear and assertive way to convey certainty, making it a valuable tool for effective communication.

FAQs

How can I use "it must be" in a sentence?

Use "it must be" to express a logical deduction or a strong belief based on evidence. For example, "The phone is ringing; "it must be" John calling."

What phrases can I use instead of "it must be"?

Alternatives include "it has to be", "it is certainly", or "it is necessarily", depending on the nuance you want to convey.

When is it appropriate to use "it must be" versus "it might be"?

"It must be" suggests a high degree of certainty based on available evidence, while "it might be" indicates a possibility with less supporting evidence. Choose the phrase that best reflects your level of confidence.

Is "it must be" suitable for formal writing?

Yes, "it must be" is appropriate for formal writing, especially when making logical deductions. However, consider using more formal alternatives like "it is required to be" in highly academic or professional contexts.

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Source & Trust

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Authority and reliability

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Expert rating

Real-world application tested

Most frequent sentences: