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 quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

MitStanfordHarvardAustralian Nationa UniversityNanyangOxford

must have moved

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "must have moved" is correct and usable in written English.
You could use it when referring to a situation in which something has been relocated, and you are attempting to explain the action. For example, you can say: "The keys to the car were not where I left them, so they must have moved."

✓ Grammatically correct

News & Media

Science

Encyclopedias

Human-verified examples from authoritative sources

Exact Expressions

37 human-written examples

The bird must have moved".

News & Media

The New Yorker

His mother must have moved him.

News & Media

The New Yorker

This time, it must have moved to France.

News & Media

Independent

They must have moved to and from their victims' house.

News & Media

The Guardian

And Jewish-Daddy Lustgarten must have moved on.

News & Media

The New Yorker

Matt must have moved them to mow and stacked them somewhere.

News & Media

The New Yorker
Show more...

Human-verified similar examples from authoritative sources

Similar Expressions

21 human-written examples

"You wouldn't say that every single event must have moving imagery in it," Ms. Jones said.

"We must've moved all of my friends in and out of this apartment, and in and out of fifth-floor walkups".

News & Media

The New York Times

Homeowners will also get a one-year extension before they must prove that they have moved back into their homes.

News & Media

The New York Times

The conditions are: the capturing pawn must be on its fifth rank; the captured pawn must be on an adjacent file and must have just moved two squares in a single move (i.e. a double-step move); the capture can only be made on the move immediately after the opposing pawn makes the double-step move; otherwise the right to capture it en passant is lost.

I was trying to get my luggage when they must have all moved forward.

News & Media

The New York Times
Show more...

Expert writing Tips

Best practice

When using "must have moved", ensure that the context clearly indicates that you are making an inference based on available evidence, rather than stating a known fact.

Common error

Avoid using "must have moved" when you have direct knowledge of the movement. This phrase implies a deduction based on observation, not a direct confirmation. If you know something was moved, state it directly instead of using this modal verb construction.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

87%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "must have moved" functions as a modal perfect construction, expressing a high degree of certainty about a past action. Ludwig confirms its correct usage, highlighting its role in making inferences based on available evidence.

Expression frequency: Uncommon

Frequent in

News & Media

40%

Science

30%

Encyclopedias

10%

Less common in

Formal & Business

5%

Wiki

5%

Reference

5%

Ludwig's WRAP-UP

In summary, "must have moved" is a grammatically sound phrase used to infer a past relocation with a high degree of certainty. Ludwig AI affirms its correctness and provides numerous examples from reputable sources across diverse fields, including News & Media, Science, and Encyclopedias. While not extremely common, it is a versatile phrase suitable for both neutral and professional contexts, allowing speakers to express a logical deduction based on available evidence. Avoid using it as a direct statement of fact; instead, leverage its power to draw conclusions based on observation.

FAQs

How can I use "must have moved" in a sentence?

Use "must have moved" to indicate a logical conclusion based on the available evidence. For instance, "The book isn't on the table; it "must have moved"."

What's a more formal way to say "must have moved"?

For a more formal tone, you might say "it appears to have been relocated" or "it seems it was moved". These alternatives offer a similar meaning with increased formality.

Is "must of moved" ever correct instead of "must have moved"?

"Must of moved" is grammatically incorrect. The correct phrase is ""must have moved"", where "have" is part of the modal perfect construction.

What does "must have moved" imply about the speaker's certainty?

"Must have moved" indicates a high degree of certainty based on circumstantial evidence, but it's not a statement of absolute fact. It suggests a logical inference rather than direct knowledge.

ChatGPT power + Grammarly precisionChatGPT power + Grammarly precision
ChatGPT + Grammarly

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.

Source & Trust

87%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: