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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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must've

Grammar usage guide and real-world examples

USAGE SUMMARY

'must've' is a correct and usable contraction in written English
'Must've' is the contraction of "must have" and is used to indicate that something must have happened or must have been done in the past. Example sentence: I must've left my keys in the car.

✓ Grammatically correct

News & Media

Human-verified examples from authoritative sources

Exact Expressions

59 human-written examples

They must've......

"Must've been".

News & Media

The New Yorker

I must've... dozed off.

"The cheering must've helped.

The wind must've changed.

I must've sounded glum.

He must've been hot.

News & Media

The New York Times

This must've been 1996.

There must've been some.

News & Media

The Guardian

Anyway, I must've forgotten, and my tail must've gone up, and someone must've seen it.

News & Media

The New Yorker

"You must've spent a fortune".

News & Media

The New Yorker
Show more...

Expert writing Tips

Best practice

Use "must've" in informal writing and speech to maintain a conversational tone. In formal contexts, prefer the full form "must have".

Common error

Avoid writing "must of", which is a common misspelling. The correct form is always "must've" (must have).

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

89%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The primary grammatical function of the contraction "must've" is to act as a modal auxiliary verb expressing a strong inference or deduction about a past event. Ludwig provides numerous examples illustrating its use in various contexts.

Expression frequency: Very common

Frequent in

News & Media

75%

Science

10%

Formal & Business

5%

Less common in

Academia

3%

Encyclopedias

2%

Wiki

1%

Ludwig's WRAP-UP

In summary, "must've" is a common contraction of "must have" used to express a strong inference about something in the past. Ludwig AI confirms its grammatical correctness and prevalence, particularly in informal contexts like news and media. While acceptable, it's advisable to use the full form "must have" in formal writing. Remember to avoid the common misspelling "must of". As Ludwig showcases, this contraction is a versatile tool for expressing certainty in everyday language.

FAQs

When is it appropriate to use "must've"?

"Must've" is appropriate in informal writing and spoken English. For formal contexts, it's best to use the full form "must have".

What does "must've" mean?

"Must've" is a contraction of "must have". It indicates a strong belief or deduction about something that has happened in the past. For example, "He must've been tired after the long trip".

What are some alternatives to "must've"?

Alternatives include "must have", "it is likely that", or "it seems that", depending on the desired level of formality.

Is "must of" the same as "must've"?

No, "must of" is an incorrect form. The correct contraction is "must've", which is short for "must have".

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Source & Trust

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Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: