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UK//hiː mʌst hæv//US//hi mʌst hæv//

Meaning of He must have

Indicates strong belief about a past situation based on evidence.

In simple words: Shows someone is sure about something in the past.

He must have in a sentence

  • He must have forgotten his keys at home.
  • She must have seen that movie to know the plot.
  • They must have left early to catch the train.
  • He must have enjoyed the concert, based on his smile.
  • If he didn't call, he must have been busy.

How to use He must have

Used in spoken or written English to express deduction or certainty about past events. It's more common in informal contexts, but acceptable in formal situations too.

Grammar pattern

modal verb + have + past participle

Memory hint

Think of 'must have' as a detective deducing the past.

Related words

Collocations with He must have

  • must have been
  • must have done
  • must have seen
  • must have said

Synonyms for He must have

  • must have been
  • probably was
  • is likely to have
  • should have been

Common mistakes with He must have

  • Confused with 'he must be', which is about the present.
  • Omitting 'have' in the phrase.
  • Using inappropriately in negative contexts without 'not'.

He must have appears in

He must have in other languages

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Frequently asked questions about He must have

What does He must have mean?

Shows someone is sure about something in the past.

What is the definition of He must have?

Indicates strong belief about a past situation based on evidence.

How do you use He must have in a sentence?

He must have forgotten his keys at home.

Can you give another example of He must have?

She must have seen that movie to know the plot.

What are synonyms for He must have?

Common alternatives include must have been, probably was, is likely to have, should have been.

What words go with He must have?

It commonly pairs with must have been, must have done, must have seen, must have said.

What are common mistakes when using He must have?

Confused with 'he must be', which is about the present. Omitting 'have' in the phrase. Using inappropriately in negative contexts without 'not'.

How do you pronounce He must have?

US: //hi mʌst hæv//, UK: //hiː mʌst hæv//. Listen to the audio above to hear native pronunciation.

When should I use He must have?

Used in spoken or written English to express deduction or certainty about past events. It's more common in informal contexts, but acceptable in formal situations too.