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UK//juː mʌst biː//US//ju mʌst bi//

Meaning of You must be

An expression indicating a necessary or expected state or action.

In simple words: You are required to do something.

You must be in a sentence

  • You must be the new teacher everyone is talking about.
  • If you're feeling sick, you must be careful with what you eat.
  • Based on their behavior, you must be related to them.
  • You must be joking if you think that will work.
  • To succeed, you must be determined and hardworking.
  • You must be excited about the upcoming holiday!

How to use You must be

'You must be' is often used to indicate obligation or certainty. It's suitable for both spoken and written contexts but less common in highly informal settings.

Grammar pattern

you must be + sentence

Memory hint

Think of 'must' as 'must-do' - you have to do it!

Related words

Collocations with You must be

  • you must be aware
  • you must be joking
  • you must be kidding

Synonyms for You must be

Common mistakes with You must be

  • Confuse 'you must be' with 'you can be' when expressing possibility.
  • Use inappropriately with casual slang or very informal speech.
  • Incorrectly place 'not' when expressing obligation.

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Frequently asked questions about You must be

What does You must be mean?

You are required to do something.

What is the definition of You must be?

An expression indicating a necessary or expected state or action.

How do you use You must be in a sentence?

You must be the new teacher everyone is talking about.

Can you give another example of You must be?

If you're feeling sick, you must be careful with what you eat.

What are synonyms for You must be?

Common alternatives include you have to, you need to, it is essential that you.

What words go with You must be?

It commonly pairs with you must be aware, you must be joking, you must be kidding.

What are common mistakes when using You must be?

Confuse 'you must be' with 'you can be' when expressing possibility. Use inappropriately with casual slang or very informal speech. Incorrectly place 'not' when expressing obligation.

How do you pronounce You must be?

US: //ju mʌst bi//, UK: //juː mʌst biː//. Listen to the audio above to hear native pronunciation.

When should I use You must be?

'You must be' is often used to indicate obligation or certainty. It's suitable for both spoken and written contexts but less common in highly informal settings.