Unit 28 - Must and can’t Flashcards Preview

English Grammar in use > Unit 28 - Must and can’t > Flashcards

Flashcards in Unit 28 - Must and can’t Deck (4)
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1
Q

For what can we use « must »?

A
  • to say that you believe something is certain
    example:
    You’ve been travelling all day. You must be tired. (travelling is tiring and you’ve been travelling all day, so you must be tired.
2
Q

When and for what do we use « can’t »

A
  • We use can to say that you believe something is not possible
    example:
    • You’ve just had lunch. You can’t be hungry already. (People are not normally hungry just after eating a meal. You’ve just eaten, so you can’t be hungry.)
3
Q

How do we use « must » and « can’t » in the past?

A
  • For the past we use
    • Must have (done)
    • Can’t have (done)
      Example:
  • There’s nobody at home. They must have gone out.
  • We used to live very near the motorway.
    Did you? it must have been noisy.
4
Q

What can we use instead of can’t have?

A
  • Couldn’t have
    Example:
  • Sarah couldn’t have got my message

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