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Modals of obligation

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  • We use "must" or "have to" to show...
    obligation
  • You ____________________ brush your teeth three times a day.
    should
  • You ____________________ tell jokes in a serious situation.
    shoudn't
  • Make a question using "have to": You / take off your shoes / at home?
    Do you have to take off your shoes at home?
  • We use "should" or "shouldn't" to give...
    advice
  • We use "mustn't" to show...
    prohibition
  • Make a question using "have to": I / be here / tomorrow?
    Do I have to be here tomorrow?
  • Peter ________________ clean his room every weekend. If not, he can't meet his friends.
    has to
  • You __________________ eat in the library.
    musn't
  • You _______________ go to sleep too late if you want to feel good next day.
    shouldn't
  • You ______________ steal.
    mustn't
  • We use "don't have to" to show there is...
    no obligation
  • Make a question using "have to": Mike / clean his room / today?
    Does Mike have to clean his room today?
  • Make a question using "should": I / study in the library?
    Should I study in the library?
  • Students _______________ be at school at 9 o'clock.
    Must
  • You ________________ come to school at the weekends.
    don't have to
  • People _____________________ be nice to each other.
    should
  • You ________________ spend too much money, if you want to save.
    shouldn't
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