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don't need to or mustn't

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  • You don't need to eat the cake.  → Can I eat it?
    NO
    YES
  • You don't need to open the door.
    → Keep it closed.
    → It's already open / someone else will do it.
  • Your friend is shouting. What do you say?
  • You don't need to go.
    → You can stay if you want.
    → Stay here. Don't leave.
  • Make a rule: Library → You mustn't _______. → You don't need to _______.
  • Explain the difference: You don't need to open the window. vs You mustn't open the window.
  • You mustn't go.
    → Can I go? No!
    → Can I go? Yes, if you want.
  • You mustn't eat the cake. → Can I eat it?
    NO
    YES
  • You mustn't wear a jacket.
    → Can I wear jacket? Yes. Can I wear something else? Yes.
    → Can I wear jacket? No!
  • Your friend wants to wear three jackets in summer. What do you say?
  • You mustn't do the homework.
    If I choose to do homework it's NOT okay. I can't!
    If I choose to do homework it's okay.
  • You mustn't eat the cake.
    → It's your choice. If you want, you can eat it.
    → Don't eat it!
  • You mustn't stay. → Can I stay?
    YES
    NO
  • The sign says "No Photos".
    B) You mustn't take photos.
    A) You don't need to take photos.
  • You mustn't bring your book. → Can I bring it?
    NO
    YES
  • You don't need to do the homework.
    If I choose not to do homework it's NOT okay. I can't.
    If I choose not to do homework it's okay.
  • You don't need to wear a jacket.
    → Can I wear jacket? Yes. Can I wear something else? Yes.
    → Can I wear jacket? No!
  • Make a rule: Swimming Pool → You mustn't _______. → You don't need to _______.
  • Explain the difference: You don't need to call me. vs You mustn't call me.
  • You don't need to bring your book. → Can I bring it?
    YES
    NO
  • Explain the difference: You don't need to go. vs You mustn't go.
  • You don't need to eat the cake.
    → It's your choice. If you want, you can eat it.
    → Don't eat it!
  • You don't need to stay. → Can I stay?
    NO
    YES
  • You mustn't open the door.
    → Keep it closed.
    → It's already open / someone else will do it.