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Think 4 Unit 5 Grammar

  •  English    23     Public
    Obligation, permission and prohibition
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  • Daniel didn't do his homework last night. He'd already done it the night before.
    He didn't need to do his homework.
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  • Sally didn't revise for her History exam. She passed it easily anyway.
    She didn't need to study.
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  • I took a thick jumper with me yesterday but it was a hot and sunny day.
    I needn't have brought a jumper.
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  • Lucy baked Brian a birthday cake but his mum had already bought him one from the shop.
    Lucy needn't have baked Brian a cake.
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  • Liam didn't have dinner at home because he knew there was food at the party.
    He didn't need to eat dinner.
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  • We took a taxi from the station but the hotel was only 200 meters away so we could have walked.
    We needn't have taken a taxi.
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  • I'd already sent Lara a text and that's why I didn't call her.
    I didn't need to call her.
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