新目標Unit 5 It must belong to Carla 教學設計
this must be your room. there must be a mistake. 在回答由must引起的問題時,如果是否定的答復,不能用mustn't,而需要用needn't或don't have to,因為mustn't是”一定不要”的意思。 例如: —must we hand in our exercises today? —no,you needn't. must not的否定形式則表示”不應該”或”不許可”,語氣比較強烈。 例如: you mustn't play on the road. you mustn't eat anything until you see the doctor.