题目内容

—Must I take the medicine every day?
—No, you _______.
A.must  B.mustn’t    C.needn’t
C

试题分析：句意：我每天都必须吃药吗？不，你不需要。must提问，否定回答用need’t，故选C
点评：情态动词用法较多，无人称和数的变化, 情态动词后面跟的动词需用原形,否定式构成是在情态动词后面加 "not"。 个别情态动词有现在式和过去式两种形式, 过去式用来表达更加客气, 委婉的语气, 时态性不强, 可用于过去，现在或将来。must 提问的肯定回答用mustn’t.
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