2. 外语
  3. Which of the following sentences is the correct answer to "It must be our boss"?

Which of the following sentences is the correct answer to "It must be our boss"?

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问题 Which of the following sentences is the correct answer to "It must be our boss"?
选项 A、No, it can’t be him.
B、No, it mustn’t be him.
C、No, it needn’t be him.
D、No, it doesn’t have to be him.
答案A
解析 情态动词题。本题考查的是情态动词must的否定形式。must有三种否定形式：must表示必须时，其否定形式为don’t have to或needn’t；must表示推测时，意为“一定，肯定”，其否定形式为can’t，意思是“一定不，不可能”；must not(mustn’t)表示禁止时，意为“一定不要，不准”。原句中must是表示肯定的推测，所以其否定形式为can’t，故选项[A]为答案。
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