题目内容
6．那个人不可能是王先生，王先生去澳大利亚了．The mancan'tbeMr．Wang，Mr．Wang has gone to Australia．
分析 can't be．
解答 答案：can't be．结合句意是否定猜测，表示不可能是，用can't+动词原形，这里是原形be，故答案是can't be．
点评 must表示推测时，只用于肯定句，表示很大的可能性，意为"一定，准是，必然会"．其否定形式是 can't/couldn't （不可能）
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