What he said mustn't be true.so don't believe him．题目和参考答案——青夏教育精英家教网—

12．What he said mustn't be true，so don't believe him．

分析他说的不可能是真的，因此不要信他．

解答答案：mustn't改为can't
解析：根据句意"他说的不可能是真的，因此不要信他"可知该把mustn't"禁止；千万不可以"改为can't"不可能"一词．拓展：must意为"一定；必须"，但是其否定形式mustn't意为"禁止；千万不可以"．

点评本题考查句子改错，做此类题目时一定要仔细分析句子结构，综合句意、语法等各方面判断错误点在哪以及该如何修改．

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