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You________John in the street this morning.He’ s been dead for ages.A、mustn’t se
You________John in the street this morning.He’ s been dead for ages.A、mustn’t se
游客
2024-08-05
13
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问题
You________John in the street this morning.He’ s been dead for ages.
选项
A、mustn’t see
B、mustn’t have seen
C、couldn’t see
D、couldn’t have seen
答案
D
解析
A选项mustn’t表示“禁止做…”,从句子意思可知,看见的不可能是约翰。Must have done表示对过去情况肯定的推测,而对过去情况否定的推测用couldn’t have done,故选D。
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