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He ______ the 8:25 train because he didn’t leave home till 8:30.A、couldn’t have
He ______ the 8:25 train because he didn’t leave home till 8:30.A、couldn’t have
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2025-07-30
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问题
He ______ the 8:25 train because he didn’t leave home till 8:30.
选项
A、couldn’t have caught
B、ought to have caught
C、shouldn’t have caught
D、mustn’t have caught
答案
A
解析
couldn’t + have+过去分词,表示对过去已经发生过的事的一种否定推测,意为“不可能做了某事”。注意:could一般用来表示猜测,could have done表示对过去的事情的猜测。
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