英语语法——could have done 表推测过去
She could have gone off with some friends.她可能和几个朋友出去了。
This glass is cracked. Someone could have dropped it.
这个玻璃杯破了。可能是谁把它掉在地上了。
- The money has disappeared! Who could have taken it?
- Tom could have taken it; he was here alone yesterday.
钱不见了！会是谁拿走的呢？
可能是汤姆拿走的；昨天只有他一个人在这儿。
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