ewenwen2007 发表于 2007-9-20 16:43:14

could vs could have done

could mean 'would be able to'         
could have mean 'would have been able to'   
could = 可以 (还没发生的事)
eg. she could come. 他可以来.

could have = 原本可以/应该要 (结果没有)
eg. she could have came. 他应该可以来的.
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