英语自学网 发表于 2016-7-11 22:29:44

新概念二册语法精粹十四．过去将来完成时：would / should have

十四．过去将来完成时：would / should have + 过去分词
       
        表示从过去某个时间看将来某时之前已经完成的动作。
He said that they would have arrived by seven o'clock.
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