问题标题：
issupposedtohavedone跟wassupposedtodo的有区别吗,举个例子,Thetrainissupposedtohavearrivedanhourago跟Thetrainwassupposedtoarriaveanhourago.这两个句子都是一个意思吗,
问题描述：
issupposedtohavedone跟wassupposedtodo的有区别吗,
举个例子,Thetrainissupposedtohavearrivedanhourago跟Thetrainwassupposedtoarriaveanhourago.这两个句子都是一个意思吗,
刘庭荣回答：
这两个句子(Issupposedtohavedone/Wassupposetodo)有区别.但你举的列子,是正确的.－－TRAIN这个列子,是一个意思.Issupposedtohavedone:是应该有去做完了.wassupposedtodo:是（过去式）应该做了.have...
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