_______________________(她肯定没有收到我的来信)，otherwise she would have replied before now

游客2023-09-17 23

问题 _______________________(她肯定没有收到我的来信)，otherwise she would have replied before now．

选项

答案 She couldn’t have received my letter

解析考查点：情态动词+完成式表推测。根据题干中的虚拟语气可知是过去时间。对过去进行推测可用 must have done表肯定的推测，或couldn’t have done表否定的推测。

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