过去将来完成进行时 由“would have been + 现在分词”构成，表示从过去某时看来未来某时以前会一直在进行的动作。
He told me that he would have been teaching here for ten years by July. 他告诉我到七月份他在这儿任教将满十年了。
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过去将来完成进行时 由“would have been + 现在分词”构成，表示从过去某时看来未来某时以前会一直在进行的动作。
He told me that he would have been teaching here for ten years by July. 他告诉我到七月份他在这儿任教将满十年了。