将来完成进行时的形式: I(or You,He,John,They,Those men)will have been doing it 例:I shall have been doing it. 将来完成进行时的用法和将来完成时的用法很相近,主要是将来完成进行时更多强调动作本身,但这个时态用得不多。 将来完成进行时的用法: 1)表示将来某时某事之前业已在发生的动作: He will have been playing on the piano by that time. 他在那个时候之前应该一直都在弹钢琴。 2)表示将来某时某动作已持续多久: By the time the sun rises, I shall have been sleeping for nine hours. 太阳升起来之前,我已经(不停地)睡了9个小时了。 He will have been studying Chinese seven years by 1980. 到1980年之前,他就已经学了7年中文了。 By six this evening I shall have been working for ten hours. 今天傍晚六点前,我就已经(连续)工作了10个小时了。 It will have been raining for a whole week if it rains again tomorrow. 如果明天还继续下雨,这雨就已经连着下了一整个礼拜了。 3)表示一种猜想,实际上指现在情况: He will(=may)have been waiting for me. But I can not go,because it is raining. 他可能在等我。但我现在还不能走,因为下雨了。 It is winter, it will have been snowing in the north. 冬天到了,北方可能已经开始下雪了。
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