Ask & Learn闻问切英语口语:Is Going to Have Been Painted

读者 Eric 寄来句子 "The mural is going to have been being painted by the famous artist for over 6 months by the time it is finished"。Eric想问句中的 "is going to have been being painted" 是属于什么时态？

首先，解答 Eric 的问题前，我猜being应该是个笔误。可以略去。

我们现在把这组动词分析一下。 is going to 的作用相当于助动词的 will 或 shall，属于 future tense。Have been painted 是 have painted 的 passive voice（被动式），而 have painted 属于 present perfect tense。我们如果把句子改写，就变成 "The mural will have been painted by the famous artist..."。

这个动词很明显属于 future perfect tense，只不过以 passive voice 的形式表达而已。

Future perfect tense 的用法是表示在将来某一时刻已经完成的动作。在 Eric 的例句中，这个将来的时刻就是壁画完成之日，到了那天，这著名的画师将会花了六个月的时间在这壁画上了。

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