过去将来完成进行时是英语时态中比较常见的一种，但是，大家对它的用法可能还是不太了解。今天，小编为大家准备了相关的语法知识，将要为大家来讲解一下：过去将来完成进行时的概念和用法，一起来看看吧！
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在特定的语境中，有时过去将来完成进行时可用虚拟语气中。如：
At the time of the accident I was sitting in the back of the car，because Tom’s little boy was sitting beside him in front. If Tom’s boy had not been there I would have been sitting in front. 事故发生的时候，我坐在车子的后座，因为汤姆的小儿子坐在前边他的身旁。要是汤姆的孩子没坐在那里的话，我就会坐在前面了。
一、过去将来完成进行时的情态意义
“would have been+现在分词”结构除用于表示过去将来完成进行时外，有时其中的 would 也可能是情态动词，具有情态意义，比较表示推测或猜想等。如：
“What interesting job have you found?” Helen asked him; he knew she would have been thinking about it. “你找到什么有趣的工作啦?”海伦向他问道。他知道海伦一定会一直想这件事的。
二、过去将来完成进行时补充例句
过去将来完成进行时不是一个常用时态，一般语法书也讲得到很少，所以能找到的权威例句也很少。为满足部分高级读者朋友的需要，我们特从“英国国家语料库”中查了部分例句，供大家参考：
◇Latterly, they would have been reading Virgin books, watching Virgin videos and Virgin films.
◇New York was swathed in sunlight and the heat would have been stifling had it not been for a gentle easterly breeze blowing in from the Atlantic.
◇Maybe we, it may well be that you were with other people, I wonder what sort of things if you were in a condition of speaking, what sort of things you would have been saying to them.
◇Obviously no expense was being spared to make the night a success, and in different circumstances she would have been looking forward to it, but now, as silence settled over the car, she could feel herself growing tense.
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怎么样，看完了这篇文章，大家是不是对过去将来完成进行时的用法有了初步的了解了呢？喜欢就赶快收藏起来吧~
