過去將來完成進行時與虛擬語氣進行合作擦出的火花
現在來分解過去將來完成進行時的第二部分的解析。其實在日常生活中，過去將來完成進行時一般不是一個特別常用的時態。如果想表示與過去事實相反的虛擬語氣，此時條件從句的謂語用過去完成時(had+過去分詞)，而主句謂語則通常用過去完成時（would have+過去分詞），當然，主句謂語也可根據情況使用“should (could, might)+have+過去分詞”。如：
If I'd left sooner, I'd have been on time.
要是我早點動身，我就準時到了。(但我動身太遲了)
If we had found him earlier after the earthquake，we could have saved his life.
地震之後要是我們當時早點找到他的話，我們就可以救活他。(其實真正的意思是很可惜我們找到他的時候已經爲時已晚
If I had known that you were coming so early, I would have met you at the bus station.
要是我知道你這麼早要來的話，我就會在車站接你了。
If she had lived, some time in near future，she would have done something extraordinary.
如果她當時在世的話，她肯定會做出一些了不起的事情。
If I had known how the girl felt, I would never have let her adopted by them.
我要是早就知道那個女孩的想法的話，我就不會讓他們一家領養她了。
We would have forgotten their 7 years of wedding anniversary, if you hadn’t reminded us.
要不是你提醒我們，我們就會忘記他倆結婚7週年紀念日了。
Our lives would have been in a state of chaos and poor if we had not known much about our planet.
要不是我們對於地球的認識，我們的生活就會貧窮且混亂不堪。
