过去将来完成时由“would+have+过去分词”构成。
过去将来完成时的基本用法就是：表示从过去某一时间来看将来某时会已经完成的动作。例如：
1.I thought Sophia would have told you something.
我想索菲娅会已告诉你一地情况。
2.He knew by the time he arrived she would have gone home.
他知道他到时她会已经回家。
3.The day was drawing near when we would have completed the reservoir.
我们建成水库的日子不远了。
4.He said he would have done with my camera by the end of next month.
他说到下月底就不用我的照相机了。
5.I guessed that Mother would have made some sandwiches by the time we got back.
我猜我们回来时妈妈已经做好一些三明治了。
6. I thought he would have told you something important.
我想他会已告诉你重要的事情。
7. He knew by the time she would have left him forever.
他知道到那时她会永远的离开他。
8. The day was not so far when we would have finished this project.
我们完成这个项目的日子不远了。
9. He said he would have done with my camera by the end of next month.
他说到下月底就不用我的照相机了。
10. I guessed that Mother would have made delicious dinner by the time we got back.
我猜我们回来时妈妈已经做好了美味的晚餐。