过去将来完成时(past future perfect tense)表示在过去将来某一时间以前已经完成的动作。它的形式由should(第一人称)或Would(第二、三人称)加have再加过去分词构成。美国英语一律用Would。

用法举例：

He said he would have paid me back the money by the end of the week.他说将在周末前还我钱。

We told him that we should have returned to the camp by four o'clock.我们告诉他我们将于四点前回营地。

I hoped she would have finished the work before I got back.我希望她在我回来之前做完那活儿。

种类

完成进行时有现在完成进行时、过去完成进行时、将来完成进行时和过去将来完成进行时四种