初中一般过去完成时的例句包括：

动作在前的，要用过去完成时

当我到车站时，火车已经离开了。

动作在后的，要用一般过去时

他完成作业后，睡觉了。

by the time的从句用过去时，主句用过去完成时

Did you see Tom at the party？ No, he had left by the time I got there.

表示过去某一时间或动作以前已经发生或完成了的动作

他说他自1949年以来一直在那家工厂工作。

过去完成时用来指在另一个过去行动之前就已经完成了的事件

当我醒来时，雨已经停了。

过去完成时的其他例句

I had stayed in Beijing for three years by then.

Until then he had known nothing about it.

The boy told his mother that he had been ill since he came back from the school.

She had only been here for ten minutes when Jim came in.

When they got to the field, the football match had already started.

这些例句展示了过去完成时在描述过去事件中的时间顺序和状态方面的应用。希望这些例句能帮助你更好地理解和掌握一般过去完成时。