现在完成时:
already,yet,now,just,by this time,today,this morning,this week,recently,lately,since then,often,(ever)since,before,ever。
过去完成时常用于以下固定句型:
1)hardly, scarcely, barely + 过去完成时+ when + 过去时。例如:
Hardly had I got on the bus when it started to move.
2)no sooner +过去完成时+ than +过去时。例如:
No sooner had I gone out than he came to see me.
简介
过去完成进行时(The Past Perfect Progressive)强调动作从过去的过去开始一直延续到过去某个时间点。在过去某个时间点时,这个动作可能刚刚停止,也可能仍然在进行。在英语时态中,“时“指动作发生的时间,”态“指动作的样子和状态。