关于Have和Had 还有Have been和Had been的区别

从你的问题可以看出你真的有点混乱哦.
have done 是现在完成时 have been done 是它的被动态形式
比如说 i have turned off the lights. 说明我已经把灯关了,灯现在是灭的.
用被动态来做就是the lights have been turned off.
had done 是过去完成时 had been done 是它的被动形式
i had turned off the lights before i left the office.
我离开办公室之前就已关灯了.
我离开办公室是一个过去的动作,那关灯的动作是发生在离开之前,也就是所谓过去的过去.
所以用了had turned off.
被动态 the lights had been turned off before i left the office. 这个应该就能理解了吧~~
加油,时态这东西确实有点难,容易混乱~~