had been done的意思|示意
过去完成时的被动语态
had been done的网络常见释义
过去完成时 ... 7. 过去进行时 (was/were being done) ： 8. 过去完成时 (had been done) ： 9. 带情态动词的被动语态 (can be done) ： ...
去完成时 过去完成时(had been done)： The work had been finished before dark. 9.
被动形式 【解析】本题考查book作为动词的用法和过去完成时被动形式（had been done）。book预定（房间、票等）,这里票与预定是被动关系。
过去完成 ... 过去进行 was/were being done 过去将来 would be done 过去完成 had been done ...
had been done相关短语
1、 Another killing had been done 又一场杀戮展开 ; 又一场屠戮开展
2、 had done had been done 过去完成体
3、 I had been done 过去完成时