过去完成时。表示过去某一时间或动作以前已经发生或完成了的动作，对过去的某一点造成的某种影响或是结果，用来指在另一个过去行动之前就已经完成了的事件，侧重事情的结果。
双语例句
1、The submarine had had time to submerge before the warship could approach.
潜水艇没等军舰靠近就及时潜入水下了。
2、She had had a rootless childhood moving from town to town.
她小时候居无定所，在各地流浪。
3、It transpired that the gang had had a contact inside the bank.
据报这伙歹徒在银行里有内应。
4、She had had the foresight to prepare herself financially in case of an accident.
她有先见之明，经济上作了准备以防万一发生事故。
5、They had had their pet dog stuffed.
他们请人把他们的宠物狗制成了标本。