We know exactly when it was built-construction started in 2547 B.C.E.-about 4,500 years ago.We know who had it built,that was the Pharaoh Khufu,and we know who oversaw its construction: the Pharaohs brother. 想问下had it built这里可以had built it吗？这里的built是否过去分词和have+宾语+done的形式，还是过去式做被动语态？有点搞混了,谢谢！
想问下 had it built 这里可以had built it吗？这里的 built 是否过去分词和 have+宾语+done的形式，还是过去式做被动语态？有点搞混了,谢谢！
（1）had it built 和 had built it，没办法相等。
单看时态就有差别：前者是一般过去时，后者是过去完成时。
语义上也有差别：前者可能是主语自己建造，也会是找其他人建造。后者是主语自己建造。
（2）have sth. done 这里，done 是过去分词，是非谓语动词。表示“宾语被做”，体现被动意义。动词的过去时是谓语动词的时态范畴，过去分词是非谓语的范畴，两个定义。
（3）以下是我以前的一个问答，与本题有关，供参考。
have sth. done 肯定是“让其他人做某事”吗？
【问】以前学 have sth. done 这个句型时，意思是“让其他人做某事”。这次课本复习资料有个句子是 When do the students have to have their poems completed? 这个句子是否说“学生要让其他人帮他们完成诗歌?” have sth. done 不是“让其他人做某事”吗?
【答】你这个问题提得好。这句话的意思应当是：“学生什么时间需要写完他们的诗歌？”显然是“自己写诗歌”，不是叫人代笔。have sth. done 未必全都是“让其他人做某事”，有时是主语自己去做，这要具体状况具体剖析。这个句型的意思有3种状况，现分别举比如下：
表示主语主动或者只能让其他人做的事情：
When did you have your hair cut?
Later, Catherine II had the Amber Room moved to the palace outside St Petersburg.
表示主语遭遇见不想发生的事情：
She had her hands burnt when she was cooking supper.
Tom had his pocket picked in the supermarket.
表示主语自己做而不是让其他人做的事情：
After they had their homework finished, the children went out to play.
Have your medicine taken three times a day. Don’t forget it.
