过去完成时的结构

过去完成时的结构是什么

1、过去完成时主动语态 I had given him three books. S主语+had+V过去分词+其他成分 2、转换成被动语态 Three books had been given ......

1、过去完成时主动语态 I had given him three books. S主语+had+V过去分词+其他成分 2、转换成被动语态 Three books had been given ......