有情态动词时主动语态怎样变为被动语态，例句

问题描述

精选答案

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 to him by me. 宾语提前做主语+had+been+V过去分词。