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。
3、过去完成时的被动语态有以下三种形式:
(1)肯定结构:主语+ had been done +其他成分
(2)否定结构:主语+ had not been done +其他成分
(3)疑问句结构:had +主语+ been done +其他成分
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