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1、一般过去时的被动语态 -The Passive Voice,一般过去时的被动语态 概念：被动语态表示主语是动作的承受者。在以下三种情况下，常用被动语态。 1） 强调动作的承受者，而不强调施动者。 2） 不必提及施动者。 3） 不知道施动者。 结构: was/were+动词的过去分词,一般过去时被动语态的三种句式结构: 肯定句： 主语+was/were+动词的过去分词+(by+ 动作执行者) 否定句： 主语+was/were+not+动词的过去分词+ (by+动作的执行者） 一般疑问句： Was/Were+主语+动词的过去分词+ （by+动作的执行者）,I bought a computer l
2、ast term. A computer was bought (by me) last term.,eg. He invented the light. The light was invented by him.,eg. 1) Was the song composed by a soldier? 这首歌是由一名士兵创作的吗? 2) Such books were written for children. 以前这种书是儿童读物。 3) We were shown the machines they had turned out. 他们让我们参观了他们生产的机器。,Exercises： We built a library last year in our school. A library was built by us last year in our school.,Thanks for listening!,