Question

英语中什么是被动时态?

Answer 1

英语的语态共有两种：主动语态和被动语态。主动语态表示主语是动作的执行者，被动语态表示主语是动作的承受者。被动语态(passive voice)是动词的一种形式，用以说明主语与谓语动词之间的关系。
被动语态的结构：be+及物动词的过去分词
例句：
主动：I trust you. -->被动：You are trusted by me.

主动：He received a letter. -->被动：A letter was received by him.
主动：I am riding a bicycle. -->被动：A bicycle is being ridden by me.

被动语态：http://baike.baidu.com/link?url=JDESfUWp9Xqt4iEczNagaRbnPOsKECBaWU-S2-T5ySemkJuFdzOC5sRcyvkLw0CZyU8jdynvRtrY0v3ADVByGXp1vZWcnE1bZUUMIf4iE_CqsWzf1SzDiD8aXNns1hXP