被

Book 3 Module 1 Grammar 1
被动语态 (Passive
1. 概念：语态表示句子的主语和谓语动作之间的关系1）主动语态：表示主语是动作的 执行者。2）被动语态：
2. 结构：be+过去分词被动语态时态变化反映在be动词形式上.一般现在
am / is / are + done
was / were + done
shall / will be + done
am / is / are going to be + done
would / should be + done
am / is / are being + done
was / were being + done
have / has been + done
had been + done