中考被动语态复习 一.动词被动语态基本概念和形式 详解 一、动词被动语态使用 1、表示主语是动作的承受者 The classroom was cleaned by the students this morning
The book was written by a middle school teacher
The lost bicycle was found by a farmer by the river
2、侧重说明主语接受动作,无须或无法知道动作的执行者 Letters are collected from this mail-box at 7:30 a
Air pollution has been reduced in our city
The ground was covered with snow
二、动词被动语态形式 1、动词被动语态由 be+ 及物动词的过去分词构成
动词被动语态的时态由助动词 be 的各个时态变化形式表示; 时态 被动语态结构 一般现在时 am / is / are done 一般过去时 was / were done 现在进行时 am / is / are being done 过去进行时 was / were being done 一般将来时 shall/ will/ be going to be done 过去将来时 would be done 现在完成时 have / has been done 过去完成时 had been done 2、含情态动词的动词被动语态结构为“情态动词+be+过去分词”
注意 1: 1、把原来的宾语提到前面作被动语态的主语; 2、把动词变成“be + 过去分词”; 3、可以主动语态中的主语变为介词by的宾语
注意 2: “主语+谓语动词+直接宾语+间接宾语”结构的被动语态:这类结构