初中英语被动语态复习课件33PPT

Passive voice 被动语态基本用法 当句子的主语是动作的执行者时，谓语的形式是主动语态。当句子的主语是动作的承受者时，谓语要用被动语态。被动语态由助动词be+过去分词构成，时态通过be表现出来。 be + Vp.p(动词的过去分词） 1)be 动词可以随时态人称的变化而变化 am/ is / are + V(过去分词） was/ were+ V(过去分词） will be + V(过去分词） 情态动词+ be + V (过去分词） 1.规则动词的过去分词： 1)一般情况在动词原形后加-ed watch---watched 2)以不发音e结尾的加-d practice---practiced 3)以辅音加y结尾的，去y变i加-ed study---studied 4)以重读闭音节结尾，末尾只有一个辅音字母， 先双写该辅音字母，再加-ed stop---stopped 2.不规则动词的过去分词： am is are been have has had do done write written go gone He plants trees in spring. 主 谓 宾(受动者) Trees are planted by him 改为被动语态 in spring. 主动语态变被动语态口诀： 宾语提前主语变， 原主变宾by后见， 时态人称be关键。 Tom will clean the room tomorrow. 主 谓 宾(受动者) The room will be cleaned by Tom tomorrow. His brother washes bowls every day. 主 谓 宾(受动者) Bowls are washed by his brother every day. 1.They make shoes in that factory. 主语+及物动词+宾语 Shoes are made (by them) in that factory. 一般现在时： S(主语）+am/is /are +过去分词 2. They bought ten computers last term． Ten computers were bought