被动语态讲解公开课PPT课件.ppt

初中被动语态的奥秘 中考必考的重点语法第1页/共41页 语态：表示主语和谓语动词之间的关系。英语有两种语态，即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。如：Many students study English.(主动语态) English is studied by many students. (被动语态)语态第2页/共41页 我每天吃苹果.I eat apples every day.Apples are eaten by me every day.苹果每天被我吃.第3页/共41页 他杀鸡He kills chicken.Chicken is killed by him .鸡被他杀了第4页/共41页 Beast catches the princess . 怪兽抓了公主 The princess is caught by beast. 公主被怪兽抓走了。第5页/共41页 人们读名著 People read great booksGreat books are read by people名著被人们读第6页/共41页 They plant flowers.他们种花。花被他们种。Flowers are planted by them第7页/共41页 He plays basketball.他打篮球。篮球被他打。Basketball is played by him.第8页/共41页 主动语态变被动语态的方法1.把主动语态的宾语变为被动语态的主语。2.把主动语态的谓语变为被动语态的谓语。3.把主动语态的主语变为被动语态的by 短语。（① by短语可以省。② by短语 后跟代词的宾格。）口诀：主变宾，宾变主，谓语动词变be+done.by the teacher.The teacher often asks him questions.Heis askedquestions第9页/共41页 被动语态（The Passive Voice) 一般现在时被动语态的构成： 主语+am/is/are+及物动词的过去分词 动词过去分词的构成规则（与动词过去式构成规则一样）：1、一般在动词原形末尾加-ed，looked played2、结尾是e的动词加-d ， lived used3、末尾只有一个辅音字母的重读闭音节词，先双写 这个辅音字母，再加-ed， planned tripped4、结尾是“辅音字母+y”的动词，先变“y”为“i” ， 再 加-ed ， study---studied， carry---carried第10页/共41页 1、speak spoke spoken 2、use used used3、make made made 4、write wrote written5、grow grew grown 6、plant planted planted7、produce produced produced 8、ask asked asked9、plan planned planned 10、send sent sent11 、 build built built 12、invite invited invited不规则动词的过去分词要牢记请写出下列动词的过去式和过去分词：sing----sang----sungbuild----built----built第11页/共41页 把下列的句子变为被动语态的句子：1、They speak English in Canada .(English….)2、People use wood for making tables. （wood….）3、The make computers in the USA.（Computers…）4、They grow rice in So