1、Unit 5-Unit 7被动语态何为被动语态？当句子的当句子的主语主语是动作的是动作的执行者执行者时，谓时，谓语的形式是语的形式是主动语态主动语态。当句子的。当句子的主语主语是动作的是动作的承受者承受者时，谓语要用时，谓语要用被动语被动语态态被动语态的标志：被动语态由助动词被动语态的标志：被动语态由助动词be+过去分过去分词词构成，时态通过构成，时态通过be表现出来。表现出来。一般现在时被动语态His brother washes bowls every day.主谓宾(受动者）Bowlsare washedbyhis brotherevery day.结构：S(主语）主语）+am/is/a
2、re +过去分词过去分词一般现在时被动语态练习They play football on Sunday.Football is played by them on Sunday.Lucy does the homework in the evening.The homework is done by Lucy in the evening.They often use computers in class.Computers are often used by them in class.一般过去时被动语态He looked after the little baby yesterday主谓宾
3、（受动者）The little baby was looked afterbyhimyesterday结构：S+was/were+过去分词过去分词一般过去时被动语态练习They built the tall building last year.The tall building was built by them last year.He took good care of his little brother yesterday.His little brother was taken good care of by him yesterday.We cleaned our classro
4、om just now.Our classroom was cleaned by us just now.一般将来时被动语态Tom will clean the room tomorrow.主谓宾The room will be cleaned byTomtomorrow.结构：S+will+be+过去分词过去分词一般将来时被动语态练习We will have a sports meeting next week.A sports meeting will be had by us next week.Children will take some photos in the schoolya
5、rd tomorrow.Some photos will be taken by children in the schoolyard tomorrow.The headmaster will give a talk this afternoon.A talk will be given by the headmaster this afternoon.情态动词的被动语态Amy can take good care of Gina 主谓宾Ginacan be taken good care ofbyAmy结构：结构：S+情态动词情态动词+be+过去分词过去分词can/may/must/need
6、/would/should/would/could/might.情态动词的被动语态练习He can take care of the baby.The baby can be taken care of by him.Lucy may draw the pictures.The picture may be drawn by Lucy.You must turn off the lights.The lights must be turned off by you.现在进行时被动语态Some workers are painting the rooms now主谓宾The roomsare b
7、eing paintedbysome workersnow.结构：S+am/is/are+being+过去分词过去分词现在完成时被动语态We have made twenty more keys主谓语宾Twenty more keyshave been madebyus结构：S+have/has+been+过去分词过去分词被动语态特殊情况They make us do all the work.We are made to do all the work by them.We often hear her sing songs.She is often heard to sing songs
8、by us.2.使役动词let/make/have,感官动词see/watch/feel/hear/notice等在主动语态中省略to，在被动语态中加上to被动语态特殊情况He gives me a flower everyday.被动1 I am given a flower by him everyday.被动2 A flower is given to me by him everyday.My mother bought me a computer.被动1 I was bought a computer by my mother.被动2 A computer was bought for me by my mother.当动词带双宾时（一个指人的宾语，一个指物的宾语），指人的宾语提前做被动句的主语时，指物的宾语照抄；如果是指物的宾语提前做被动句主语，指人的宾语前需加介词“to/for”,常见加to的动词有give，send,teach，write,show,pass,ask,tell常见加for的动词有make,draw,buy
