Unit7Grammar课件2021-2022学年牛津译林版英语八年级下册

Unit 7 International charities Grammar Passive voice in the simple present and past tenses 一般现在时和过去时的被动语态 1. The plane is used as a training centre . 2. His eye problem was cured two months ago . 3. During my last visit, 150 patients were operated on. 4. About 80% of these cases can be prevented or cured. passive voice 被动语态 语态是动词的一种形式，表示的是主语和谓语之间的关系。 英语中的语态有两种： 主动语态 被动语态 Volunteer doctors do operations. 主语 谓语 宾语 动作执行者 动作 动作承受者 总结：在英语句子中动作的执行者做主语，动作的承受者做宾语，这种句子叫做主动语态 Volunteer doctors do operations. = Operations are done by volunteer doctors. 主语 谓语 宾语 动作承受者 动作 动作执行者 总结：在英语句子中动作的承受者做 主语，这种句式叫做被动语态 当主语是谓语的执行者时，用主动语态。 当主语是谓语的承受者时，用被动语态。 We clean the classroom every day. 我们每天都打扫教室。 The classroom is cleaned (by us) every day. 教室每天都被(我们)打扫。 一般现在时: am/is/are + done 一般过去时: was/were + done 主动语态 被动语态 主: I learn English. 被动语态 被: English is learned by me. 7 判断：被动语态( A )/主动语 态( B );划出谓语动词部分． 1）Millie and Amy took the little cat to the animal center yesterday. 2）The 79-year-old man was saved out of a fire last year. 3）This kind of cake is called mooncake. 4）People use a keyboard to type information into the computer. 5）The windows in our classroom are cleaned once a week. B B A A A 8 The students clean the classroom every day. The classroom is cleaned by the students… 如何把主动语态变成被动语态？ 主语 动词 宾语 主语 be + done by + sb 主动变被动口诀： 1. 宾语变主语 2. 动词变 be + done 3. 主语变 by + sb. by many students. 1.Many students study English. English is studied 2.They make shoes in that factory. Shoes are made by them in that factory. 一）一般现在时的被动语态结构： is/are+过去分词 1. They bought a computer last term． by them last term. 2.一般过去时的被动语态结构： was/were +过去分词 last year. 2.We planted many trees last