Unit 2 Discovering Useful Structures 被动语态课件-2023-2024学年高中英语人教版（2019）必修第二册

被动语态 (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(The Active Voice)。当句子的主语是 动作的承受者时，谓语要用被动语态(The Passive Voice)。被动语态由be +done/ p.p(及 物动词的过去分词)构成，时态通过be表现出来。 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。 一般现在时态的被动语态：am / is / are + p.p 一般过去时态的被动语态：was / were + p.p 一般将来时态的被动语态：will be + p.p 现在进行时态的被动语态：am / is / are being + p.p 过去进行时态的被动语态：was / were being + p.p 现在完成时态的被动语态：have / has been +p.p 过去完成时态的被动语态：had been + p.p 含有情态动词的被动语态：can / may / must... be + p.p 主动句变被动句的方式： 主动句： 主语 + 及物动词谓语 + 宾语 被动句： 主语 + be +及物动词过去分词 + by 宾语 He watered the flowers. The flowers were watered by him. 用所给词的适当形式填空 1.Teenagers should ____________(allow) to go out at night. 2.The telephone _____________(invent) by Bell. 3.English ___________(speak) in China. 4.The car _________(make) in China. 5.The room must _____________(clean) every day. 6.He _________ (look) after his sister next week. He ____________(look) after by his sister next week. be allowed was invented is spoken is made be cleaned will look will be looked 将下面的句子变为被动语态 1.We clean the classroom in the afternoon. 2. His brother will wash his car tomorrow . 3.They made shoes in that factory last year. 4.Lucy can finish the homework in time. →The classroom is cleaned by us in the afternoon. →His car will be washed by his brother tomorrow. →Shoes were made by them in that factory last year. →The homework can be finished by Lucy in time. 动词短语的被动语态(别忘记加介词/副词) 一般来说，只有及物动词才有被动语态，因为只有及物动词才有承受者。 但许多不及物动词加上副词或介词构成动词短语也相当于及物动词的用法，可以带宾语，因而也有被动语态。 动词短语是不可分割的整体，在变被动语态时，不可丢掉构成动词短语的副词或介词。 eg. He looks after his mother. His mother was looked after by his mother. 1. Our school will put off the School Sports meeting until December. The School Sports meeting ___ ____ ___ ___until December. 2. People talked about the accident . The accident_____ _____ _______ by people. 3. You should pay more attention to your study this year. Your study ______ ___ _____