Unit 9 When was it invented?When was it invented? No. 11 Middle SchoolPeriod 1What are they? They are four inventions of Chinagun powderpaper makingprintingcompass Make a list of inventions you know. -- Who invented the telephone ?-- Who was the telephone invented by ?-- Bell invented the telephone. -- It was invented by Bell.被动语态被动语态 (Passive Voice)结构 : be + V-p.pam/are /is + 动词的过去分词was/were + 动词的过去分词 一般现在时的被动语态一般过去时的被动语态Many people speak English.( 主动语态 )English is spoken by many peopleThe naughty boy broke the window yesterday.( 主动语态 )The window was broken ( by the naughty boy) yesterday. We bought some books. 主动句与被动句之间的转换Some books were bought ( by us ) 主语 谓语动词主动语态的过去式 宾语主语 谓语动词被动语态的过去分词 介词+ 宾语主动句变为被动句所遵循的 4 个步骤：1. 把原主动句中的宾语变为被动句的主语 .2. 把动词变为被动形式即 be + 过去分词，并注意其人称和数随主语的变化，而动词的时态则保持不变。3. 原主动句的主语如需要则放在 by 后面以它 的宾格形式出现（注代词的宾格），如不需要则可省略。4. 其它的成分（定语、状语）不变。被动语态的几种句型1 肯定句 主语 + be + 过去分词 + (by…)A sweet song was sung by her on the stage.2 否定句 主语 + be + not + 过去分词 + (by…)3 一般疑问句 Be + 主语 + 过去分词 + (by…) A sweet song wasn’t sung by her on the stage.Was a sweet song sung by her on the stage?4 特殊疑问句 疑问词 + be + 主语 + 过去分词 + (by…)Where was a sweet song sung by her? 请把下列的主动句变为被动句1.He wrote an article last week. An article was written by him last week. 2.The people make history.History is made by people.3.Do people use Chinese only in China?Is Chinese used by people only in China?4.They didn’t visit the city two years ago. The city wasn’t visited...
