Unit1 When was it invented SectionA课件1 2024-2025学年鲁教版(五四学制)九年级英语全册

Unit 1 When was it invented? Can you read them ? 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1840 1635 1729 1632 1989 1923 1998 2008 2013 2014 1600 1800 2000 Can you tell me ? When were you born ? When was your mother born ? When was your best friend born ? What are the Four Great Inventions in ancient China? Do you know? paper-making 造纸术 compass 指南针 printing 印刷术 gunpowder 火 药 造纸术 印刷术 Look at the things. In what order do you think they were invented? 1a A: I think the calculator was invented before the computer. B: well, I think the calculator was invented after the computer. Talk about with your parterner. Listen and match the inventions with the dates. 1b ___ 1876 ___ 1885 ___ 1927 ___ 1971 ___ 1976 d a e c b 单击此处编辑母版文本样式 第二级 第三级 第四级 第五级 Who invented the car? _______ invented the car. Karl Benz Karl Benz The car____ ________ by______. was invented him 1885 When was it invented ? It was invented in 1885. 1876 Bell Who invented the telephone ? Bell invented the telephone。 The telephone was invented by Bell. It was invented in 1876. Sample dialogues: A: When was the telephone invented? B: I think it was invented in 1876. A: When was the car invented? B: I think it was invented in 1885. I think it was invented after the telephone. Pairwork 1c 被动语态 （The Passive Voice) .主动语态与被动语态： 英语动词有两种语态,即主动语态(The Active Voice)与被动语态（The Passive Voice)。 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。 e.g. 1.They make trains in Zhuzhou . Trains are made in Zhuzhou. 2.The farmers grow cotton every year. Cotton is grown by the farmers every year. 主动语态 被动语态 主动语态 被动语态 e.g Many people speak English. English is spoken by many people. 主动语态变被动语态的步骤： 1、主动语态的宾语变为被动语态的主语； 2、主动句的谓语动词变为被动结构； 3、主动句的主语变为被动句的宾语，由by 引出，当不强调动作的执行者时，常省略。 4.其它成分不变。 变被动语态时需要注意的事项 一变 二套 三注意 宾变主，主变宾，宾语前面by跟，谓语动词变过分，不忘前面be动词跟 套时态，主被动时态一致 注意因人称的变化而引起的主谓一致问题。 各种时态的被动语态的构成： 1.一般现在时态 am, is, are +过去分词 2.一般过去时态 was, were +过去分词 3.一般将来时态 will/am.is.are going to + be +过去分词 4.过去将来时态 would/was.were going to + be + 过去分词 5.现在完成时态 have, has + been +过去分词 6.过去完成时态 had + been +过去分词 7.现在进行时态 am, is, are + being +过去分词 8.过去进行时态 was, were + being +过去分词 9.含情态动词的 情态动词 + be +过去分词 所有时态的被动语态否定就是在 最前面的助动词后加 not 疑问就是把最前面的助动词提前。 Many trees are not being planted now Are many trees being planted now? 把下列的句子变为被动语态的句子： 1、They speak English in Canada . 2、People used wood for making tables. 3、They are making computers in the USA. English is spoken in Canada(by them). Wood was used for making tables. Computers are being made in the USA. 把被动句变否定 Computers aren’t being made in the USA. 4、They have grown rice in South China. 5. We must plant more trees next year. 6.I am going to clean our classroom tomorrow. More trees must be planted next year. Our classroom is going to be cleaned tomorrow. Rice has been grown in South China. 把被动句变疑问. Has rice been grown in South China？ 把下列句子改为被动语态。 1. They made these computers in Shenzhen. These computers ____ _____ in Shenzhen. 2. She bought a new bike yesterday. A new bike ____ ______ by her yesterday. were made was bought 3. The students clean the room every day. The room ___ ______ by the students every day. 4. He will sing a new song at the party. A new song ____ __ _____ by him at the party. 5. Students can’t take the books out of the library. The books ____ ___ _____ out of the library by students. is cleaned will be sung can’t be taken Thank you. $$