Unit 6 Section A 1a-1c课件2022-2023学年人教版九年级全一册英语

Grade 9 Unit 6 When was it invented? Section A 1a-1c Warming-up Watch the video and discuss it. paper-making 造纸术 compass 指南针 printing 印刷术 gunpowder 火 药 Leading-in Discussion Do you know What the Four Great Inventions in ancient China are? Do you know the following inventions? Presentation car Karl Benz in 1885 bulb Henry Goebel in 1854 A: What invention is this? B: It’s ... A: When was it invented? B: It was invented in ... A:Who was it invented by? B: It was invented by... was/were+过去分词 一般过去时态的被动语态 想想看：一般将来时态的构成形式是怎么样的？ will be + 过去分词 was/were+过去分词 + by + 执行者 by 意思为“被...” Tom was hit by his father yesterday. Do you know the following inventions? Presentation A: What invention is this? B: It’s ... A: When was it invented? B: It was invented in ... A:Who was it invented by? B: It was invented by... telephone Alexander Bell in 1876 camera Daguerre 1839 Practice 1a Practice I think the telephone was invented before the computer. Well, I agre