Unit 4 Amazing Science Topic 1 SectionB课件 2025-2026学年仁爱科普版（2012）九年级英语上册

Unit4 Amazing Science Topic1 When was it invented? SectionB 一、Master some new words and phrases：bulb, airplane, hard- wearing, It's said that..., during one's life, be used by, more than, be different from and so on. 二、Go on learning the simple past passive voice. 三、Talk about some great inventions of the inventors. Learning objectives Let's play a guessing game. Guess the inventions! You can just stand up and say out your answers. If you are right ,your group can get 3 pearls. Guess 猜一猜 It is made of plastic. It is used for communication. It is very small and you can put it in your pocket. You can also use it to call your friends, listen to music and so on. What’s this? Guess 猜一猜 It is made of metal and plastic. It was first made in America around 1975. When we travel, we usually take it with us. It is used to take photos. What’s this? It is made of metal and glass. It was made by Thomas Edison first. When the room is dark, we can use it to make the room bright. What is this? Do you know more inventions? Guess 猜一猜 Listen to 1a and choose the correct answers. ( ) 1. Where are Michael and Jane? A. In the science museum. B. At the school library. C. In the zoo. D. In the park. ( ) 2. Which object is not mentioned in the conversation? A. Light bulb. B. Airplane. C. Television. D. Radio. 1b A C Read 1a and complete the table. Year light bulb radio airplane Thomas Edison Wilbur and Orville Wright 1879 1895 1903 Guglielmo Marconi 发明物 发明者 Invention Inventor Example: A: Who invented the light bulb? B: It was invented by Thomas Edison. A: Do you know when it was invented? B: It was invented in 1879. 造纸术 印刷术 指南针 Cai Lun Bi Sheng Ancient Chinese Paper-making Printing Compass Eastern Han Dynasty Song Dynasty Song Dynasty Pair work Ask and answer questions similar to the example. Read 1a freely and retell it. Michael: Look, a light bulb! Jane: Yeah. it is ______________ people everywhere. Do you know when it ______________? Michael: It was invented in 1879. Jane: Who _________ it? Michael: Thomas Edison. ___________ he invented ___________two thousand things _______ his life. Jane: What about the radio? Michael: The radio ________________ Guglielmo Marconi in 1895. Jane, let's go this way. Look! An airplane, but it's ______________ today's. Jane: Yes. It ________________ Wilbur and Orville Wright in 1903. widely used by was invented invented It's said that more than during was invented by different from was invented by be used by It's said that more than during one's life be different from Complete the sentences with the correct forms of the given phrases. 1.She has ______________20 good friends. 2.The dinosaur_______________the dragon. 3._____________she will leave for Xinyang next week. 4.The computer____________my sister yesterday. 5.He had three children_____________. more than is different from It's said that was used by during his life Read and act 1a out（表演对话） Michael: Look, a light bulb! Jane: Yeah. It is widely used by people everywhere. Do you know when it was invented? Michael: It was invented in 1879. Jane: Who invented it? Michael: Thomas Edison. It's said that he invented more than two thousand things during his life. Jane: What about the radio? Michael: The radio was invented by Guglielmo Marconi in 1895. Jane, let's go this way. Look! An airplane, but it's different from today's. Jane: Yes. It was invented by Wilbur and Orville Wright in 1903. jeans Inventions in Dressing. Fill in the blanks with the proper forms of the given words. 2 The first jeans were produced in 1855. At that time, they _____________ (not call) jeans and they were just hard-wearing pants designed for workers. The pants _____________ (make ) of brown cloth. This kind of cloth ______ usually _____(use) for making tents. Nowadays, their materials have been changed so that it feels more comfortable. And many different jeans styles _____ also ________(create). They ______________( design) not only for workers but also for teenagers and women. Later , jeans are popular all over the world. were not called were made was used are created are designed 耐穿 Listen to the three passages. Match the pictures with the following information. 3 A. Karl Benz C. Alexander Graham Bell B. John Baird Invention Inventor Year a.1926 b.1876 c.1885 /kɑrl bɛnz/ 卡尔本茨 /dʒɑːn bɛrd/ 约翰·贝尔德 /ˌælɪɡˈzændər ˈɡreɪəm bel/ 亚历山大·格雷厄姆·贝尔 Summary We learn: 1. Some words: bulb, airplane, hard-wearing 2.Some phrases: It's said that, during one's life 3.Some sentences: It’s said that he invented more than two thousand things during his life. We can: 1.Use the simple past passive voice: Do you know when it was invented? It was invented in 1879. 2.Talk about the inventors of some great inventions. I notice small surprises around me. 我留意身边的小意外。 Never stop thinking of new ways. 永远不停止想方法。 Very hard I try,even when I fail. 即使失败，我也努力尝试。 Eager to share my ideas with others. 渴望把我的想法分享给别人。 Now I know: I can be an inventor! 现在我知道：我也能成为发明家。 Today's small"oops" is tomorrow's great thing! 今天的小“意外”，就是明天的好发明。 Turn surprises into inventions. We're all little inventors! 44747.414 74370.055 $