Unit 5 Section A 2a-2d 课件 2026-2027学年人教版英语九年级上册

Today, I want to introduce three d printing to you. Three d printing is a new type of additive manufacturing technology. Different from traditional cutting and grinding processing methods, IT can turn virtual design drawings into real physical objects by stacking materials such as plastic, metal, and resume layer by layer according to computer designed models with simple Operation and fast forming. This technology breaks many limitations of traditional manufacturing. IT can print everything from small daily ornaments and stationary to large industrial parts, architectural models, and even customized prosthetics in the medical field. IT not only reduces the research and development and production costs of products, but also realizes personalized customization, making the production of complex structures easier. 3d printing is widely used in many fields such as industry，medical care and education, which promotes the innovation of manufacturing methods, improves production ency, and brings new possibilities for the development of various industries. Yeah, and in medicine, for example, arms and legs and even hearts can be created by the three d printer. That's great. How does that work? Well, first, the object is designed on a computer. Then a fire is created in cent of the three d printer. The three d printer reads the file, and after that, the object is produced by building . up plastic. Is only plastic used? No other materials can also be used to produce things. IT can even make food. Oh. really, i'd love to try three d printed food. Section a activity to b. Listen to the conversation and answer the questions. Hi, harlem. Did you go to the international exhibition of inventions last weekend? Yes, some amazing inventions were shown from all over the world. What invention did you like . the most? Oh, the three d printer was . amazing. Why almost . everything under the sun . can be made by IT really like, why? Well, all kinds of everyday objects, toys, chairs, tables and even houses, can all be made by the three d printer. That's cool. yeah. And in . medicine, for example, arms and legs and even hearts can be created by the three d printer. That's great. How does that work? Well, first. the object is designed on a computer. Then a file is created in cent of the three d printer. The three printer reads the file, and after that, the object is produced by building up plastic. It's only plastic used. No other materials can also be used to produce things. IT can even make food. Oh. really, i'd love to try three d printed food. Hi HEllen. Did you go to the international exhibition of inventions last weekend? Some amazing inventions were shown from all over the world. What invention did you like the most? Oh, the 3d printer was amazing。Why almost . everything under the sun can be made by IT? Really like what? Well. all kinds of everyday objects, toys, chairs, tables and even houses, can all be made by the three . d printer. That's cool. yeah. And in medicine, for example, arms and legs and even hearts can be created by the three . d printer. That's great. How does that work? Well, first, the object is designed on a computer. Then a file is created, sent to the three d printer. The three d printer reads the file, and after that, the object is produced by building up plastic. Is only plastic used. no other materials can also be used to produce things. I can even make food. Oh, really, i'd love to try three deep printed food. Presentation Unit5 Power of Ideas Section A What changes can inventions bring to our lives? (2a-2d) 听说课公开课 单元主题范畴:人与社会 单元主题内容:科技与发明,科技发展对人类社会的影响 (2024新版)人教版 九年级(上册) Presentation Learning Objectives 1.通过听读对话,获取3D打印的工作流程以及收音机的发明者、发明时间和历史影响等关键信息,理解被动语态在描述发明创造时的形式和意义。(学习理解) 2.在听力、对话练习中,提取新型发明的功能、来源、工作流程的关键信息;能围绕 “发明” 开展问答、双人讨论,清晰描述发明的用途、工作方式,分析发明给生活带来的改变。(学习理解,应用实践) 3.能讨论 3D 打印等新发明给未来生活、医疗和社会带来的便利与潜在问题,能大胆想象未来还能用 3D 打印创造什么;选择一项自己认为最重要的发明,从多方面进行介绍并阐述理由,表达个人观点,感受发明对生活的影响和发明家的创新精神。(迁移创新) Presentation Look and say Look at the picture and answer the questions. We need a small model for the expo, but the box is empty. Can a computer “print” an object? Presentation Watch and say what is this invention ? 3D printer / pr nt (r)/ n. 打印机;印刷机 Presentation Watch and answer Watch another video and answer the questions. 1.What is a 3D printer used for? 2.How does it work? First, you draw the thing you want to make on a computer. The computer then creates a special kind of file and sends it to the 3D printer.Finally, the 3D printer reads that file and prints the object layer by layer. It is used for making things. What things can a 3D printer make? Presentation Watch and say Tick the things that you think a 3D printer can make. You can add more. 2a medicine arms and legs hearts toys tables shoes computers houses chairs food pens toy cars models artwork I think hearts can be made by a 3D printer. In my opinion, shoes can also be produced by it. I don’t think medicine can be made by a 3D printer. Almost everything can be made by 3D printer. Are you interested in 3D printing? Let’s learn more about it. Presentation Listen and choose Listen to the conversation and choose right answe. 2b 1.Where did Han Lin go last weekend? A. To a science museum. B. To the International Exhibition of Inventions. C. To a 3D printing shop. 2. Why was the 3D printer Han Lin’s favourite invention? A. Because almost everything under the sun can be made by it. B. Because it can make all kinds of paintings. C. Because it was cheap and easy to use. 天底下,世间 What does “almost everything under the sun” mean? Presentation Complete and listen Complete the sentences with the correct forms of the words in the box. Then listen again and check your answers. 2c read design produce create send /pr dju s/ v. 生产;繁育 /fa l/ n.(计算机的)文件;文件夹 / pl st k/ n. 塑料 adj. 塑料的 Read through the sentences and predict the answers before listening. designed created sent read produced be done : passive voice. Presentation Watch and learn 1. 对应关系:英语被动语态对应中文的“被字句”,主动语态对应“把字句”。 2. 基本结构: be + 动词过去分词 ,表示“被……”。 3. 补充说明:若要引出动作的执行者,需在句末用介词 by + 人物 ,且 by 后接宾格形式。 被动语态 The classroom is cleaned by Li Hua every day. 教室每天由李华打扫。 This letter was written by my sister yesterday. 这封信是我姐姐昨天写的。 Presentation Listen and fill Listen again and fill in the blanks. Ella: Hi, Han Lin! Did you go to the Exhibition of inventions last weekend? Han Lin: Yes, some amazing inventions from all over the world. Ella: What invention did you like the most? Han Lin: Oh, the 3D was amazing. Ella: Why? Han Lin: Almost everything can be made by it. Ella: Really? Like what? Han Lin: Well, all kinds of . Toys, chairs, tables, and even houses can all be made by the 3D printer. Ella: That’s cool! Han Lin: Yeah. And in , for example, arms and legs, and even hearts can by the 3D printer. Ella: That’s great! How does it work? Han Lin: Well, first, the object on a computer. Then, a file and sent to the 3D printer. The 3D printer , and after that, the object is produced by . Ella: Is only plastic used? Han Lin: No, other can also be used to things. It can even make food. Ella: Oh, really? I’d love to try 3D‑printed food International were shown printer under the sun everyday objects medicine be created is designed is created building up plastic reads the file materials produce 国际的 被展示 打印机 世间;世上 日常物品 医疗 被制造 被设计 被制造 叠加塑料 读取文件 材料 生产 Presentation Listen and say Listen again and repeat , then find the Passive Voice. Ella: Hi, Han Lin! Did you go to the International Exhibition of Inventions last weekend? Han Lin: Yes, some amazing inventions were shown from all over the world. Ella: What invention did you like the most? Han Lin: Oh, the 3D printer was amazing. Ella: Why? Han Lin: Almost everything under the sun can be made by it. Ella: Really? Like what? Han Lin: Well, all kinds of everyday objects. Toys, chairs, tables, and even houses can all be made by the 3D printer. Ella: That’s cool! 被动语态: be done 全世界 各种各样的 日常物品 Presentation Listen and say Han Lin: Yeah. And in medicine for example, arms and legs, even hearts can be created by the 3D printer. Ella: That’s great! How does it work? Han Lin: Well, first, the object is designed on a computer. Then, a file is created and sent to the 3D printer. The 3D printer reads the file, and after that, the object is produced by building up plastic. Ella: Is only plastic used? Han Lin: No, other material can also be used to produce things. It can even make food. Ella: Oh, really? I’d love to try 3D-printed food! Listen again and repeat , then find the Passive Voice. Han Lin: Yeah. And in medicine for example, arms and legs, even hearts can be created by the 3D printer. Ella: That’s great! How does it work? Han Lin: Well, first, the object is designed on a computer. Then, a file is created and sent to the 3D printer. The 3D printer reads the file, and after that, the object is produced by building up plastic. Ella: Is only plastic used? Han Lin: No, other material can also be used to produce things. It can even make food. Ella: Oh, really? I’d love to try 3D-printed food! 被动语态: be done 堆积,堆叠 Presentation Read and answer How to introduce the 3D printer? Ella: Hi, Han Lin! Did you go to the International Exhibition of Inventions last weekend? Han Lin: Yes, some amazing inventions were shown from all over the world. Ella: What invention did you like the most? Han Lin: Oh, the 3D printer was amazing. Ella: Why? Han Lin: Almost everything under the sun can be made by it. Ella: Really? Like what? Han Lin: Well, all kinds of everyday objects. Toys, chairs, tables, and even houses can all be made by the 3D printer. Ella: That’s cool! Han Lin: Yeah. And in medicine, for example, arms and legs, and even hearts can be created by the 3D printer. Ella: That’s great! How does it work? Han Lin: Well, first, the object is designed on a computer. Then, a file is created and sent to the 3D printer. The 3D printer reads the file, and after that, the object is produced by building up plastic. Ella: Is only plastic used? Han Lin: No, other materials can also be used to produce things. It can even make food. Ella: Oh, really? I’d love to try 3D-printed food! Basic introduction Main features How it works Presentation Watch and imitate Presentation Look and introduce Introduce the 3D printer to visitors using the table below. Part Useful sentences Greeting *Welcome to our exhibition area. * Let me show you something amazing! Basic introduction This fantastic invention right here is the 3D printer. Main features Almost everything under the sun can be made by it, such as toys,chairs Many different materials can be used for printing, like plastic and metal. How it works First, After that, … Later, … Finally, Conclusion It’s really changing our world! Presentation Look and say What invention do you like the most? There are so many great inventions in our daily lives. Presentation List and talk List the things you use every day and choose one that is the most useful for your life. Then talk about what it looks like and what it is used for with a partner. 2d A: What invention do you like the most? B: I like the most. A: What can it used for? B: It can used for/to A: Amazing!/Fantastic! Is it important in your daily life? B: Yes, it Presentation List and talk List the things you use every day and choose one that is the most useful for your life. Then talk about what it looks like and what it is used for with a partner. 2d Example: A: What invention do you like the most? B: I like the most. A: What can it be used for? B: It can be used for A: Amazing! Is it important in your daily life? B: Yes, it is. It . smartphone communicating with friends, taking photos, surfing the Internet and so on. makes our life more convenient 方便的 Presentation List and talk List the things you use every day and choose one that is the most useful for your life. Then talk about what it looks like and what it is used for with a partner. 2d Example: A: What invention do you like the most? B: I like the most. A: What can it be used for? B: It can be used to A: Amazing! Is it important in your daily life? B: Yes, it is. It . the desk do my homework and put my books and laptop on. is very helpful for my study. Presentation List and talk List the things you use every day and choose one that is the most useful for your life. Then talk about what it looks like and what it is used for with a partner. 2d Example: A: What invention do you like the most? B: I like the laptop the most. A: What can it be used for? B: It can be used for studying and searching for information. It can also be used to watch videos. A: Amazing! Is it important in your daily life? B: Yes, it is. It helps me finish my school work quickly. Presentation Watch and say Presentation Watch and say Group Work: Name of invention What it looks like What it is made of What it is used for How it helps people Our invention is called … It looks like … It is made of … It can be used for … It will help people by … Presentation Think and say Think & Discuss If I have a 3D printer, I will If I have a 3D printer,I will print a pair of shoes because I can design my own style. If I have a 3D printer,I will print food because it is fun and convenient. If I have a 3D printer,I will print a heart to help sick people. Presentation Look and say Great ideas become inventions.Great inventions can bring great changes to our lives and make life better. Almost everything under the sun can be made by the 3D printer. The 3D printer is really amazing. Deep Thinking Presentation Look and say Inventions make our life better. Keep thinking; every small idea can be a great invention. 发明让我们的生活更美好。保持思考,每一个小小的想法都可以成为一项伟大的发明。 Presentation Look and summarize Presentation Language points 1.Finally, the object is produced by building up plastic. 最后,物体通过堆叠塑料的方式被生产出来。 ① produce /pr dju s/ v. 生产;繁育 ② product n. 产品;制品 production n. 生产;产量;produce n. 农产品[不可数名词] 我们以生产高质量的产品而自豪。 high-quality products. 一只成年猫一年可能生三窝小猫。 three times a year. We pride ourselves on producing An adult cat may produce kittens Presentation Language points 2.Why was the 3D printer Han Lin's favourite invention? 为什么3D打印机是韩林最喜欢的发明? ① printer / pr nt (r)/ n. 打印机;印刷公司 ② print v. 打印;印刷 printer n. 还可指“印刷工人;印刷商” 这种打印机被广泛用于学校和办公室。 in schools and offices. 我们昨天把文件发给打印机了。 yesterday. This kind of printer is widely used We sent the files to the printer Presentation Language points 3. What invention do you like the most? 你最喜欢什么发明?(P4-2d) Whatdo you like the most? 你最喜欢什么……? =What.…do you like best? What..do you like the most?答语为I likethe most. Whatdo you like best?答语为I likebest. 你最喜欢什么科目? What subject do you like the most? =What subject do you like best? 我最喜欢英语。 I like English the most.=I like English best. Presentation Class test At the International Exhibition of Inventions, two great inventions are introduced to visitors. The first one is Super See from Germany. It looks like a pair of sunglasses. It 1. (make) for people with poor eyesight. A mini-camera 2. (connect) to its front. Words on books can 3. (turn) into sound, so it helps users read and watch TV easily. The second invention is Smart Cook 4 China. People need to put food into the machine and press the button first. After that, the food 4. (cut) and fried by the machine. Oil and salt 5. (add) automatically. There are many recipes in its app, 6. it can cook hundreds of dishes. Besides these two inventions, the 3D printer is also popular. Different daily objects 7. (produce) with plastic or other materials. Many medical parts can be made, 8. (include) man-made hearts. Creative ideas can always change our life 9. a better way. 语法填空: is made is connected be turned are added is cut so are produced including in Presentation Must-do Write one sentence in the passive voice for each of the six inventions (plane, camera, laptop, mobile phone, TV, high‑speed train). Example: The mobile phone was invented to help people communicate. Optional Choose your favourite everyday invention and record a 1‑minute English video promoting it. Describe what it looks like, what it is used for, and how it changes your life. Share it in the class WeChat group $The international exhibition of inventions doesn't have enough inventions. Can you help create some new ones for the show? 英语中有两种语态，一个是主动语态，一个是被动语态。这样专业的术语大家可能不太好理解。其实说白了，这两个语态就是对应到中文中的把字句和被字句。比如说我吃这个鸡蛋，其实就是中文中的把字句，我把这个鸡蛋吃了，这种形式就叫主动语态。主动语态就是把字句，那被动语态说白了其实就是被字句。应该怎么说呢？倒过来说鸡蛋被我吃了，那被吃在英语中怎么表述呢？英语中用的是be动词加上这个动词过去分词的形式，这个结构放在一起就表示被，怎么样表被动？所以这里的被吃就是is加上is的过去分词eaten就从主动变成被动。但是大家会发现这样变过来之后，鸡蛋被我吃了，这个我为什么没说出来呢？这时候要注意了，英语的被动语态里面，如果你想把做这件事的这个人也表达出来的话，应该放在最后，不能直接说通过介词代表方式把人物加上by是个介词，后面接宾格，所以这里加上by me就把这句话完全的信息说出来了。英语被动语态要注意的核心就两个点。第一就是被迫怎么表达，叫be加过去分词。第二就是用介词by引出做这个事的人。就这两个核心，记住就能学会英语的两大仪态。 Hi, hand lem. Did you go to the international exhibition of inventions last weekend? Yes, some amazing inventions were shown from all over the world. What invention did you . like the most? Oh, the three printer was . amazing. Why almost . everything under the sun . can be made by IT really like why? Well, all kinds of everyday objects, toys, chairs, tables and even houses, can all be made by the three d printer. S, Q. Section a activity to see, complete the sentences with the correct forms of the words in the box. Then listen again and check your answers. Hi harley. Did you go to the international exhibition of inventions last weekend? Yes, some amazing inventions were shown from all over the world. What invention did you like the most? Oh, the three printer was amazing. Why almost . everything . under the sun can be made by IT? Really like? why? Well. all kinds of everyday objects, toys, chess tables and even houses can all be made by the . 3d printer。That's cool. yes. And in medicine, for example, arms and legs and even hearts can be created by the 3d printer。That's great. How does that work? Well, first, the object is designed on a computer. Then a fire is created in cent of the three d printer. The three d printer reads the file, and after that, the object is produced by building . up plastic. Is only plastic used? No other materials can also be used to produce things. IT can even make food. Oh. really, i'd love to try three d printed food. How would you like to have a machine that could make anything you want? IT sounds good, doesn't IT. Well, this is now possible through the magic of 3d printers。And while you might not yet see a three d printer sitting alongside your toaster or your TV at home, you will start to see the more and more in places like schools, in shops, in hospitals and many other places. But what is a fredy printer? And how does three d printing allow us to make almost anything from nothing? 3d printing is one type of additive manufacturing，and IT involves making an object by adding material one tiny layer at a time. So how do you do that? Well, IT all starts by making a drawing of the thing you want on your computer. The computer then makes a special kind of file, which IT sends to the 3d printer。And the 3d printer read that file and prince the object layer by layer to make the thing you want。That sounds interesting, but why would you want to do that? Three d printing can help people to make new shapes and new objects that were not previously possible, and all sorts of different materials can be used like plastic, CS, or metals, or food, or even even living cells that your body is made of. So who uses three d printers? Who cares about this? Engineers are using three d printers to make parts of jet engines that are lighter and stronger, to make airplanes more efficient, to use less fuel. Doctors are using three d printing ce to make new hands and arms and legs that are perfectly fitted for the patients who need them. Even shifts are experimenting to make amazing new types of food that you just couldn't even imagine. And hospitals are using three d printers to make new body parts for people such as new bones, to repair really bad fractures, perhaps to the face or to the hand. And even using three d printers to make ject from catered, the thing that your ear is made of to make new ears. For people who may have had a bad accident one day, we may even be able to 3d print new organs inside your body，like kidneys or livers, using the patient's own sales in these printers. Three d printing is already changing the way we make stuff. And who knows what amazing things that you could make with a three d printer in the future?