Unit 5 课时2 Section A 2a-2d（大单元教学课件）英语新教材人教版九年级上册

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. 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. 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 the file is created and 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. 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 them more and more in places like schools, in shops, in hospitals and many other places. But what is a three d 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 reads 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? 3d 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 plastics, 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 printers 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 catholic, 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 cells in these printers. 3d 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? Section A 2a-2d Unit 5 Power of Ideas Learning Objectives 通过本节课的学习，学生能够： 1. 能听懂两位同学谈论国际发明展的对话，获取对话中关于 3D 打印机及其应用领域等方面的信息（学习理解）。 2. 进一步感知并归纳含有情态动词的被动语态以及一般过去时被动语态的表达功，能与同伴问答谈论自己最喜欢的发明及其用途（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，并客观评价发明创造对人类生活的利与弊（迁移创新）。 Lead-in Watch and Answer the questions. 1.What is a 3D printer used for? It is used for making things. 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. Ask & Answer Pre- listening What things can a 3D printer make? Tick the things that you think a 3D printer can make. You can add more. 2a □ medicine  □ arms and legs  □ hearts  □ toys  □ chairs    □ tables  □ shoes   □ computers  □ houses  □ food What else?___________________________________________ clothes, cars, musical instruments, school supplies... While- listening Are you interested in 3D printing? Let’s learn more about it ! Listen to the conversation and answer the questions. 1. Where did Han Lin go last weekend? _____________________________________________________ 2. Why was the 3D printer Han Lin's favourite invention? _____________________________________________________ He went to the International Exhibition of Inventions. Because almost everything under the sun can be made by it. 2b What does “almost everything under the sun” mean? Complete the sentences with the correct forms of the words in the box. Then listen again and check your answers. designed created sent read produced be done (by) 被动语态 2c Ella: Hi, Han Lin! Did you go to the International 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 printer was amazing. Ella: Why? Han Lin: Almost everything under the sun can ________________ it. Ella: Really? Like what? Han Lin: Well, all kinds of everyday objects. Toys, chairs, tables, and even houses can all ____________ the 3D printer. Ella: That’cool! Han Lin: Yeah. And in medicine for example, arms and legs, even hearts can _______________ the 3D printer. Ella: That’s great! How does it work? Han Lin: Well, first, the object________________on a computer. Then, a file _________________ to the 3D printer. The 3D printer reads the file, and after that, the object___________________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! were shown be made by be made by be created by is designed is produced by is created and sent Post- listening List the things you use every day and choose the one that you like the most. Then talk about what it can be used for and its importance. 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 .... 2d 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. Language Points 1.The object is produced by building up plastic. 这个物体是通过堆积塑料生产出来的。(P43-2b) produce 的一词多义： (1)v. 生产；繁育；制造；产生。 be produced by 由……生产 (2)n. 农产品(尤指水果、蔬菜等) 相关词形： (1)product n. 产品；制品(指工业生产的产品) (2)producer n. 生产者；制造商；制片人 (3)production n. 生产；制作；产量 1.The object is produced by building up plastic. 这个物体是通过堆积塑料生产出来的。(P43-2b) plastic ①〔不可数名词〕塑料 这个玩具是塑料做的，所以很轻。 This toy is made of plastic,so it's verylight. ②〔形容词〕塑料的 我们应该少用塑料袋来保护环境。 We should use fewer plastic bags to protect the environment. 常用短语：plastic bag 塑料袋；plastic bottle 塑料瓶； plastic waste 塑料垃圾；plastic products 塑料制品 2.Oh, the 3D printer was amazing.(P43-2b) printer /'prɪntə(r)/ n. 打印机；印刷公司;印刷工人 相关词形： (1)print v. 打印；印刷 n. 印刷字体；印刷行业。 print out 打印出来 (2)printing n. 打印 3D printing 3D 打印 (3)printed adj. 印刷的；打印的 e.g. My dad bought a new printer for the home. 我爸爸给家里买了一台新打印机。 3.What invention do you like the most? 你最喜欢什么发明?(P4-2d) What...do 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 like...the most. →What...do you like best?答语为I like...best. 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. Exercise Ⅰ. 选词填空。 invention print file it thousand 1. The smart fridge can order food for ______ when it finds that the milk is finished. 2. The telephone is one of the most important ___________ in human history. 3. This new machine can print objects using a special kind of _________ . 4. Please put these important ___________ into the safe. 5. ___________ of tourists visit the Great Wall every year to see the ancient defense structures. itself inventions printer files Thousands Summary 分类+视频 Homework Must do: 1. 画一张3D打印机运作过程的思维导图。 Choose to do: 2. 模仿2d部分，与同伴创造新的对话。 Homework Lavf58.46.101 Lavf61.7.106 Bilibili VXCode Swarm Transcoder v1.3.42 星越教育 null 74579.055 $