Unit 6 Section B 3a-Self Check课件2024-2025学年人教版英语九年级全册

Section B (3a-Self Check) Unit 6 When was it invented? 九年级英语（RJ上） 教学课件 3a Think of something that you do not like to do. Then think of an invention that could help you. Make notes. eg. This special pen was invented by Liu Jie. It has three colors and is used for …. Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class. 3b Useful sentences: 1. I think … is a very useful invention. 2. … was invented by … 3. … was invented in … 4. It was used for … 5. … is made of ……… 【写作任务】 假如你就读于一所国际学校，酷爱发明。在你校的科技周活动中你想向同学们“推销”你的一项新发明。请根据提示准备一篇英语发言稿。 提示： 1. What's it and when was it invented? 2. What's it used for? 3. What's it like? 4. How does it work?  5. How much is it? One possible version: May I have your attention, please? I'd like to introduce my new invention to you. It is an alarm on your glasses. It was invented three months ago. It is used for finding your glasses in your home or at school. The alarm is controlled by a remote(远的) control with a button on it. First press the button, and the alarm will make a sound. Then follow the sound to look for your glasses. You must want to know how much it is. It's 20 yuan. It’s cheap and good. You can afford one. Don't you hate it when you can't find your glasses? If so, please come to me and buy one. 1 1. Someone stole my watch. 2. They used five eggs to make this big cake. 3. When did they invent the personal computer? 4. They asked us not to run in the hallway. 5. Someone took the video back to the store. 1. My watch was stolen (by someone). 2. Five eggs were used to make this big cake. 3. When was the personal computer invented? 4. We were asked not to run in the hallway (by them). 5. The video was taken back to the store (by someone). II. Rewrite these sentences using the passive voice. Invention: _________________________ When: _________________________ Who: _________________________ Purpose: _________________________ in 2013 umbrella with a light Li Meng III. Find out information about an invention you would like to know more about and write sentences below. seeing in the rain in the dark the number of… 意为“……的数量，……数目”，作主语时，谓语动词用单数形式。 例：The number of students in my class is 68. 我班的学生人数是68。 a number of…意为“许多，若干”，相当 于some。修饰可数名词复数，作主语时，谓语动词用复数形式。 例：A number of people are unhappy with this decision. 一些人对这项决定并不满意。 【链接】 hero n. 英雄；男主角。其复数形式是在 词尾加-es，即heroes。 例：He is a hero in my heart. 在我的心里他是个英雄。 Negro —Negroes (黑人） potato — potatoes (土豆） tomato —tomatoes (西红柿) 【链接】 其他常见的以e结尾变复数时加-es的单词 encourage sb. to do sth. 鼓励某人做某事 例：Parents should encourage children to do things by themselves. 父母应该鼓励孩子独立做事。 achieve one’ s dream(s) 实现某人的梦想， 相当于realize one’s dream(s）。 例：He could not achieve his dreams. 他未能实现他的梦想。 look back look down upon/ on look forward to look into look like look out look through look up look up to look over look for 【链接】 与look相关的动词词组 回头看；回顾 看不起, 轻视 盼望；期待 朝......看去; 调查 看上去像 当心，小心；留神 浏览；透过……看 查阅；抬头看 钦佩；仰慕 检查 寻找 Problem: ________________________ New invention: ____________________ What it is used for: _________________ 3a Think of something that you do not like to do. Then think of an invention that could help you. Make notes. a special pen quickly taking notes in class taking notes in class WRITING Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class. 3b This special pen was invented by Liu Jie. It has three colors and is used for … 【单元写作指导】 本单元的话题是“发明”，谈论了一些发明的历史。在写作方面，要求学生能写出一段有关介绍某项发明的文章。在介绍某项发明时，应该介绍该项发明的发明时间、构成材料、用途等。 常用句型： 1. I think … is a very useful invention. 我认为……是一项很有用的发明。 2. … was invented by … ……是由…… (某人)发明的 3. … was invented in … ……是在…… (某时间)发明的 4. It was used for … 它被用来…… 5. … is made of … ······是由……(材料)制成的 One possible version This special pen was invented by Liu Jie. It has three colors and is used for taking notes quickly in class. It was invented in 2012. It is made of plastic and steel. It can remember what the teacher said. It can also help write down the main points. I think it’s a useful invention. 中考链接 假如你发明的“飞行单车”在学校科技节中获奖，被推荐参加一个国家青少年科技展览。请用英语介绍你的发明，内容包括下图中1-4项。 (2017·广东广州) “飞行单车” 1.外观：两个轮子，两只翅膀 2.用途：行驶于地面和空中、可拍照、 能对话 3.特点：速度快、使用太阳能、环保 4.改进计划（1~2点） 注意： (1)参考词汇：轮子 wheel 太阳能 solar power (2)词数80左右(文章的开头已给出，不计入总词数) (3)不得透露学校、姓名等任何个人信息，否则不 予评分。 My invention is a flying bike… ____________________________________ ____________________________________ ____________________________________ ____________________________________ One possible version My invention is a flying bike. It is fast, convenient and green! The flying bike has two wheels and two wings. It has a top speed of 300km/h. You can go to farther places in a shorter time. It can run on land and fly in the air. If you shout “fly”, the bike will turn into a plane in 30 seconds. Then you can fly in the air. You will be as free as a bird. It can take photos, too. Instead of petrol, the bike uses solar power, so it will not pollute the air. I will add a seat at the back of it so it can carry two person. My invention will help people live a better life in the future. It is often difficult to decide on the inventor of certain inventions. This is because sometimes a few people may ______ things which are nearly the same. It’s hard to tell who came up with the idea first. invent doubt mention website all of a sudden Self Check 1 Complete the passage with the correct forms of the words in the box. invent adv. 几乎 Some inventions can also lead to other inventions _____________. So some people _____ whether the inventor came up with the idea himself or herself. They think that the inventor used someone else’s idea to create his or her invention. That is why books or _______ usually _______ more than one inventor when giving information about inventions. all of a sudden doubt websites mention invent doubt mention website all of a sudden 1. Someone stole my watch. _________________________________ 2. They used five eggs to make this big cake. ___________________________________ 3. When did they invent the personal computer? ___________________________________ 4. They asked us not to run in the hallway. __________________________________ 5. Someone took the video back to the store. __________________________________ My watch was stolen (by someone). When was the personal computer invented? Five eggs were used to make this big cake. 2 Rewrite these sentences using the passive voice. We were asked not to run in the hallway (by them). The video was taken back to the store (by someone). Invention: _________________________ When: _________________________ Who: _________________________ Purpose: _________________________ in 2013 umbrella with a light Li Meng 3 Find out information about an invention you would like to know more about and write sentences below. seeing in the rain in the dark 1. During the afternoon, there was ______ (suddenly) heavy fall of snow. 2. I think the elephone ___________ (invent) before the car. 3. The _______ (Canada) song Alouette (百灵鸟) is a fun song about a bird. 用所给单词的适当形式填空。 sudden Exercises was invented Canadian 4. They ___________ (invite) to take part in the May Day celebrations in Beijing. 5. The _________ (popular) of private cars is changing the people’s life style. 6. When the bill ___________ (bring) to him, he was so surprised. were invited popularity was brought 7. They gave their lives for their country and were honored as ________ (hero). 8. We _____________ (divide) into eight groups by our teacher last week. heroes were divided SUMMARY Learned the history of basketball. Know how to draw the mind map. Review and consolidate the Passive Voice. HOMEWORK Memorize the knowledge points. Retell the invention of basketball. Do the exercises in students’ book. $$