Unit 7 Section 4课件 2025-2026学年沪教版八年级英语下册

该初中英语课件围绕中国空间站（天宫）及北斗卫星导航系统（BDS）展开，通过Brainstorming问题（太空日出次数）激发兴趣，Pre-reading预测（建造原因等）和词汇预习搭建支架，引导学生从整体到细节理解文本，构建知识脉络。 其亮点在于融合文化意识与思维品质，通过任务型阅读（如匹配段落大意、分析时间顺序）培养信息处理能力，跨学科链接通讯技术（BDS工作原理）拓展视野。文化背景融入中国航天成就（天宫、北斗发展），增强家国情怀。学生提升语言能力与文化自信，教师获得结构化资源，便于实施探究式教学。

Unit 7 Space exploration 沪教牛津版八年级下册 What do you know about the development of China’s space station? Key question 主题范畴： 人与自然；人与社会 Section 4 Brainstorming How many times can we see the sun rise in one day on Earth? Lead-in Tiangong space station Astronauts can see the sun rise 16 times in one day in space. Let’s read the article to find out the reason. Why was it built? What are its main parts? When was it built / launched? Who works there? What do they do? What’s special or interesting about it? Before you read, discuss what you think you will learn about Tiangong from the article. 🚀 🚀 🚀 🚀 🚀 Pre-reading Let’s predict! China’s first-ever spacewalk was about 20 minutes long and was performed by Zhai Zhigang in 2008. On 4 July 2021, the first spacewalk outside the Tiangong space station was performed by Liu Boming and Tang Hongbo. Their spacewalk lasted 6 hours and 46 minutes. Notes 中国首次太空行走时长约20分钟，由翟志刚于2008年完成。2021年7月4日，天宫空间站外的首次太空行走由刘伯明和汤洪波完成，他们的太空行走持续了6小时46分钟。 v. 传送；运载 n. 燃料 n. 供应量；供给量 n. 时刻；阶段 n. 实验室 肉眼 deliver /dɪ'lɪvə(r)/ *fuel /'fjuːəl/ supply /sə'plaɪ/ point /pɔɪnt/ lab /læb/ naked eye Pre-reading New words and phrases Fast reading Tiangong: China’s space station Chinese people have long dreamt of exploring space. In 2022, China finished building a space station called Tiangong (“Heavenly Palace”). The name comes from ancient Chinese legends about the sky. The most important part of Tiangong space station is called Tianhe (“Harmony of Heavens”). It was sent into space on 29 April 2021. Just a few weeks after it arrived at its destination, Tianhe got its first visitor—the Tianzhou-2 spacecraft. The spacecraft delivered fuel, equipment, tools and supplies for the astronauts. At this point, the space station was ready to receive human visitors. Seven weeks later, the first three astronauts arrived at Tianhe on Shenzhou-12. The crew spent three months testing equipment and preparing it for future astronauts. Since then, several more Shenzhou crews have visited Tiangong, and two more lab modules (Wentian and Mengtian) have been added. Astronauts on space missions are always very busy. They need to do important experiments and collect scientific data. But it is definitely an amazing experience. The astronauts get to go on spacewalks, and they can see the sun rise 16 times in one day because Tiangong travels at about 28,000 kilometres an hour. That means it only takes about 90 minutes to go around the Earth! At a height of about 400 kilometres above the Earth, Tiangong passes across the sky. We do not need any special tools to see it: the space station can be seen from most parts of the world with the naked eye. If you know when and where to look, you will see a tiny shiny object moving across the night sky. Task1 Match the main idea for each paragraph Para. 1 Para. 2 Para. 3 Para. 4 Introduction to Tiangong space station and its name origin Key development stages of Tiangong, including Tianhe module and astronauts’ missions Astronauts’ tasks and amazing experiences on Tiangong Seeing Tiangong from the Earth on 29 April 2021: Tianhe was sent into space just a few weeks after: Tianhe got its first visitor—Tianzhou-2 seven weeks later: the first three astronauts arrived on Shenzhou-12 since then: several more Shenzhou crews have visited Task 2 In what order does the writer present the information in Para.2? Time order. 中国空间站“天宫”的命名极具文化深意，它源于中国古代神话传说，体现了中国人对宇宙浪漫且富有诗意的想象，将传统文化与现代航天科技完美融合，同时也表明中国空间站将是一个长期、安全、稳定运行且宜居的“太空家园”。 天宫空间站由天和核心舱、问天实验舱、梦天实验舱三个基本舱段组成，它们不仅代表着中国航天工程的巨大成就，更反映出中国在航天领域从追赶者到引领者的转变。 文化背景 Careful-reading Chinese people have long dreamt of exploring space. In 2022, China finished building a space station called Tiangong (“Heavenly Palace”). The name comes from ancient Chinese legends about the sky. Read para.1 and answer the following questions. 1.What long-term dream have Chinese people had? 2.When did China finish building the Tiangong space station? 3.What does “Tiangong” mean in English, and what is its origin? Chinese people’s long-term dream is exploring space. In 2022. It means “Heavenly Palace”, and it is from ancient Chinese… dream of doing sth 梦想做某事 The most important part of Tiangong space station is called Tianhe (“Harmony of Heavens”). It was sent into space on 29 April 2021. Just a few weeks after it arrived at its destination, Tianhe got its first visitor—the Tianzhou-2 spacecraft. The spacecraft delivered fuel, equipment, tools and supplies for the astronauts. At this point, the space station was ready to receive human visitors. Seven weeks later, the first three astronauts arrived at Tianhe on Shenzhou-12. The crew spent three months testing equipment and preparing it for future astronauts. Since then, several more Shenzhou crews have visited Tiangong, and two more lab modules (Wentian and Mengtian) have been added. Read para.2 and answer the following questions. 1.Why was Tianhe ready to receive human visitors after Tianzhou-2’s visit? 2. How long did the first three astronauts stay in Tianhe, and what did they do there? Because the Tianzhou-2 spacecraft delivered fuel, equipment, tools and supplies… They stayed there for three months. They tested equipment and prepared it for future astronauts. be ready to do sth准备好做…… since then从那以后(用现在完成时) deliver sth for…为……运送某物 Astronauts on space missions are always very busy. They need to do important experiments and collect scientific data. But it is definitely an amazing experience. The astronauts get to go on spacewalks, and they can see the sun rise 16 times in one day because Tiangong travels at about 28,000 kilometres an hour. That means it only takes about 90 minutes to go around the Earth! Read para.3 and answer the following questions. 1.What are astronauts busy with when they visit the space station? 2. Why can astronauts see the sun rise 16 times in one day? They need to do important experiments and collect scientific data. Because Tiangong travels at about 28,000 kilometres an hour and it only takes about 90 minutes to go around the Earth. 科学数据 At a height of about 400 kilometres above the Earth, Tiangong passes across the sky. We do not need any special tools to see it: the space station can be seen from most parts of the world with the naked eye. If you know when and where to look, you will see a tiny shiny object moving across the night sky. Read para.4 and answer the following question. 1. Why do you think it can be seen with naked eyes, while other man-made objects in space can’t? It’s bright enough. Its large solar panels(太阳能板) and metal surface reflect sunlight like mirrors. 在……的高度 Complete the sentences with the words and the phrase below. Change the form if necessary. deliver lab naked eye point supply (1) If you know where to look, you can see Mars with the ___________ at certain times of year. (2) Astronauts need a steady ___________ of oxygen to survive in space. (3) Scientists often do their experiments in a ___________. (4) Cargo spaceships regularly ___________ food and other things to the astronauts on the space station. (5) At some ___________ in the future, human beings will visit Mars. naked eye supply lab deliver points At this point, the space station was ready to receive human visitors. 此时，空间站已准备好迎接人类访客。Para.2 at this point “此时”。其中point作名词，意为“时刻；阶段” Language points 词性及词义 常见搭配 举例 n. 要点； 重点 the main point要点 The main point of his talk is about China's space station. 他演讲的重点是关于中国空间站的。 n. 观点；见解 make a point表明观点 take one's point赞同某人的看法 She made several interesting points in the article. 她在文章中提出了几个有趣的观点。 n. 分数；得分 get a point得1分 full points满分 Our team got three points in the game. 我们队在比赛中得了3分。 v. 指；指向 point to指向 point out 指出 The teacher pointed out my mistake. 老师指出了我的错误。 Since then , several more Shenzhou crews have visited Tiangong, and two more lab modules (Wentian and Mengtian) have been added. 从那以后，又有几批神舟乘组人员访问了天宫，也加装上了另外两个实验舱（问天和梦天）。Para.2 比较项 含义及用法 举例 since then 意为“从那以后”，表示从过去某一时间点延续至说话时，强调到目前为止一直进行的动作或者保持的状态，常用于完成时态 He has written more than 10 books since then. 从那以后，他写了十多本书。 from then on 意为“从那时起”，常用于过去时态 From then on he never spoke to me. 从那时起，他未跟我说过话。 Practice makes perfect! Cross-curricular connection Communication technologies 跨学科链接 通讯技术 Do you ever go on road trips with your family? How do you find your way? Do you use any map apps? How does the app help you find your way to the destination? The app shows us where we are. It gives us the fastest way to get to the destination, and it also tells us where to drive and when to turn. The app also shows us traffic in real time. How does the app know where you are? It uses signals from satellites in space. Discuss in pairs. Pre-reading 北斗卫星导航系统历经北斗一号(2000年底建成，服务国内)北斗二号(2012年底建成，覆盖亚太地区，性能提升)、北斗三号(2020年底全面建成，向全球提供服务)三个阶段发展而来。系统由空间段(卫星)地面段(地面控制站等)、用户段(各类终端设备)构成，为全球用户提供高精度的可靠服务。 文化背景 n. 导航 n. 卫星 adv. 自动地 n. 准确（性） 无线电信号 双向通信 navigation /ˌnævɪˈɡeɪʃn/ satellite /ˈsætəlaɪt/ automatically/ˌɔːtəˈmætɪkli/ accuracy/ˈækjərəsi/ radio signals two-way communication Pre-reading New words and phrases How BDS works What is BDS? BDS, officially known as the BeiDou Navigation Satellite System, is one of the global navigation satellite systems. How does BDS work? BDS is a group of satellites in orbit around the Earth. Each satellite sends radio signals to the Earth with information. The signals answer two important questions: “Where in space is the satellite?” and “When did the signal leave the satellite?” The radio signal travels through space at the speed of light—that is 299,792 kilometres a second! Back here on Earth, your phone receives the signal and compares it to the exact time of arrival. The phone then calculates how far it is from the satellite. Reading One satellite is not enough. Your phone needs information from four satellites to calculate your location. It does this all the time. So, when we use a BDS device, we won’t get lost. What’s special about BDS? We can also use BDS for two-way communication. In areas without any mobile network, people can send text messages through BeiDou satellites. How do we use BDS? If your phone supports BDS, it will automatically pick the navigation system with the best signal at the time. Can we use BDS outside China? Yes, we can use BDS outside China, but its accuracy is higher in China and the Asia-Pacific region. BDS = BeiDou Navigation Satellite System It is a Global Navigation Satellite System (GNSS). It helps us find our location anywhere on Earth. Read the definition. What does “BDS” stand for, and what is it? What is it used for? What is BDS? Where are the BDS satellites? 2. What do the satellites send to the Earth? 3. How can we receive the BDS signals? 4. How many satellites does your phone need to calculate your location? They are in orbit around the Earth. Radio signals with information about their location and time. We can receive the signals with a phone or other device that supports BDS. Four. Look at the text and answer the questions. How does BDS work? 1. What is special about BDS? We can use BDS for two-way communication. In areas without any mobile network, GPS only allows you to receive signals, but people can both receive and send text messages through Beidou satellites. The special features of BDS Example: The engine on a ship breaks down when a fisherman is out at sea. There is no mobile network, and the ship’s radio doesn’t work. With GPS, the fisherman can only get his location, but he cannot communicate. If he has a special BDS device, he can send an SOS message with his location. He can also receive messages with the BDS device. 2. In what situations might this feature be useful? In groups, discuss how BDS helps these people. Farmers Taxi drivers / Delivery drivers Scientists Pilots / Sailors You (Walking, biking, finding friends, …) Choose one or two of the groups above. How does BDS help them? How can BDS help you? Share your ideas with the class. Post-reading A timeline: the development of BDS Time Event 2000 The BDS-1 (experiment) system was completed around 2000 and began providing limited regional navigation services in China. 2012 The BDS-2 system was completed in 2012 and began providing regional navigation services in the Asia-Pacific region. 2020 The BDS-3 system was completed in 2020 when its final satellite was launched. Its navigation services became available all over the world. Now BDS is used by millions of people worldwide for navigation, timing, and many other services. THANKS 31 Blues 160033.92 Blues 132158.55 $