Unit4 Topic3 SectionC （趣味课堂课件）英语仁爱科普版九年级上册

nullnullnullnullnullnullnullnull Unit4 Amazing Science Section C Topic 3 China is the third nation that sent a person into space. 1 Learning aims I、Master the new words and phrases： doubt, tiny, inside, brain, cancel, connect, no doubt, for instance... II、Be able to talk about the importance of computers. III、Be able to write a composition by using our imagination. 2 Review ( ) 1. Thanks for _____ me to your birthday party. A. invite B. invitation C. invites D. inviting ( ) 2. —Liu Hua studies hard at English recently. —Yes. He’s made up his mind _____ his English. A. improve B. improved C. improving D. to improve 3. It’s important __________ (master) computer technology. 4. So I advise you __________ (discover) new ways __________ (make) computers serve us better. 5. We need four more people to finish the work. （改为同义句） We need ______ ______ people to finish the work. D D to master to discover to make another four 3 Review Complete the passage with that, which or who. Have you seen the film _________ is called Kungfu Panda? This film mainly tells us a story __________ happened in ancient China. One of the main characters in it is a panda _________ is very fat but cute. He has quite a few friends _________ helped him struggle to bring peace back to the land. Many people _________ have seen the film like it very much. that/which that/which that/which that/who that/who 4 Pre-reading 5 New words /,entə'teɪnmənt/ n. 娱乐；招待 entertainment doubt no doubt tiny inside /daʊt/ n./v. 怀疑，疑惑 无疑地 /'taɪnɪ/ adj. 极小的，微小的 /,ɪn'saɪd/ prep. 在......里 adv. 在里面 6 cancel /ˈnɔ:məli/ adv. 通常， 正常情况下 /breɪn/ n. 脑；智力；脑力 normally brain workplace /ˈkænsl/ v. 取消，撤销；废止 /ˈwɜ:kpleɪs/ n. 工作场所 7 properly /kəˈnekt/ v. 连接； 把......联系起来 /bɪˈsaɪdz/ adv. 而且，再说 prep. 除......之外（还） connect for instance besides 例如 = for example /ˈprɒpəli/ adv. 正确地，恰当地 8 While-reading 9 What are the computers used for? 10 1. Tick the fields we use the computer in. 1a education business industry communication daily life medical care entertainment sports 11 2. Can you give an example of the use of the computer in one of the fields above? 1a In factories ? In space ? In business ? In the hospital ? 12 1. Underline the topic sentence of each paragraph. 1b Fast reading Para 1: Para 2: Para 3: Since computers were invented in the USA in the 1950s, they have become very important in many areas of work and leisure. Since the Internet came into being, people’s lives at home have been changed, too. Computers have improved our lives, but they have brought problems, too. 13 1b 2. Complete the following diagram. computers usage problem work daily life ______________________________ of a spaceship. help doctors ______________________. ____________________ in factories. help businessmen ________________________. get headaches or ____________. don’t have enough time __________________. something on the Internet is not _____________. search for information and _______________. ______________ and _____________ at home. ________________ by sending e-mails and _________________. control the speed and direction find diseases easily control the robots place and cancel orders watch movies do shopping do business chatting online communicate sore eyes to study or exercise true or good 14 Careful reading Paragraph 1 Read para.1 and fill in the following table. Place The usage of computers In space In hospitals In factories In business control the speed and direction find diseases easily and solve other problems do dangerous work used to place and cancel orders 15 Listen and follow, then find out the key points. Paragraph 1 Since computers were invented in the USA in the 1950s, they have become very important in many areas of work and leisure. There is no doubt that computers are very useful in technology and business. since + 一般过去时态的句子/过去的时间点/一段时间 + ago， 用于现在完成时态之中，且这个现在完成时态的句子中的谓语动词要用延续性动词。 eg. He has lived here since 1999. He has been away from Chongqing since 10 years ago. 16 1. There is no doubt that computers are very useful in technology and business.毫无疑问电脑在技术和贸易业都非常有用。 考点： there’s no doubt + that 从句 “毫无疑问” eg. There’s no doubt that he’s an honest man. (1)doubt (n.) (2)doubt (vt.)+ 从句 (3)doubt (vi.)+ about / of There is no doubt that we will be successful. Doubt is the key to knowledge. I don't doubt that they will be able to solve the problems. I doubt whether/if he'll change his mind. eg. There is no reason to doubt of his honesty. Language points Listen and follow, then find out the key points. Paragraph 1 In space, computers have been used to control the speed and direction of a spaceship. With the help of computers, doctors can find diseases easily and solve other problems. For example , tiny computers which are inside patients’ bodies can keep their hearts beating normally. tiny very small in size adj. 极小的，微小的 64英寸 超大型（Huge） 32英寸 大型（Large） 16英寸 中型（Medium） 8英寸 小型（Small） 4英寸 超小型（Tiny） 定语从句 18 2. In space, computers have been used to control the speed and direction of a spaceship. 在太空，电脑已经被使用来控制宇宙飞船的速度及方向。 考点： 现在完成时态结构：主语 + have/has + done +其他； 现在完成时的被动语态：主语 + have/has been + done +其他。 eg. We have planted many trees on the mountain. = Many trees have been planted on the mountain by us. 及时练习：（将下列句子改为被动语态） 1. Scinetists have launched spaceships to explore the outer space. Spaceships _____ _____ ______ to explore the outer space. 2. We have planted many trees so far. Many trees _____ _____ ______ by us so far. have been launched have been planted Language points 3. For example , tiny computers which are inside patients’ bodies can keep their hearts beating normally. 举个例子，病人体内所安放的微型电脑能让他们的心脏正常跳动。 考点： （1）此句是由which引导的定语从句，来修饰computers，类似的句子还有：In factories,robots are controlled by computers that are like human brains./ They can do work that is dangerous to humans. （2）keep doing sth. “一直做某事” keep sb. doing sth. “让某人一直做某事” eg. Don’t keep him wating so long. （3）keep + adj. / keep sb./sth. + adj. eg. keep happy/quiet; keep your hands clean Language points 1. I am sorry to keep you _____ so long. A. waiting B. to wait C. to waiting D. wait 2. The new shop keeps _____ for 24 hours a day. A. opening B. to opening C. open D. to open 3. He _____ the room by his boss for a long time. A. is kept cleaning B. keep cleaning C. is kept to clean D. kept clean 4. We must always keep our classroom _____. A. cleaning B. to clean C. clean D. cleans A 闯关练习： C A C 21 Listen and follow, then find out the key points. Paragraph 1 In factories, robots are controlled by computers that are like human brains. They can do work that is dangerous to humans. In business, computers are used to place and cancel orders. They are also making the workplace safer and better. 定语从句 下订单和取消订单 22 Listen and follow, then find out the key points. Paragraph 2 Since the Internet came into being, people’s lives at home have been changed, too. More and more people have personal computers that are used to search for information and watch movies. Thanks to the Internet, people can do shopping and do business at home. Instead of writing letters on paper, people communicate by sending e-mails and chatting online. The whole world is connected. The Internet is making the world smaller, like a village. 23 Paragraph 2 Since the Internet came into being, people’s lives at home have been changed, too. More and more people have personal computers that are used to search for information and watch movies. Thanks to the Internet, people can do shopping and do business at home. Instead of writing letters on paper, people communicate by sending e-mails and chatting online. The whole world is connected. The Internet is making the world smaller, like a village. 1. connect A with B 使A与B连接 2. connect sth. (to sth.) 使电、气、水等接通 3. connect sb./sth. (with sb./sth.) 与……有联系，把……联系起来 定语从句 24 4. Instead of writing letters on paper, people communicate by sending e-mails and chatting online. 人们通过发送电子邮件，或者在网上交流，而不是在纸上写信。 考点： （1）instead 表示前面的事没做，反而做了后面的事。 eg. He didn’t go to bed. Instead, he watched TV for a long time. （2）instead of sth./doing sth. “没有/代替做某事”。 eg. He watched TV for a long time instead of going to bed. 及时练习：（将下列句子改为同义句） 1. He didn’t answer my question. Instead, he aked some questions. He _____ me some questions _____ ____ ________ my question. 2. He went to Japan on vacation instead of going to England. He _____ ____ to England. ________, he went to Japan. asked instead of anwering didn’t go Instead Language points Listen and follow, then find out the key points. Paragraph 3 Computers have improved our lives, but they have brought problems, too. For instance, if we work on computers too long, we may get headaches or sore eyes, and we won’t have enough time to study or exercise. Besides, not everything we read on the Internet is true or good for us. Computers help us at work and at home, but they must be used properly. 26 Paragraph 3 Computers have improved our lives, but they have brought problems, too. For instance, if we work on computers too long, we may get headaches or sore eyes, and we won’t have enough time to study or exercise. Besides, not everything (we read on the Internet) is true or good for us. Computers help us at work and at home, but they must be used properly. for instance = for example “例如” 用来举例说明某一论点或情况，一般只举同类人或物中的“一个”为例。 such as 用来列举事物时，一般列举同类人或事物中的几个例子。eg. （1）For instance (For example), Japan has a lot of earthquakes. （2）I like fruits, such as apples, pears and bananas. 定语从句 27 5. Besides, not everything we read on the Internet is true or good for us. 此外，并不是所有我们在网上读到的信息都是真实或对我们有益的。 考点： （1）辨析：besides, except 与 beside ①besides 意为“（包括......在内）除此之外”。 ②except 意为“除了（不包括......在内）”。 ③beside 意为“在......旁边”，相当于next to 和near。 （2）not everything 意为“不是每件事”。这是一个表示“部分否定”的句子。完全否定为 Nothing we read on the Internet is true or good for us.或 None of the things we read on the Internet is true or good for us. Language points 1. ________ （除了）English, we learn math, Chinese, politics and some other subjects. 2. He didn’t become a teacher. Instead, he became a doctor. （改为同义句） He became a doctor ______ ____ a teacher. Besides 闯关练习： instead of 29 Post-reading 30 Find out these phrases from the text. in the 1950s there’s no doubt +that从句 with the help of sb. = with one’s help keep doing sth. 1.在20世纪50年代 2.毫无疑问 3.在某人的帮助下 4.一直做某事 让某人一直做某事 5.出现 6.多亏了某人 7.而不是做某事 8.举例 9.太多（+不可数名词） 太 keep sb. doing sth. come into being thanks to sb. instead of doing sth. for instance = for example too much + 不可数名词 much too + adj./adv. 31 Find out these phrases from the text. adj./adv. + enough to do sth. make sb. do sth. make sb. + adj. turn on/turn off 10.足够......做某事 11.让某人做某事 使某人...... 12.打开/关掉/ 开大声点/关小声点 13.像往常一样 14.没有（三者及以上） 15.换掉 16.在世界上 17.事实证明...... turn up/turn down as usual none of them break down in the world it proves + that从句 32 Write a short passage with the title One Day Without Computers. The following information may help you. Suppose you were on a special day in 2030. During the day, there were no computers in the world. What trouble would you have? You may begin like this: One Day Without Computers Today, when I got up, I just turned on the computer as usual, but it didn’t work. Then I tried my brother’s PC, my parents’, even my dog’s, but none of them worked. Later, it was reported on TV that all of the computers in the world broke down today… 2 33 One Day Without Computers Today, when I got up, I just turned on the computer as usual, but it didn’t work. Then I tried my brother’s PC, my parents’, even my dog’s, but none of them worked. Later, it was reported on TV that all of the computers in the world broke down today. So the world is quite different. For instance, we can’t play games, watch movies or do shopping at home. Besides, we can’t communicate by sending e-mails or chatting online. Without the help of computers, businessmen can’t place or cancel orders online. Teachers can’t give lessons to their students. What’s worse, robots controlled by computers can’t do dangerous work for humans. Even the doctors can’t find the diseases easily. In short, we almost have trouble with everything without computers today. You can write it like this: 34 Exercises I. 根据语境及汉语提示形式填空。 1. You can _________ (取消) the order like this. 2. The world is __________ (连接) because of the Internet. 3. Sorry, I don't know what his office is like. I never went ________ (里面) it. 4. If you are interested in something, your ________ (大脑) will be more active. 5. He gave me some medicine, some fruit and some suggestions ________ (此外). cancel connected inside brain besides II. 完成译句。 1. 毫无疑问，中国是一个安全的居住之地。 There's _____ ________ that China is a safe place to live. 2. 你知道太极拳是什么时候形成的吗？ Do you know when Taijiquan _______ _______ _______? 3. 这儿有许多种污染，比如空气污染和光污染。 There are many kinds of pollution, ______ ________ air pollution and light pollution. 4. 戴维劝他的母亲使用清洁能源来代替烧煤。 David advised his mother to use clean energy_______ _______ burning coal. 5. 有了ChatGPT的帮助，人们写论文变得相当简单。 It's quite simple for people to write papers _____ _____ _____ _____ ChatGPT. Exercises no doubt came into being for instance instead of with the help of summary We learn: 1. Some words: doubt, tiny, inside, brain, cancel, connect 2. Some phrases: no doubt, for instance 3. Some sentences: (1) There is no doubt that computers are very useful in technology and business. (2) Computers help us at work and at home, but they must be used properly. We can: 1. Talk about the importance of computers. 2. Write a composition by using our imagination. 37 Homework Read 1a. Memorize the useful expressions and key sentences which we learn today. Finish Section C in your workbook. Preview Section D. 38 THANKS 39 2024 Blues 816.0 2024 Blues 1032.0 2024 Blues 744.0 2024 Blues 1056.0 2024 Blues 720.0 2024 Blues 768.0 2024 Blues 1152.0 2024 Blues 1032.0 2024 Blues 840.0 2024 Blues 1104.0 2024 Blues 864.0 2024 Blues 864.0 2024 Blues 1104.0 2024 Blues 16992.0 2024 Blues 22248.0 2024 Blues 20016.0 2024 Blues 35904.0 2024 Blues 31728.0 $$nullnullnullnullnullnullnullnullnullnullnullnull