Unit 5 Power of Ideas（第4课时）Section B 1a-2c课件2026-2027学年人教版九年级英语上册

该初中英语课件围绕“如何将想法变为现实”，以造纸术为核心案例，涵盖reality、responsible等词汇及“first...then...next...finally”等句型。课堂导入通过提问中国四大发明激活已知，再引导学生阅读文本，通过段落匹配、代词指代分析、材料对比表格等学习支架，帮助学生从整体到细节理解语篇。 其亮点在于融合文化意识与思维品质，通过介绍蔡伦造纸术的历史背景和制作过程，增强学生家国情怀，同时引导学生分析步骤逻辑、对比材料优缺点，提升思维层次。语言能力培养贯穿始终，如词汇拓展表格、语篇填空练习等，助力学生掌握表达方法。学生能提升语言运用与文化理解，教师可借助系统活动设计高效教学。

Unit 5 Power of Ideas Section B How do we turn ideas into reality? 课时4(1a-2c) 九年级上册人教 1. 掌握并正确运用词汇：reality, responsible, responsible for sth., rapid, shape, bronze, ware, stone, jute, fibre, expensive, officer, workshop, none, ideal, bark, certain, suitable, liquid, cheap, creation, later on, speed up, result in, lead to, birth, rapidly, afford, company, sticky, production, gradually, widely 2. 能介绍某样发明的历史、制作过程和带来的影响：① In the first step ... Then ... Next ... Finally ... ② ... not only ... but also ... ③ It led to ... This resulted in ... Learning goals Do you know what the four great inventions of ancient China are? Papermaking Moveable Type Gunpowder Compass Warming up How do we turn ideas into reality? (教材P46 Section B 标题) reality /riˈæləti/ n. 现实；事实 现实 With hard work, we can turn our dreams into reality. 通过努力，我们可以把梦想为现实。 He finally accepted the reality of failure. 他最终接受了失败的事实。 reality 事实 His plan is out of touch with reality and can never be realized. 他的计划脱离现实，永远无法实现。 turn sth. into reality 将……变为现实 out of touch with reality 脱离现实 Language points 4 What material are these things made of? Find more things that are made of this material. 1a All these things are made of paper. More things made of paper: newspapers, notebooks, calendars, paper kites, etc. An Invention That Changed the World Can you imagine a world without books, newspapers, or magazines? All of these things depend on one invention—papermaking. It, more than any other invention, was responsible for the rapid spread of information that shaped our modern world. In ancient China, many different materials were used to write on, such as animal bones, bronze ware, stones, wood, bamboo, and even silk. In the Western Han Dynasty, there was also a very early form of paper made from jute—a fibre that comes from plants. However, all of these materials were either difficult to use and store, or very expensive. Read the text and match each paragraph with its topic. 1b 依靠；依赖 be used to do sth. 被用来做某事 1 2 As the head officer of the palace workshop for the emperor in the Eastern Han Dynasty, Cai Lun became interested in trying to solve the problem. Different methods for creating something to write on were tried, but none were ideal. In his time, some kinds of bark—the outer part of trees—were used to make clothes. From past experiences, Cai Lun got the idea that bark, certain plants, and old clothes could be used to make a special material suitable to write on. become interested in doing sth. 变得对做某事感兴趣 the method for doing sth. 做某事的方法 Read the text and match each paragraph with its topic. 1b 3 In the first step of Cai Lun’s experiment, all the ingredients were mixed and boiled in water. Then, this material was beaten, cut up, and mixed with water again. Next, the liquid was poured over a bamboo screen, leaving just the fibre. Finally, this fibre was dried and pressed to form paper. To everyone’s surprise, this paper was soft, light, easy to make and use, and most importantly, cheap. In 105 CE, Cai Lun showed his creation to the emperor. The emperor was very pleased and praised Cai Lun for his great work. Read the text and match each paragraph with its topic. 1b 4 to one’s surprise 令某人吃惊的是 praise sb. for sth. 因某事称赞某人 Later on, the papermaking technique not only speeded up the development of Chinese culture, but also changed civilizations around the world. It first spread to China’s neighbouring countries and finally reached Europe through Arab countries in the 12th century. When the use of paper and printing came together in later centuries, it led to a rapid increase in the number of books. This resulted in a new birth of knowledge, creating the world we have today. Read the text and match each paragraph with its topic. 1b 5 Read the text and match each paragraph with its topic. 1b Paragraph 1 A. Early materials to write on Paragraph 2 B. Cai Lun’s experiment Paragraph 3 C. Introduction to the topic Paragraph 4 D. How paper changed the world Paragraph 5 E. Cai Lun’s creative idea It, more than any other invention, was responsible for the rapid spread of information that shaped our modern world. (教材P46 1b) responsible /rɪˈspɒnsəbl/ adj. 作为原因的；有责任的 The floods were responsible for over a hundred deaths. 洪水造成一百多人死亡。 ① 作为原因的 responsible for sth. 引起某事 Language points 11 It, more than any other invention, was responsible for the rapid spread of information that shaped our modern world. (教材P46 1b) responsible /rɪˈspɒnsəbl/ adj. 作为原因的；有责任的 We should be responsible for what we share online. 我们应该对我们在网上分享的东西负责。 Mary is responsible for training new staff. 玛丽负责培训新员工。 ② 有责任的 be responsible for (doing) sth. 对（做）某事负责任 Language points 12 It, more than any other invention, was responsible for the rapid spread of information that shaped our modern world. (教材P46 1b) responsible /rɪˈspɒnsəbl/ adj. 作为原因的；有责任的 [形容词] 可靠的，可信任的 You can leave the children with Billy—he’s very responsible. 你可以把孩子们交给比利，他非常可靠。 词义拓展 Language points 13 It, more than any other invention, was responsible for the rapid spread of information that shaped our modern world. (教材P46 1b) shape /ʃeɪp/ v. 塑造 n. 形状 Like it or not, our families shape our lives and make us what we are. 不管喜欢与否，我们的家庭塑造我们的生活并铸就我们的个性。 ① v. 塑造；影响……的发展 Language points 14 It, more than any other invention, was responsible for the rapid spread of information that shaped our modern world. (教材P46 1b) shape /ʃeɪp/ v. 塑造 n. 形状 in shape 在形状上 in the shape of 呈……形状 out of shape 变形的，走样的 ② n. 形状 This island is square in shape. 这个岛呈正方形。 Language points 15 It, more than any other invention, was responsible for the rapid spread of information that shaped our modern world. (教材P46 1b) shape /ʃeɪp/ v. 塑造 n. 形状 My grandma can cut out patterns in the shape of cartoon characters. 我奶奶可以剪出卡通人物形状的图案。 His old hat is quite out of shape. 他的旧帽子已不成样子了。 ② n. 形状 Language points 16 However, all of these materials were either difficult to use and store, or very expensive. (教材P46 1b) either...or... 或者……或者……；要么……要么…… We can either go to the movies or go shopping this evening. We don’t have enough time to do both. 今晚我们要么去看电影，要么去购物。我们没有足够的时间做两件事。 表示从两者中任选其一，用于连接两个并列成分。当连接两个名词或代词作主语时，谓语动词应与离其最近的主语在人称和数上保持一致，即遵循“就近原则”。 Language points 17 However, all of these materials were either difficult to use and store, or very expensive. (教材P46 1b) either...or... 或者……或者……；要么……要么…… Either Jenny or the twins are going to the cinema with me. 要么珍妮，要么那对双胞胎要和我一起去看电影。 表示从两者中任选其一，用于连接两个并列成分。当连接两个名词或代词作主语时，谓语动词应与离其最近的主语在人称和数上保持一致，即遵循“就近原则”。 和the twins保持一致 Language points 18 However, all of these materials were either difficult to use and store, or very expensive. (教材P46 1b) expensive /ɪkˈspensɪv/ adj. 昂贵的；价格高的 This coat is too expensive. Please show me a cheap one. 这件外套太贵了。请给我拿一件便宜的。 She got an expensive handbag as a birthday gift from her uncle. 她收到了叔叔送的一个昂贵的手提包作为生日礼物。 反义词为cheap“便宜的”，常用expensive或cheap来形容物品的贵或便宜。 以元音音素开头，前面的不定冠词应用an Language points 19 However, all of these materials were either difficult to use and store, or very expensive. (教材P46 1b) expensive /ɪkˈspensɪv/ adj. 昂贵的；价格高的 表示价格的高或低要用high或low。 The price of this kind of tea is high and that kind is low. 这种茶叶的价格高，那种的价格低。 用法拓展 Language points 20 Different methods for creating something to write on were tried, but none were ideal. (教材P46 1b) none /nʌn/ pron. 没有一个；毫无 none no one 没有一个；毫无 没有人 既可指人，也可指物 只能指人 可单独使用，也可与of连用，后跟不可数名词或可数名词复数 相当于nobody，一般单独使用，不与of连用 ① “none of+不可数名词”作主语时，谓语动词用单数形式 ② “none of+可数名词复数”作主语时，谓语动词用单数或复数形式均可 作主语时，谓语动词用单数形式 常用来回答how many或how much（提问数量）引导的特殊疑问句 常用来回答who引导的特殊疑问句 Language points 21 Different methods for creating something to write on were tried, but none were ideal. (教材P46 1b) none /nʌn/ pron. 没有一个；毫无 —How many apples can you see on the tree? 你能看到树上有多少个苹果？ —None. 一个也没有。 None of the news was very exciting. 没有一条消息是激动人心的。 Language points 22 Different methods for creating something to write on were tried, but none were ideal. (教材P46 1b) none /nʌn/ pron. 没有一个；毫无 None of these pens works/work. 这些钢笔没有一支能用。 No one/Nobody is perfect. 人无完人。 Language points 23 Different methods for creating something to write on were tried, but none were ideal. (教材P46 1b) ideal /aɪˈdiːəl/ adj. 最合适的；理想的 n. 理想；完美的人（或事物） ideal 名词 形容词 The weather is ideal for a trip. 这天气特别适合旅行。 最合适的 理想的 理想 完美的人（或事物） She has an ideal job that allows her to work and study at the same time. 她有一份理想的工作，能让她兼顾工作和学习。 To be a scientist is his lifelong ideal. 成为一名科学家是他毕生的理想。 In his eyes, his grandfather is the ideal of kindness and honesty. 在他眼里，爷爷是善良和诚实的完美典范。 同义词为perfect，常与介词for连用 Language points 24 From past experiences, Cai Lun got the idea that bark, certain plants, and old clothes could be used to make a special material suitable to write on. (教材P46 1b) certain /ˈsɜːtn/ adj. 某些；确定的 pron.（不提及人或事物的名称时用）某些 Certain people might disagree with this. 某些人对这事可能不会赞同。（作形容词） ① [形容词]&[代词] 某些 certain of... ……中的一些/若干 Language points 25 certain /ˈsɜːtn/ adj. 某些；确定的 pron.（不提及人或事物的名称时用）某些 Certain of the students have finished their homework. 某些学生已经完成了他们的家庭作业。（作代词） ① [形容词]&[代词] 某些 certain of... ……中的一些/若干 From past experiences, Cai Lun got the idea that bark, certain plants, and old clothes could be used to make a special material suitable to write on. (教材P46 1b) Language points 26 certain /ˈsɜːtn/ adj. 某些；确定的 pron.（不提及人或事物的名称时用）某些 ② [形容词] 确定的 be certain of/about... 对……确信无疑 be certain to do sth. 确定会做某事 for certain 肯定；确定；无疑 be certain + (that)从句 确定…… →反义词为uncertain“不确定的” From past experiences, Cai Lun got the idea that bark, certain plants, and old clothes could be used to make a special material suitable to write on. (教材P46 1b) Language points 27 certain /ˈsɜːtn/ adj. 某些；确定的 pron.（不提及人或事物的名称时用）某些 ② [形容词] 确定的 She is certain of winning the English speech contest. 她对赢得英语演讲比赛确信无疑。 She is certain to pass the exam because she has studied hard. 她一定会通过考试，因为她学习很努力。 →反义词为uncertain“不确定的” From past experiences, Cai Lun got the idea that bark, certain plants, and old clothes could be used to make a special material suitable to write on. (教材P46 1b) Language points 28 certain /ˈsɜːtn/ adj. 某些；确定的 pron.（不提及人或事物的名称时用）某些 ② [形容词] 确定的 No one knows for certain when the meeting will start. 没人确定会议什么时候开始。 I am certain that he will keep his promise. 我确定他会遵守诺言。 →反义词为uncertain“不确定的” From past experiences, Cai Lun got the idea that bark, certain plants, and old clothes could be used to make a special material suitable to write on. (教材P46 1b) Language points 29 suitable /ˈsuːtəbl/ adj. 合适的；适宜的 由“suit (v. 适合) + -able (形容词后缀)”构成。 Yunnan is suitable for visiting all year round. 云南一年四季都适合游览。 be suitable for 适合…… be suitable to do sth. 适合做某事 From past experiences, Cai Lun got the idea that bark, certain plants, and old clothes could be used to make a special material suitable to write on. (教材P46 1b) Language points 30 suitable /ˈsuːtəb(ə)l/ adj. 合适的；适宜的 由“suit (v. 适合) + -able (形容词后缀)”构成。 I don’t think you are suitable to do the job. 我认为你不适合做这份工作。 be suitable for 适合…… be suitable to do sth. 适合做某事 From past experiences, Cai Lun got the idea that bark, certain plants, and old clothes could be used to make a special material suitable to write on. (教材P46 1b) Language points 31 Later on, the papermaking technique not only speeded up the development of Chinese culture, but also changed civilizations around the world. (教材P46 1b) speed up （使）加速 The train speeded up gradually after leaving the station. 火车离开车站后，逐渐加快了速度。 Can you try and speed things up a bit? 你能不能设法加快一点事情的进度？ 反义短语为slow down “（使）放慢速度”。 Language points 32 not only...but (also)... 不仅……而且…… The story is not only interesting but (also) educational. 这个故事不仅有趣，而且有教育意义。 Su Shi has a great influence on people not only for his poems, but also for his optimistic spirit. 苏轼对人们的影响不仅在于他的诗歌，还在于他的乐观精神。 ① 用于连接两个并列成分。 Later on, the papermaking technique not only speeded up the development of Chinese culture, but also changed civilizations around the world. (教材P46 1b) Language points 33 not only...but (also)... 不仅……而且…… Not only the teacher but (also) the students were against the plan. 不仅那位老师，学生们也反对该项计划。 Not only I but (also) my sister enjoys dancing. 不仅我，连我妹妹也喜欢跳舞。 ② 连接两个并列成分作主语时，谓语动词要与其靠近的主语在人称和数上保持一致，即遵循“就近原则”。 Later on, the papermaking technique not only speeded up the development of Chinese culture, but also changed civilizations around the world. (教材P46 1b) Language points 34 Not only can he speak English, but (also) he can speak Chinese. 他不仅会说英语，还会说汉语。 ③ 连接两个并列分句且not only位于句首时，not only后的分句要使用部分倒装语序。 not only...but (also)... 不仅……而且…… Later on, the papermaking technique not only speeded up the development of Chinese culture, but also changed civilizations around the world. (教材P46 1b) Language points 35 When the use of paper and printing came together in later centuries, it led to a rapid increase in the number of books. (教材P46 1b) This resulted in a new birth of knowledge, creating the world we have today. (教材P46 1b) lead to 导致；造成 result in 造成；导致 Heavy rain led to/resulted in floods in the village. 大雨造成了村庄的洪水。 His actions could lead to/result in him losing his job. 他的行为会让他丢掉工作。 两者为同义短语，有时可互换。 lead to/result in sb./sth. doing sth. 导致某人/某物做某事 Language points 36 Find out what these pronouns from the text refer to. 1c It in Paragraph 1: ______________________________________ It in Paragraph 5: ______________________________________ it in Paragraph 5: ______________________________________ This in Paragraph 5: ____________________________________ Understanding reference words Noticing what pronouns refer to will help you understand how different parts of the reading are connected. papermaking the papermaking technique the use of paper and printing (coming together) the rapid inerease in the number of books Read again and complete the table. 1d Question Material to write on before Cai Lun Cai Lun’s paper What was it like? What was used to make it? difficult to use and store; very expensive soft; light; easy to make and use; cheap animal bones; bronze ware; stones; wood; bamboo; silk; jute; etc. bark, certain plants, old clothes Put the sentences in order. Then retell the process of making paper in your own words. 1e ____ A. The material was beaten, cut up, and mixed with water. ____ B. All the ingredients were mixed and boiled in water. ____ C. The fibre was dried and pressed to form paper. ____ D. The liquid was poured over a bamboo screen, leaving just the fibre. 1 2 3 4 Discuss the questions. 1f 1. What other ancient Chinese inventions do you know? How was the world changed by them? I know two other ancient Chinese inventions—printing and the compass. Printing made book production easier and cheaper, helping knowledge spread faster. The compass helped sailors find their way easily when they sailed on the sea, which made long-distance sea travels possible. Discuss the questions. 1f 2. What qualities do you think a great inventor has? I think a great inventor is creative, hard-working and persistent. Complete the table with different forms of the words. You can add more. 2a Vocabulary in Use Noun Verb Adjective collect creative invent product collection collective creation create invention inventive produce productive Exercises Choose the correct word to complete each sentence. 2b Vocabulary in Use 1. The use of modern medicine has helped control/spread many dangerous diseases. 2. News could travel much more rapidly/slowly with inventions like the radio and the television. 3. Fibre made from oil provides a(n) cheap/expensive solution to the problem that many people cannot afford to buy enough clothes. 4. A film was invented/produced by a film company to tell us about what robots could do for people’s lives in the future. 5. In January 1911, Feng Ru carried out a secret/public test flight in Oakland City. He showed the world what Chinese people could achieve. Exercises Fibre made from oil provides a cheap solution to the problem that many people cannot afford to buy enough clothes. (教材P48 2b) afford /əˈfɔːd/ v. 买得起；能做 Tom can’t afford the violin because it’s too expensive. 汤姆买不起那把小提琴，因为它太贵了。 I can afford to spend two hours reading every day. 我能每天抽出两个小时读书。 通常与can、could或be able to连用。 afford to do sth. 负担得起做某事 Language points 44 Complete the passage with the correct forms of the phrases in the box. Then discuss how an invention like sticky notes is turned into reality. 2c Vocabulary in Use piece of stand up result in to sb.’s surprise Did you know that an accident led to the invention of sticky notes? In 1968, a scientist named Spencer Silver was trying to make a strong glue. ____________, he produced a glue that was really weak. It could stick things, but it could be removed very easily. The glue was interesting, but no one could find a use for it. To his surprise Exercises Complete the passage with the correct forms of the phrases in the box. Then discuss how an invention like sticky notes is turned into reality. 2c Vocabulary in Use piece of stand up result in to sb’s surprise Then, in 1974, a man named Arthur Fry was trying to mark the pages in a songbook using small ________ paper. However, whenever he ________ to sing, the pieces fell to the floor. Then he remembered Silver’s glue. With the glue, the paper stayed in the songbook, but it could later be removed. Fry’s idea ________ the production of sticky notes of many sizes and colours. They gradually became popular and now are widely used all over the world. pieces of stood up resulted in Exercises They gradually became popular and now are widely used all over the world. (教材P48 2c) gradually /ˈɡrædʒuəli/ adv. 逐渐地；逐步地 His English has gradually improved since he started reading every day. 自从他开始每天阅读，他的英语逐渐提高了。 Gradually, I fitted into the university and the city I work in. 渐渐地，我融入了这所大学和我工作的城市。 可修饰动词、形容词或整个句子，同义短语为little by little和bit by bit。 Language points 47 Key words Expressions reality, responsible, rapid, shape, bronze, ware, stone, jute, fibre, expensive, officer, workshop, none, ideal, certain, suitable, liquid, cheap, creation, birth, rapidly, afford, company, sticky, production, gradually, widely responsible for sth., later on, speed up, result in, lead to ① In the first step ... Then ... Next ... Finally ... ② ... not only ... but also ... ③ It led to ... This resulted in ... Sentences Summary 48 1. 用以下句型介绍一种你感兴趣的发明，描述它的历史、制作流程及带来的影响： ① In the first step ... Then ... Next ... Finally ... ② ... not only ... but also ... ③ It led to ... This resulted in ... 2. 将本课所学内容形成重点笔记。 Homework 49 null 178321.42 $