Unit 5 Power of Ideas Section B 1a-1f 课件 2026-2027学年人教版英语九年级上册

Unit 5 Power of Ideas Section B How do we turn ideas into reality? (1a-1f) What objects can you see? What material are these things made of? 1a paper bags books envelopes lanterns They are made of paper. 2 Find more things that are made of this material. 1a cardboard box sticky note Can you imagine a world without paper? What would it be like? Do you know how to make paper? 3 (1) What was the invention that changed the world? Papermaking. (2) What do you think the rest of the passage will talk about? The history of papermaking, how paper was made, or how it spread around the world. The reading skill You can predict the main idea by looking at the title and the first paragraph. Read the title and the first paragraph. Then predict. 1b 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 wares, 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. 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 times, some kinds of bark—the outside 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. 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. Later on, the papermaking technique did not only speed 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. 1 2 3 4 5 1. What’s the type of this passage? A. Narrative B. Exposition C. Argumentation 2. What’s the main idea of each paragraph? A. Early materials to write on B. Cai Lun’s experiment C. Introduction to the topic D. How paper changed the world E. Cai Lun’s creative idea 1. How does the author introduce the topic? By raising a question to arouse readers’ interest. 2. What does "it" refer to? Papermaking 3. What is the influence of the invention of papermaking? It was responsible for the rapid spread of information. Read Paragraph 1 and answer the questions. 1b Understanding reference words Noticing what pronouns refer to will help you understand how different parts of the reading are connected. Read Paragraph 2 and complete the table. Question Material to write on before Cai Lun What was it like? What was used to make it? It was either difficult to use and store, or very expensive. Animal bones, bronze ware, stones, wood, bamboo, silk, and an early form of paper made from jute. 1b • What were the problems of those old materials? They were hard to use, store, or too expensive. Read Paragraph 3 and answer the question. 1b • What was Cai Lun’s creative idea? Where did Cai Lun get the idea? From past experiences, Cai Lun got the idea that bark, plants, and old clothes could be used to make a special material suitable to write on. _____ 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. 2 1 4 3 1e Read Paragraph 4 and put the sentences in order. • How can we describe the process of papermaking clearly? By using linking words, such as in the first step, then, next, and finally. 9 Complete the table based on Paragraphs 3 and 4. Question Cai Lun’s paper What was it like? What was used to make it? It was soft, light, easy to make and use, and most importantly, cheap. Bark, plants, and old clothes. 1d 1. Why does the writer mention the emperor in Paragraph 4? Because it shows Cai Lun’s paper was a great success and got the emperor’s recognition. 2. Before inventing his paper, Cai Lun noticed the problems with old materials and wanted to make something better. What qualities do you think Cai Lun had? He was observant, creative, and hard-working. 10 Read Paragraph 5 and answer the questions. 1b 1. How did papermaking make a difference to the world?  speed up the development of Chinese culture  change civilizations around the world  lead to a rapid increase in the number of books  result in a new birth of knowledge 2. What do these pronouns refer to? the papermaking technique the use of paper and printing the rapid increase in the number of books 1f What other ancient Chinese inventions do you know? How was the world changed by them? I know three other ancient Chinese inventions — the compass, gunpowder, and printing. The compass helped sailors find their way easily when they sailed on the sea, which made long-distance sea travels possible. Gunpowder changed the way wars were fought. It also spread to other countries and changed world history. Printing made book production easier and cheaper, helping knowledge spread faster. What qualities do you think a great inventor has? From Cai Lun’s story, I think a great inventor has several key qualities.  Curiosity and observation. Great inventors always pay attention to problems around them.  Creativity and imagination.  Perseverance and a growth mindset. Inventors face failures, but they keep trying until they succeed.  Empathy and a desire to help others. The best inventions are the ones that improve life for everyone. These qualities turn simple ideas into inventions that change the world. 1f 13 假设你能回到古代，给蔡伦写一张50词左右的感谢便条，说明纸张带来的改变 Homework: Thank-You Note Suppose you could go back to ancient times and write a thank-you note to Cai Lun, explaining the changes brought by papermaking. Dear Cai Lun, thank you for inventing papermaking! Your technique not just speeded up Chinese culture’s development, but changed world civilizations. It spread to neighbours first and reached Europe through Arab countries in the 12th century. Later, paper and printing together increased books rapidly, bringing a new birth of knowledge. We owe today’s world to your great invention—thank you! $