Unit 5 Revealing nature Understanding ideas 课件-2025-2026学年高中英语外研版选择性必修第一册

该高中英语课件围绕达尔文进化论及发现过程展开，通过问题链导入，从核心词汇（uncover, discover）到理论背景（提出者、旅程），再到阅读结构分析（段落划分、写作手法如“欲扬先抑”），搭建从基础到深层的学习支架。 其亮点在于以思维品质培养为核心，拆解发现过程（研究提问-假设-证据-怀疑）引导分析推断，结合语言能力提升（evolve衍生词讲解、阅读结构解析），并通过标题双层理解等设计激发学习能力。学生能提升逻辑思维与表达，教师可获得结构化教学资源。

Revealing nature Book 4 Unit 5 uncover discover ___________ theory What theory is it? evolutionary Who put forward it? Darwin More information about Darwin? What does this word tell you? difficult Darwin’s Who’s journey? What does he discover? evolutionary theory More questions you want to ask about? 3 Read for the structure Para.1 Para.2 Para.3 Para.4 Para.5 Para.6 Para.7 Introduction Conclusion the process of the discovery More information about Darwin? Para. 1: Introduction not the captain’s first choice； a young man without completing degree； a letter from his father-- “a disgrace to yourself and all your family” one of the most important scientific discoveries of all time. What writing technique does it use? 欲扬先抑 What? How? Para. 2-5: How did Darwin discover it? _______ various living things Ask himself the question: how _______some species of animals were very similar... Maybe animals evolved as they adapted to thier changing environments? Saw a variety of nes species ....had evolved according to what food was available... Evolved from a common ancestor; Over time, it had evolved into many new species; The answer to how news species came to exist. Notice there were difference between finches on each of the island. It seemed An idea:________________________ Study Think differently Notice: summarize the process ______________ ______________ ______________ ask questions hypothesis(假设) evidence Suspect: _____________ ___________________ ___________________ ______________ Did people immdiately accept it at that time? finding Common belief The result of Darwin’s theory Read para 3-7 Many people refused to believe that.. one of the most important works; changed ideas ....forever... They were shocked. So convincing...that... People believed that...had appeared..., and had not changed since. immediately cause a storm What can you learn from it? Truth is in the hands of a few people People refuse it at the very first beginning and gradually accept it. We can find that people’s belief is also _________. evoloving. Choose the main idea of the passage and give your reasons. 1. Darwin’s interest in various living things made him a great naturalist. 2. Darwin’s journey on the Beagle inspired his Theory of Evolution. 3. Darwin went on a journey to confirm his theory that humans had evolved over time. How do you understand the title? Literally, ___________________________. More imorpantly, ______________________ it refers to Darwin’s physical voyage around the world. it implies how Darwin’s evolutionary theory is gradually accepted, which is a long journey. 9 Do you really believe Darwin’s evolutionary theory ? Hope you could think independely and find the truth in a scientific way. Darwin’s theory put foward that higher species evolve from the lower ones, which is a common beleif nowadays. answer the call complete one’s degree be a disgrace to… the young man in question be fascinated by give sb. the chance to do be crowded with come to exist 响应呼吁 完成学位 ......的耻辱 所说的这个年轻人 被......所吸引 给某人机会做...... 挤满 产生 给某人机会做...... 适应变化的环境 引起强烈反响 有史以来最重要的著作 各种各样的新物种 进化成很多新物种 从更低的生命形式进化而来 give sb. the chance to do adapt to the changing environment cause a storm one of the most important works ever written a variety of new species evolve into many different species evolve from lower forms of life （使）逐渐形成，逐步发展，逐渐演变 进化；演化 evolution evolutionary adj. 进化的；逐渐发展的 The idea evolved from a drawing I discovered in the attic.  The company has evolved into a major chemical manufacturer. The three species evolved from a single ancestor. In the course of ___________ (evolve), some birds have lost the power of flight. The ___________ (evolve) process of technology has transformed our daily lives. 13 that so that changing to in on with to on to … but it was the birds ______ interested the most. But Darwin’s scientific studies were _____ convincing _____ more and more people started to believe his theory. Maybe animals evolved as they adapted _____ their _________ (change) environment. After Darwin had spent some time _____ South America, his room _____ the ship was crowded _____ samples of the plants and animals he had collected. He noticed that some species of animals were very similar ____ each other. It seemed their beaks had evolved according to what food was available _____ that particular island. And that was the answer _____ how new species of plants and animals came to exist. 14 $