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

U5 Revealing nature A Journey of Discovery (Understanding ideas) What species do you recognise in the picture in the evolutionary tree?(P66)? What factors can cause the process of evolution? ? Read this picture and talk about the following questions. Look at the evolutionary tree and answer: 1 What species do you recognise in the picture? 2 What factors can cause the process of evolution? The ever-changing environment of nature environmental changes population immigration genetic mutation (突变) cultural preferences... paramecium /ˌpærəˈmiːsɪəm/ 草履虫 earthworm snail crab fish tortoise bird horse jellyfish starfish frog human moss 苔藓 algae /ˈældʒiː/ 藻类 fern 蕨类 conifer 针叶林 broad-leaved tree Read this picture and talk about the following questions. higher forms of life lower forms of life evolve evolution 3. What is the direction of evolution? Charles Robert Darwin(1809-1882) was an English geologist and naturalist. In his famous book On the Origin of Species, Darwin proposed the theory that organisms (individual life forms) evolve extremely slowly. He stated that the organisms that were better suited to their environments would survive and pass on their favorable characteristics to the next generation, while the less suitable organisms would gradually die out. He called this process “natural selection”. Prediction: Looking at the picture, how do you understand the title? generally: a trip from one place to another place Darwin’s research work leading to his discovery of evolution literarily: the process by which something gradually develops 事物逐渐发展的过程 Read the passage and talk about your understanding of the title. Match the main idea of following paragraphs. A. Develop ideas—— finches evolved from a commom ones. B. Propose a theory. C. On his journey—— studied various living things. D. Answer the call of the captain. E. Think differently and generate ideas. Para. 4 Para. 2 Para. 3 Para. 1 Para. 5 Read for main idea Para. 6 Para. 7 F. The greatness and influence of his book. G. Look for more evidence— beaks evolved accordingly. Read for the structure The genre(体裁) of the passage: The passage is organized in order. Narrative Time Para.1 Para.2 Para.3 Para.4 Para.5 Para.6 Para.7 Introduction Conclusion the journey of the discovery 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. Read Para 2-6,number the puzzle pieces in order. Para.1 Para.2 Para.3 Para.4 Para.5 Para.6 Para.7 Introduction Conclusion P69 Activity 4 1 2 3 4 5 the journey of the discovery 1 ON HIS JOURNEY Darwin studied _____________________________ __________________________________________________________________________________. He noticed that some species of animals were _____________________________________. various living things in their natural environments and samples of the plants and animals very similar to each other he had collected Complete the information. 2 GENERATE IDEAS Darwin asked the questions: How did different species ___________________? __________________________________________________________________________ come to exist Maybe animals evolved as they adapted to their changing environments? 3 LOOK FOR MORE EVIDENCE On the Galápagos Islands: He noticed ________________________________ _________________________________________. It seemed the beaks ________________________ _________________________________________. that there was a difference between the finches on each of the islands had evolved according to what food was available on that particular island 4 DEVELOP IDEAS Darwin suspected that the finches _______________ ____________________________________________________________________________and it had _________________ ___________________________________________. slowly evolved into a common ancestor, which had arrived on the islands a long time before many new species had evolved from 5 PROPOSE A THEORY The Theory of Evolution: living things, including humans, ____________________________________. had evolved from lower forms of life Why did Darwin not publish his Theory of Evolution until 1859, about twenty years after his discovery? It may need to collect more information and materials to support the theory. He may be worried about being restricted by the traditional social ideas of that time. At that, Darwin was very young, and he may worry about the publisn of the theory would harm his future. Think and Share What kind of person was Darwin according to the passage? He was determined and curious about science and was enthusiastic to make new discovers. determined, persistent curious, critical thinker enthusiastic Think and Share How do you think the human species will evolve in the future? Humans may become taller and taller. Humans may liver longer. Humans may become wiser and wiser. ... Think and share Post-reading Activity 6 Useful expressions 鲜为人知的遥远国度 响应呼吁 完成学位 ……的耻辱 有史以来最重要的科学发现之一 所说的这个年轻人 被……所吸引 给某人机会做…… 研究各种各样的生物 被……挤满 产生（exist短语） distant countries yet little known answer the call complete one’s degree a disgrace to… one of the most important scientific discoveries of all time the young man in question be fascinated by give sb. the chance to do study various living things be crowded with come to exist in question (1) that is being discussed 讨论中的 (2) in doubt; uncertain 有疑问；不确定 e.g., The future of public transport is not in question. out of the question e.g., A trip abroad is out of the question this year because of the pandemic. (impossible or not allowed and therefore not worth discussing) 不可能；不允许；不值得讨论 /come into existence Useful expressions 适应新情况 各种各样的新物种 进化成很多新物种 引起强烈反响 从更低的生命形式进化而来 Para. 4 … but it was the birds______ interested the most. Para. 6 But Darwin’s scientific studies were _____ convincing _____ more and more people started to believe his theory. adapt (oneself) to a variety of new species evolve into many different species cause a storm evolve from lower forms of life that so that Blank Filling Fill the blanks with suitable prepositions. 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. … adapt _____ the changing environments It seemed their beaks had evolved according to what food was available _____ that particular island. … the answer _____ how new species of plants and animals came to exist in on with to to on to Lavf58.29.100 Packed by Bilibili XCoder v2.0.2 $