Unit5 Revealing nature Developing ideas Reading 课件-2025-2026学年高二英语外研版选择性必修第一册

该高中英语课件围绕外研版Book 4 Unit 5“植物的秘密语言”，聚焦植物通过化学物质、声音及“木广网”交流的核心知识。课堂导入结合捕蝇草等图片、电影《阿凡达》片段及视频，从神话传说过渡到科学研究，通过快速阅读梳理文章结构、仔细阅读分析细节，搭建从现象到原理的学习支架。 其亮点在于融合语言能力与思维品质培养，如用流程图解析豆类植物化学交流过程、表格归纳玉米等声音交流实例，提升信息整合能力；对比“木广网”与互联网，培养逻辑思维。任务型活动如观察日记写作、小组口语汇报生物交流方式，促进主动学习。助力学生提升语言技能与探究精神，为教师提供结构化活动设计与多元评价素材。

Developing ideas By Mr. Able Book 4 Unit 5 Revealing nature The Secret Language of Plants 外研版 attack? move? breathe? speak? eat? steal? sleep? think? Look at the pictures and talk about what plants can do. flytrap (捕蝇草) mimosa [mɪ'məʊzə] (含羞草) pea Activity 1 Lead-in What else do you think the plants can do? What can plants do in the film Avatar? Activity 1 Lead-in 3 Activity 1 Lead-in Let’s watch another video clip. If plants can really communicate with each other, how? Activity 2 Fast reading Task 1. Read the text fast and find out the ways in which plants communicate. by using chemicals by using sound by using the “wood wide web” 5 Many cultures have stories of talking trees. New research has revealed that plants can communicate. Plants use chemicals to communicate. Plants use sound to communicate. Para. 1 Para. 2 Para. 3 Para. 4 Plants use the “wood wide web” to communicate. Scientists are learning more about the secret ways in which plants talk to each other. Para. 5 Para. 6 Task 2. Read for the main idea of each paragraph and the structure. Topic: Plants can communicate Plants have various ways to communicate Part 1 Introduce the topic Part 2 Body Part 3 Conclusion Activity 2 Fast reading Task 3. The writing style of the passage is ___________. Activity 2 Fast reading A. Narration B. Argumentation C. Exposition Exposition literally means “explaining or making clear by giving details”.Exposition, as a passage type, is to expose information, simply put, to present the information in a way to get it across to readers. √ Read Para 1 and find out its topic sentence. Talking plants have long been a thing of myths and legends. Many cultures have stories of talking trees that give advice as well as warnings to people. Alexander the Great and Marco Polo were said to have visited such a tree in India. And in some modern stories, such as the film Avatar, trees can communicate with animals and people. Activity 3 Careful reading — a thing of myths and legends Talking trees give _____________________ to people, eg., Alexander the Great and Marco Polo were said to have visited such a tree in India. Evidence from stories of many cultures Evidence from _________________ some modern stories Trees in the film Avatar can communicate with ___________________. animals and people advice and warnings Talking plants 8 With us long believing that talking plants are fantasy, new research has revealed something amazing: it appears that plants can communicate after all. Read Para 2 and answer the following question. Activity 3 Careful reading Q. What is the function of Para 2? A. To introduce the following context. B. To describe an experiment. C. To tell the importance of plants. D. To give a piece of evidence. √ 9 Q1. How does a bean plant use chemicals to communicate with each other? Q2. Why do scientists do research on this plant warning system? Q3. What figure of speech is being used when the plants are described as calling for help? It has been known for some time that plants use chemicals to communicate with each other. This happens when a plant, say a bean plant, gets attacked by insects. The plant releases tiny amounts of chemicals from the leaves that are being eaten. This is like a warning, or a call for help: “I'm being attacked!" When another bean plant detects chemicals from its injured neighbour, it starts to release its own, different chemicals. Some of these drive insects away. Others attract insects---the wasps! The wasps kill the insects that are eating the bean plants. Scientists hope to learn more about this plant warning system, so that we can use it to grow crops without pesticides. Read Para 3 and answer the following questions. Activity 3 Careful reading 10 bean plant A _____ bean plant B ______ the chemicals ________ insects away drive ________ the wasps Work out the graph: kill Q1. How does a bean plant use chemicals to communicate with each other? releases its _____, different chemicals _________ tiny amounts of _____________ as a warning or call for help: “I’m being attacked!” release chemicals attack detect own attract ___ Scientists hope to learn more about this plant warning system, so that we can use it to grow crops without _________. pesticides Q2. Why do scientists do research on this plant warning system? A. To explore the wonders of nature. B. To apply it into agriculture. C. To protect plants. D. To predict the future of plants. √ Q3. What figure of speech is being used when the plants are described as calling for help? A. simile D. personification C. hyperbole B. metaphor √ Learning to learn Personification means giving human characteristics to something that is not human. By using human characteristics to describe an object, animal or even a place, personification can make descriptions more vivid. Can you find more examples in the coming paragraphs? Q1. How does a bean plant use chemicals to communicate with each other? Q2. Why do scientists do research on this plant warning system? Q3. What figure of speech is being used when the plants are described as calling for help? It has been known for some time that plants use chemicals to communicate with each other. This happens when a plant, say a bean plant, gets attacked by insects. The plant releases tiny amounts of chemicals from the leaves that are being eaten. This is like a warning, or a call for help: “I'm being attacked!" When another bean plant detects chemicals from its injured neighbour, it starts to release its own, different chemicals. Some of these drive insects away. Others attract insects---the wasps! The wasps kill the insects that are eating the bean plants. Scientists hope to learn more about this plant warning system, so that we can use it to grow crops without pesticides. Read Para 3 and answer the following questions. Activity 3 Careful reading 14 More surprisingly, plants also use sound to communicate. People can’t hear these sounds, but plants are making them. Some plants make noises with their roots. Corn and chilli plants do this. They also “listen” to the noises from other plants. A chilli plant can tell if a neighbouring plant is helpful, or unfriendly. Some trees make clicking noises when there is not enough water, indicating drought is arriving. Plants How they communicate using sound Example corn and chilli plants ____________ with their roots listen to the noises from ___________ some trees make noises other plants make clicking noises when there is not ___________, indicating drought is arriving. enough water A chilli plant can tell if a ____________________is helpful, or unfriendly. neighbouring plant Read Para 4 and work out the table. Activity 3 Careful reading Most surprisingly of all, plants have an amazing system of communication that can link nearly every plant in a forest. Scientists call this system the “wood wide web”. It is in some ways similar to the Internet we use. While the Internet is a worldwide network of computers linked by cables and satellites, the wood wide web is linked underground by fungi. This fungal network links the roots of different plants to each other. Using the wood wide web, plants can share information and even food with each other. For example, some pine trees can send food to smaller pine trees to help them grow. But just like our own Internet, the wood wide web has its own version of “cybercrime”. Plants can steal food from each other, or spread poisons to attack other plants. Perhaps one day scientists will learn how to create a “firewall” to help prevent these attacks within the wood wide web. roots of different plants are linked to each other underground by _____ its function “cybercrime” __________ perhaps one day it will be created to help prevent attacks within wood wide web enables plants to share ____________ and even food with each other plants _____________ from each other plants _____________ to attack other plants fungi “firewall” how it is _______ Read Para 5 and work out the table about the wood wide web. Activity 3 Careful reading linked information steal food spread poisons 16 Wood wide web Scientists are learning more every day about the secret ways in which plants talk to each other. Who knows? Maybe one day we will know enough about plant communication to be able to “talk” with them ourselves. Q1. What is the function of Para. 6? Para 6 is a conclusion and a restatement of the passage topic. It also raises an expectation about future research of plant communication. Read Para 6 and answer the questions. Activity 3 Careful reading Q2. What is the writer’s attitude towards the scientific research on the secret language of plants? A. Positive B. Negative C. Neutral D. Indifferent √ Task 1. Organise information from the passage and complete the diagram. Using chemicals * The plant releases chemicals ____________ that are being eaten. * When another plant detects the chemicals, it starts to ______________ ____________________. from the leaves release its own, different chemicals Using sound * Some plants make noises _____________________. * A chilli plant can __________ __________________________ __________________________. * Some trees make ___________ __________________________. with their roots tell if a neighbouring plant is helpful, or unfriendly clicking noises to indicate drought’s coming Using the “wood wide web” * This fungal network links _____ ____________________________. * Plants can __________________ _____________ with each other. * Plants can __________________ _____________________ to attack other plants. the roots of different plants to each other share information steal food from each other Modern research is showing that plants can __________________________. Maybe one day we will be able to “talk” with plants. communicate with each other and even food or spread poisons Activity 4 Post reading 19 Task 2. What discoveries are described in the two reading passages in this unit and what do their meanings have in common? discovery of evolution discovery of communication between plants Secrets in nature need to be explored. Activity 4 Post reading It will help us know more about the world of plants and then get a better understanding of the secret of nature and encourage us to explore more about the mysterious nature. What’s more, it will teach us an important lesson, that is, human should live in harmony with mother nature. And it is our responsibility to fulfill the mission. Task 3. What do you think are the benefits of studying plant communication? Activity 4 Post reading 21 • Bees “dance” to signal to other bees that they have found food. • Ants communicate with each other through touch, chemical signals, moving their bodies and even using their legs to make sounds. What other ways can you think of? Activity 5 Speaking Work in groups. Give a talk about communication between living things. Organise your ideas following the steps below: Begin with what living things you have chosen to talk about. Explain how they communicate and give examples. Conclude by explaining what we have learnt from their behaviour. What other ways can you think of? Activity 5 Speaking Can plants really talk? Activity 6 Revison Scientists are learning the secret ways in which plants “talk” to each other. It has been known for some time that plants use chemicals 1______________ (communicate) with each other. When 2________ (attack) by insects, the plant releases chemicals from the leaves that 3______________ (eat). This is like 4___ warning. When another plant detects the chemicals, it starts to release 5___ (it) own, different chemicals. Some chemicals drive insects away. 6____________ (surprising), plants also use sound to communicate. Some plants make noises with their roots. Some trees make clicking noises when there is not enough water, 7__________ (indicate) drought is arriving. Most surprisingly of all, plants have an 8________ (amaze) system of communication that can link nearly every plant in a forest. It is called “ wood wide web”, 9______ is in some ways similar to the Internet we use. Using the wood wide web, plants can share information and even food 10_____ each other. Surprisingly indicating amazing which with to communicate attacked are being eaten a its Complete the summary by filling correct words or correct forms of the given words. Activity 6 Revison 给出建议 据说 与……交流 遭受攻击 从……释放 把……赶走 发出噪音 毕竟 更令人吃惊的是 和……类似 把……和……连接起来 从……偷…… Important phrases Activity 6 Revison give advice/suggestions be said to/ It is said that... communicate…with get attacked/be under attack release … from drive ... away make noises after all more surprisingly be similar to link … to steal … from By Mr. Able Book 4 Unit 5 Revealing nature 外研版 Write an observatory journal Developing ideas Read the observational journal and answer the questions: Activity 1 Reading Q1. How were the daffodil bulbs planted? They were planted side by side in soil with the pointed ends facing up. The leaves grew in a sunny, but cool place. The flowers are yellow and white, and shaped like trumpets. Q2. In what environment did the leaves grow? Q3. What do the flowers look like? Work in pairs. Look at the pictures and talk about how the sunflower grows. Activity 2 Speaking Write your observational journal about the sunflower. Activity 3 Writing Paragraph 1 Paragraph 2 Paragraph 3 time, the way to plant, environment, the special requirement time, sprout, shape and texture, environment time, height, colour and shape An observational journal about the sunflower 1 June Covered with 1-2 cm of moist soil, the sunflower seed takes a few days to come up after being planted. Water has been added regularly and the hard seed coat softens in the damp soil to allow the first root to pierce downwards and the first leaves to push to the soil surface. 6 July The root continues to grow downwards. The single stem grows hollow and smooth, revealing large spade-shaped leaves from the growing tip. Gradually, the plant’s growing tip reveals the first hints of development of the flower bud. The plant stem becomes more woody. 26 July About three weeks after the flower bud first becomes visible at the tip of the sunflower stem. It enlarges and begins to reveal a flattened disc. Over the course of one week, the yellow ray florets, and disc florets bloom across the core of the sunflower blossom. It is yellow, looking beautiful. Sample By Mr. Able Book 4 Unit 5 Revealing nature 外研版 Presenting ideas Work in groups. Look at the information about the nature documentaries and answer the questions. 1 Can you guess what secrets of nature are revealed in these documentaries? 2 What other nature documentaries have you watched? Which one do you like most? Give your reasons. Activity 1 Speaking 1. Can you guess what secrets of nature are revealed in these documentaries? 2. What other nature documentaries have you watched? Which one do you like most? The earth is the mother of mankind. Protect the ecological environment, create a good home. Caring for nature is our common responsibility. Animal World (动物世界), Dynasties (王朝) Choose one nature documentary you like and complete the notes. Activity 2 Writing Human and Nature introduction of an animal—the antelopes beautiful pictures and instructive meaning. Its purpose is to arouse people’s awareness of protecting the extinct species on earth. Practise presenting information about your documentary. Consider the following: 1 the structure of your presentation 2 useful words, expressions and structures Give your presentation to the class. Activity 3 Speaking Sample: Born in China is a 2016 nature documentary film directed by Lu Chuan. A co-production between Disney nature and Shanghai Media Group, the film was released in China on August 12, 2016, in the United States on April 21, 2017, one day before Earth Day, and in France on August 23, 2017. The film focuses on a snow leopard named Dawa and her cubs, a young golden snub-nosed monkey named Tao Tao, a female giant panda named Ya Ya along with her daughter Mei Mei, and a herd of chiru. The American release of the film is narrated by John Krasinski, the Chinese release is narrated by Zhou Xun, and the French release is narrated by Claire Keim Discover nature, explore nature, and grasp the essence of nature. End of Unit 5 Alexander the Great  (born 356 bce, Pella, Greece—died June 13, 323 bce, Babylon]) was the king of Macedonia (336–323 bce), who overthrew the Persian empire, carried Macedonian arms to India, and laid the foundations for the Hellenistic world of territorial kingdoms. Already in his lifetime the subject of fabulous stories, he later became the hero of a full-scale legend bearing only the sketchiest resemblance to his historical career. Paraphrase: This happens when a plant, say a bean plant, gets attacked by insects. When a plant like a bean plant is attacked by insects, this happens. You don’t say! I can’t say… You can say that again. Who can say? 一点也不奇怪！你用不着说！ 我绝不认为…… 我完全同意你的意见。 谁能说得准？ 41 detect v. to notice or discover something, especially something that is not easy to see or hear _____________ adj. 可检测的；可发觉的 _____________ n. 侦查、探测；察觉 _____________ n. 发现者; 探测器; 侦察器 _____________ n. 侦探 detectable detection detector detective root n. /v. take root 扎根；深入人心 _______________ adj. 根源在于 ___________________ 根深蒂固的 be rooted _____ 根植于... e.g. This tradition is also firmly rooted ________ the past. in rooted deep/deeply-rooted in 43 corn chilli link v./n. link...________... 把…与…联系/连接起来 be linked _________ 与…有关 a/the link ________...( and...) 与…之间的联系 have strong links with... 和…关系牢固 e.g. Is there a link ________ smoking and lung disease? between to/with to/with between 45 Lavf59.16.100 Packed by Bilibili XCoder v2.0.2 x264 0.128.2216+688+32 a17ff54 tMod [8-bit@4:2:0 X86] Lavf58.20.100 Bilibili VXCode Swarm Transcoder v0.3.76 $