Unit 5 Revealing nature Developing ideas 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“植物的秘密语言”展开，核心知识点为植物通过化学物质、声音及“木维网”进行交流。课堂导入结合图片讨论（捕蝇草、含羞草等）和视频观看，从神话传说中会说话的植物过渡到现代科学研究，搭建从现象到本质的学习支架。 其亮点在于通过多模态活动（图表填空、表格对比、拟人修辞分析）培养学生语言能力（如短语“communicate with”“release...from”）、思维品质（对比“万维网”与“木维网”的异同）和学习能力（信息组织与总结）。例如用流程图解析豆类植物化学交流过程，用表格对比植物声音交流实例，帮助学生直观理解，教师可借此提升课堂互动与知识传递效率。

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? Look at the pictures and talk about what plants on the earth can do. attack breathe eat sleep move speak steal think Activity 1 Lead-in Let’s watch another video clip. Read the passage and find out the ways in which plants communicate. 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 2 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 What can plants do in the film Avatar? Read the passage and match each paragraph with its main idea. Para. 1 Para. 3 Para. 4 Para. 2 a. Plants use chemicals to communicate with each other. b. Plants use sound to communicate. c. Talking plants have been a thing of myths and legends. d. The muddy court helped him to be creative and flexible. e. New research has revealed that plants can communicate with each other. Para. 5 f. Plants use the wood wide web to communicate. Para. 6 Scanning: 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 2 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. √ With us long believing that talking plants are fantasy, new research has revealed something amazing: it appears that plants can communicate after all. Which of the following is not the functions of paragraph 2? To lead to the following context To arouse readers’ interests To summarize the above To further explain Read for detailed information (para 2) Read the passage and match each paragraph with its main idea. Para. 1 Para. 3 Para. 4 Para. 2 a. Plants use chemicals to communicate with each other. b. Plants use sound to communicate. c. Talking plants have been a thing of myths and legends. d. The muddy court helped him to be creative and flexible. e. New research has revealed that plants can communicate with each other. Para. 5 f. Plants use the wood wide web to communicate. Para. 6 Scanning: 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. Careful reading 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修辞手法 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? [pəˌsɒnɪfɪˈkeɪʃn] 拟人化 [haɪˈpɜːbəli] 夸张 [ˈmetəfə(r)]隐喻，暗喻 [ˈsɪməli] 明喻 ▲ (　　)1.When will plants use chemicals to communicate with each other? A.When they feel thirsty. B.When they need fertiliser. C.When they get threats from outer environment. D.When they hear noises and send signals to call for help. C Careful reading Read the passage and match each paragraph with its main idea. Para. 1 Para. 3 Para. 4 Para. 2 a. Plants use chemicals to communicate with each other. b. Plants use sound to communicate. c. Talking plants have been a thing of myths and legends. d. The muddy court helped him to be creative and flexible. e. New research has revealed that plants can communicate with each other. Para. 5 f. Plants use the wood wide web to communicate. Para. 6 Scanning: Organise information from the passage and complete the diagram. P58 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 ___________ __________________________. Using the “wood wide web” * This fungal network links _____ ____________________________. * Plants can __________________ _____________ with each other. * Plants can __________________ _____________________ to attack other plants. Modern research is showing that plants can __________________________. Maybe one day we will be able to “talk” with plants. communicate with each other 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. Careful reading Read the passage and match each paragraph with its main idea. Para. 1 Para. 3 Para. 4 Para. 2 a. Plants use chemicals to communicate with each other. b. Plants use sound to communicate. c. Talking plants have been a thing of myths and legends. d. The muddy court helped him to be creative and flexible. e. New research has revealed that plants can communicate with each other. Para. 5 f. Plants use the wood wide web to communicate. Para. 6 Scanning: Organise information from the passage and complete the diagram. P58 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. Modern research is showing that plants can __________________________. Maybe one day we will be able to “talk” with plants. communicate with each other Type Link every person on earth every _____________ in the forest Linked by _____________ and _________________ underground ___________ which links the ___________ of different plants to each other Use it to share _____________________ and ___________with each other Cybercrime spread computer virus to attack others' ___________ steal ______________ from each other and spread _____________ to _____________other plants Read para. 5 carefully and find the differences between "World Wide Web" and "Wood Wide Web". World Wide Web Wood Wide Web plant cables satellites fungi roots communicate, entertain, shop and study information food computers food poisons attack Help to prevent attacks . Read the passage and match each paragraph with its main idea. Para. 1 Para. 3 Para. 4 Para. 2 a. Plants use chemicals to communicate with each other. b. Plants use sound to communicate. c. Talking plants have been a thing of myths and legends. d. The muddy court helped him to be creative and flexible. e. New research has revealed that plants can communicate with each other. Para. 5 f. Plants use the wood wide web to communicate. Para. 6 Scanning: Organise information from the passage and complete the diagram. P58 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 What is the secret of Plants ? 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 √ Read the passage and match each paragraph with its main idea. Para. 1 Para. 3 Para. 4 Para. 2 a. Plants use chemicals to communicate with each other. b. Plants use sound to communicate. c. Talking plants have been a thing of myths and legends. d. The muddy court helped him to be creative and flexible. e. New research has revealed that plants can communicate with each other. Para. 5 f. Plants use the wood wide web to communicate. Para. 6 Scanning: 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. √ part 1 structure Para1-2 part 2 part 3 Plants can communicate. Para3-5 Para 6 Plants have various ways to communicate. Scientists are learning more about plants’ language. Introduction and thesis statement main body conclusion exposition 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 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 Wood wide web ▲ (　　)2.In which way is the wood wide web similar to the Internet? A.Both can link all things in the system together. B.Both have the same communicating systems. C.Both bring convenience to people’s lives. D.Both need advanced science and technology. Careful reading A 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 ▲ (　　)3.What’s the main idea of the passage? A.Plants also have secrets. B.Plants can talk with animals and people. C.Plants need protecting urgently. D.Plants can communicate in their own way. Careful reading D Where can we find this passage? A. In an economic book B. In a history book C. On a scientific magazine D. In a novel Fast reading ▲ (　　)4.Where is the passage most likely to appear? A.In a newspaper advertisement. B.In a diary. C.In a science magazine. D.In a guidebook. C Careful reading 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 Learn more about moving plants 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 Lavf59.16.100 Packed by Bilibili XCoder v2.0.2 Lavf58.30.100 x264 0.128.2216+688+32 a17ff54 tMod [8-bit@4:2:0 X86] 23 Unit 5-3 英语选择性必修第一册 2019 Other 239323.3 $