Unit5 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

Unit 5 Revealing nature Developing ideas 1 Lead in What can we human do? For example, we can walk, we can talk, we can breathe… Can plants do these? ( ) attack ( ) move ( ) breathe ( ) speak ( ) eat ( ) steal ( ) sleep ( ) think Look at the pictures and talk about what plants can do. Plants do behave. Can plants talk to each other? New research: It appears that plants can communicate after all. Read the passage and find out the ways in which plants communicate. The Secret Language of Plants Pre-reading A. Narrative B. Exposition C. Argumentation What is the genre of this passage? What is the passage most likely to be taken from? A scientific magazine A guide book A fiction story What is the writer’s purpose in writing the passage? To introduce the ways plants communicate with each other. To compare the differences between plants and humans. To predict where technology will take plants. While-reading：Read for structure Part 1 Introduction Part 2 Body Part 3 Conclusion Para. 1 Plants can communicate. (The thesis statemnet) Plants have various ways to communicate. (chemicals, sound, www) Para. 2 Para. 3 Para. 4 Para. 5 Para. 6 Scientists are learning more about plants’ language. (restate the thesis statement) While-reading：Read for details Para. 1-2: Introduction Para.1 Talking plants have long been 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__________________. advice and warnings animals and people Avatar Alexander the Great Marco Polo Which of the following is the function of paragraph 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. Para 2. is used to clearly illustrate the thesis statement. It’s also a transitional paragraph. Para. 3: Using chemicals chemicals a bean plant attack insects another bean plant release release detect different chemicals attract wasp kill kill drive away Why do scientists do research on this plant warning system? To explore the wonders of nature To apply it into agriculture To protect plants To predict the future of plants Enjoy the sentence This is like a warning, or a call for help: “I’m being attacked！” Which figure of speech is being used? 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. Use personification to rewrite the sentences. 1. When the plant is attacked by insects, it will quickly convey the message to his neighbors. 2. When the tree lacks water inside, it will make a noise to attract attention. “Feeling” the pain caused by insects, the plant “tells” this message to its neighbors. When the tree is thirsty, it will “shout” to get noticed. “Feeling” the pain caused by insects, the plant shouts “I am being attacked” to let its neighbors know. Para. 4: Using sound Some plants make noises ____________________________. A chill plant can _______________________________________. Some trees make________________________________________ _____________________________________________________. with their roots tell if a neighboring plant is helpful, or unfriendly clicking noises when there is not enough water, indicating drought is arriving Para. 5: Using the “Wood Wide Web” “Wood Wide Web” refers to an amazing system of communication that can link nearly every plant in a forest. What does “Wood Wide Web” mean? World Wide Web Wood Wide Web system for communication among ________on earth. communication among ________in the forest. how is it linked a worldwide network of computers linked by ____________________. the wood wide web is linked underground by______, which links the roots of__________________ to each other. enable to do communicate, entertain and shop by network. share ________________________ with each other. cybercrime 1. cheat someone out of his money or information. 2. spread computer virus to attack others’ computer. 1. steal_______from each other 2. spread_________to attack ___________. humans plants cables and satellites fungi different plants information and even food food poison other plants The differences between “World Wide Web” and “Wood Wide Web” Para. 5: Conclusion According to Para. 6, what is the writer’s attitude towards the scientific research on the secret language of plants? A. Positive B. Negative C. Neutral D. Indifferent What is the function of Para.6? It is a conclusion and a restatement of the thesis statement. It also raises an expectation about future research of plant communication. Organise information from the passage and complete the diagram. communicate with each other from the leaves release its own, different chemicals with their roots tell if a neighbouring plant is helpful, or unfriendly clicking noises to indicate drought's coming the roots of different plants share information and even food steal food from each other or spread poisons Introduction Explanation 1 Explanation 2 Explanation 3 Conclusion Post-reading What are the benefits of studying plant communication？ What discoveries are described in the two reading passages in this unit and what do their meanings have in common? People can have a better understanding of plants and explore more about the mysterious plants. People can make better use of plants for the benefit of mankind. People can better protect nature and live in harmony with nature. What are the benefits of studying plant communication？ What discoveries are described in the two reading passages in this unit? What do their meanings have in common? Passage 1 reveals the secret of evolution. Passage 2 reveals the secret of communication between plants. They all reflect that there are numerous secrets in nature that are waiting to be explored. Work in groups Give a talk about communication between living things. 1 Read the passage again and talk about how plants communicate. 2 Think about and discuss the following ways of communication in the animal world. 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? Work in groups Give a talk about communication between living things. 3 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. 4 Give a talk to the class about communication between living things. Language points Many cultures have stories of talking trees that give advice as well as warnings to people. 许多文化都有会说话的树的故事, 它们给人们提供建议和警示。 as well as 也; 和……一样; 不但……而且 【语块积累】 as well 　　　　 adv. 也, 还有 as good as 和……几乎一样, 实际上等于…… as far as adv. 至于, 直到, 远到; 就……而言 as long as 只要; 和……一样长 as soon as 一……就 Language points With us long believing that talking plants are fantasy, new research has revealed something amazing: it appears that plants can communicate after all.  长久以来, 我们一直认为会说话的植物是幻想, 而最新的研究揭示了一些令人惊奇的事情: 植物似乎可以交流。 【句式解构】 　　本句为主从复合句。句中With us long believing that是with引导的复合结构作状语, 第一个that引导的是宾语从句, 第二个that 引导的是主语从句, it 是形式主语。 You have no idea how she finished the relay race with her foot wounded so much. The old couple often take a walk after supper in a park with their pet dog following them. Language points It has been known for some time that plants use chemicals to communicate with each other. 人们早已知晓植物之间使用化学物质进行交流。 【句式解构】 　　本句为主从复合句。句中It为形式主语; that引导的是主语从句。 It was obvious that the manager of the coffee shop was waiting for Li Fang to leave. It is said that Chinese people are living for others, while the Americans are for themselves. 常见的it作形式主语 (1)it作形式主语, 真正的主语是后面that引导的主语从句, 常见的有: ①It+be+形容词(possible, strange, natural, important. . . ) +that从句 ②It+be+过去分词(said, thought, believed, supposed, reported. . . ) +that从句 ③It+不及物动词(seems, occurs, happens. . . ) +that从句 ④It+be+名词词组(a pity, an honour, no wonder) +that从句 Language points This is like a warning, or a call for help. 这就像一个警告, 或者一个求助电话。 call for 需要; 要求 【语块积累】 call for　　　　需要; 要求; 去接某人 call in 顺便拜访; 请人来帮忙; 电话通知 call off 取消 call on/upon 呼吁; 号召 call out 喊叫 call up 使想起, 使回忆起 【即学活用】 (1)语法填空。 ①The trip to Italy might be called ___. ②The film called ___ memories of my little brother. (2)I often ______on him at the weekend.   我经常在周末去看他。 (3)Some groups are _________the release of political prisoners in that country. 那个国家的一些团体要求释放那些政治犯。  off up call in calling for Language points Some of these chemicals drive insects away. 其中一些化学物质可以驱赶昆虫。 drive away 驱赶走 【语块积累】 drive 　　　　 v. & n. 驾驶 drive sb. to 开车送某人去…… drive down to 开车去 drive out of 驱赶出 drive. . . off/away 驱赶走 drive on 开车继续赶路 driving license n. 驾驶执照 driving test n. 驾驶执照考试 Language points It is in some ways similar to the Internet we use. 它在某些方面类似于我们使用的互联网。 in some ways 在某些方面; 在某种程度上 【语块积累】 all the way 总是; 一直 on the/one’s way 在……路上 by the way 顺便 no way 没门, 不可能 in the way 挡道; 妨碍 make one’s way 前进 in this/that way 以……方式 in no way 决不 have a long way to go 有很长的路要走 in a way/ in one way/ in some way/ways 在某种程度上 【即学活用】 (1)Jane’s grandmother had wanted to write a children’s book for many years, but one thing or another always got _________.   简的祖母多年来一直想写一本儿童读物, 但总是遇到这样或那样的障碍。 (2)The obstacles facing him today are ____________as big as ever.   他如今所面对的障碍, 在某些方面和以往一样大。 (3) We got there by driving slow __________.   我们开着车去了那里, 一路上开得很慢。 (4) _________am I going to adopt any of his methods.   我绝对不会采纳他的任何方法。 in the way in some ways all the way In no way Language points But just like our own Internet, the wood wide web has its own version of “cybercrime”. 但就像我们自己的互联网一样, 树维网也有自己的“网络犯罪”版本。 one’s own某人自己的 【语块积累】 own 　　　　　　　　vt. 拥有 pron. 属于自己的 on/by one’s own 独自, 靠自己　 of one’s own 属于某人自己的 come into one’s own 获得应有的荣誉、承认、名声等 hold one’s own(against sb. /sth. ) 坚守立场; 不被击败 【即学活用】 (1)It is estimated that 40% of high school students _____________mobile phones.   据估计, 40%的高中生有自己的手机。 (2)Look at all ____________as if you just bought or received them today.   对待你所拥有的一切, 就像你今天刚刚买到或收到的一样。 have their own that you own Writing an observational journal Read the observational journal and answer the questions. 1　How were the daffodil bulbs planted? 2　In what environment did the leaves grow? 3　What do the flowers look like? 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. Work in pairs. Look at the pictures and talk about how the sunflower grows. Now write your observational journal about the sunflower. One possible version: 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, the disc florets bloom across the core of the sunflower blossom. It is yellow, looking beautiful. 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. Choose one nature documentary you like and complete the notes. Title : ____________________________________________________ Main theme: _______________________________________________ Reasons you recommend it :__________________________________ _________________________________________________________ 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. Review language points. Write your observational journal about the sunflower. THANKS FOR WATCHING Lavf58.29.100 Bilibili VXCode Swarm Transcoder v0.7.32 $