Unit 5 Revealing the nature Developing ideas 课件-2024-2025学年高中英语外研版（2019）选择性必修第一册

Unit 5 Revealing nature 1 Enjoy the video and the plants. FREE TALK Have you seen Avatar? What plants in Avatar are you interested in? Do you believe that plants have the ability to communicate? Look at the pictures and tick what plants can do. Now talk about what else you think the plants can do and give examples. Plants Can Smell Plants Know What Time It Is Sensing Stranger Danger Sending Out An SOS Do you believe? So they can communicate? Look at the pictures and tick what plants can do. Plants can communicate with each other by using chemicals, sound and “wood wide web”. Vocabulary 1. root rooted take root be rooted in 练习：This tradition is also firmly rooted ________ the past. in adj. 根源在于；根深蒂固的 扎根；深入人心 根植于 7 Vocabulary 2. signal signal to sb. signal for sth. signal (to) sb. to do sth. a/the signal (for sb.) to do sth. send/give a signal receive/pick up a signal a danger/warning/distress signal traffic signals 练习：She signaled ________ Ted that she was moving forward. to 向某人示意 示意要某物 示意某人去做某事 要(某人)做某事的信号/示意 发出信号，示意 接收信号 危险/警告/遇难信号 交通信号灯 8 Vocabulary 3. link link...to/with... link sb./sth. together be linked to/with a/the link between...( and...) have strong links with... 练习：Is there a link ________ smoking and lung disease? between 把……与……联系/连接起来 把……联系/连接在一起 与……有关 (……与) ……之间的联系 和……关系牢固 9 Vocabulary 4. drive away drive...of drive...out drive down drive up drive sb.to do sth. drive sb.to/into... drive sb. home drive sb. crazy 练习：As we went forward, our joy was driven ___________ by horror. out 赶走…… 迫使……离开；使……消失 (迅速)压低，降低(价格、成本等) 抬高，迫使(价格、成本等)快速上升 迫使/促使某人做某事 迫使某人进入某状态 开车送某人回家 把某人逼疯 10 Vocabulary 5. communicate with communicate communication communicate by communicate sth. to sb. be in communication with sb. 练习：We communicated mostly ________ email. v. 交流，沟通 n. 交流，沟通 通过……方式交流 把某事传达给某人 与某人保持联络 by 11 Match the parts with the main ideas. ① Part 1 (Paras.1~2) _________________________ ② Part 2 (Paras.3~5) _________________________ ③ Part 3 Para.6) _____________________________ A. Different ways of communication plants using B. Scientists' new research about talking plants. C. Maybe one day we will know enough about plant communication to be able to "talk" with plants. B A C 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. Read the passage again and choose the best answers. ① Which one is the scientific new research? A. Plants can really talk with each other. B. Talking trees can give advice and warnings. C. Trees can talk with animals and people. D. Plants have the ability to communicate with each other. ② When will plants use chemicals to communicate with each other? A. When they feel thirsty. B. When they need fertilizer C. When they get threats from outer environment. D. When they hear noises and send signals to call for help. 13 Read the passage again and choose the best answers. ③ Which is the second method plants using to communicate mentioned in the passage? A. Send chemicals to call for help. B. Use sound to give signals to their neighbours. C. Link nearly all plants in a forest with webs. D. Contact each other to warn of threats. ④ 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 life. D. Both need advanced science and technology. 14 Read the passage again and choose the best answers. ③ Which is the second method plants using to communicate mentioned in the passage? A. Send chemicals to call for help. B. Use sound to give signals to their neighbours. C. Link nearly all plants in a forest with webs. D. Contact each other to warn of threats. ④ 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 life. D. Both need advanced science and technology. 15 Activity 3 Organise information from the passage and complete the diagram. answers: 1 communicate with each other 2 from the leaves 3 release its own，different chemicals 4 with their roots 5 tell if a neighbouring plant is helpful, or unfriendly 6 clicking noises when there is not enough water, indicating drought is arriving 7 the roots of different plants to each other 8 share information and even food 9 steal food from each other, or spread poisons What figure of speech is being used when the plants are described as calling for help? What is its function? Do you know of any artworks created mainly by technology? What does “wood wide web” mean? Think & share Personification. It can make descriptions more vivid. “Wood wide web” means an amazing system of communication that can link nearly every plant in a forest. It is linked underground by fungi and 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. What do you think 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? Think & share Passage 1 reveals the discovery of evolution and Passage 2 reveals the discovery of communication between plants. They all reflect that there are numerous secrets in nature that remain to be explored. On each stem are two leaves, which are long and narrow with a waxy texture. 完全倒装 完全倒装就是将谓语动词全部置于主语之前，主要有以下几种情况： (1) 表示地点的介词短语+不及物动词/系动词 be+主语(名词) In a lecture hall of a university in England sits a professor. 在英国一所大学的讲堂里坐着一位教授。 By the window stood a young fellow with a badge in his hand 窗边站着一个年轻人，他的手里拿着一枚徽章。 (2) 作表语的形容词/分词短语+系动词be +主语(名词) Present at the party are several composers and geologists. 出席宴会的是几位作曲家和地质学家。 Growing all over the mountain are wild flowers. 漫山遍野都是野花。 (3) 表示方位/地点/时间的副词(in，out，down，up，off，away，here，there，now，then等)+不及物动词/系动词be +主语(名词) Down came the rain and up went the umbrellas. 下雨了，伞都撑起来了。 Here comes the bus. 公共汽车来了。 完全倒装 在完全倒装句中，谓语动词的数要与后面主语的数保持一致。 房前有两棵高树： In front of the house stands two tall trees. (×) In front of the house stand two tall trees. (√) Activity 4 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? Activity 4 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. Activity 5 Read the observational journal and answer the questions. How were the daffodil bulbs planted? In what environment did the leaves grow? 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. Activity 6 Read the observational journal and answer the questions. (1) Work in pairs. Look at the pictures and talk about how the sunflower grows. (2) Write your observational journal about the sunflower. Now write your observational journal about the sunflower. 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 How to write the observational journal 日志——日期、格式 Sample 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 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. 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. Exercise 1．Tom felt that he himself, rather than the girls, ________for the failure of the football match. A．were to blame B．was to blame C．were to blamed D．was to be blamed 2．When I was introduced to Mr. Griffin, I got a feeling that I ______ him somewhere before. A．have met B．met C．had met D．would meet 3．Humans are incomparable to all creatures because created by God, yet it‘s the ______ use of language that distinguish man from the other animals. A．primitive B．superior C．professional D．intimate 31 Exercise 4．Having read the advertisement for the qualified employees, a great many ______answered the call. A．ancestors B．applicants C．operators D．boarders 5．The researchers estimated that the glacier ______ in size since last year. A．had decreased B．have decreased C．decreased D．had been decreased 6．The film was so moving that we all burst into tears. Never before seen a film like that. A．had I B．I had C．have I D．I have 32 Exercise 7．Linda couldn’t have answered the question so easily if she ________ a few books on world history before hand. A．hadn’t read B．hasn’t read C．wouldn’t have read D．didn’t read 8．By the end of 2015, he __________in NBA for 14 years. A．plays B．played C．has played D．had played 9．She asked the police why no one ________ her about it. A．told B．has told C．tells D．had told 10．By the end of last week,600 people from 50 countries to attend the meeting，with nearly half coming from the United States，Germany and Britain. A．had registered B．have registered C．registered D．were registered 33 Homework Complete your composition. Complete the reflection section. 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