Unit5 Revealing Nature-Developing ideas（ppt课件）--2023新外研版（2019）《高中英语》选择性必修第一册.pptx

1、R e v e a l i n g N a t u r eB i o d i v e r s i t yActivity 81.What species are mentioned and what is special about them?Two species are mentioned:the blue whale and the water bear.The blue whale is the largest animal species on Earth,which can grow up to almost 30 metres in length and weigh over 1

2、30,000 kilos.The water bear is probably the toughest species,which can survive temperatures from 150C to a below freezing-272C.2.What other unusual life forms do you know of?words&expressionsU5被宣告灭绝归咎于处于隔离隔绝状态为.而竞争特别地blameblame their extinction _ humans=blame humans on their extinction You are _ bla

3、me.Why do I always get the blame for everything that goes wrong?Museums must compete _45_ peoples spare time and money with other amusement.(2020山东高考)words&expressionsU5对.有害击退所有的病菌由.构成说到这个是.的家园对比之下达到在长度上体重超过等待被探索biodiversityspeciesbacteriagermdigestionimmune systemorganic matterActivity 9 1.is home

4、to2.are native to3.scientific4.habitats5.ecosystem6.appearance7.primitive8.ancestorComplete the paragraphs with the correct form of the words and expressions in the box.words&expressionsU5be renowned forbe native tocarry outserve as habitats(inhabitant n.)there is evidence that因.而闻名原产于实施，执行充当，担当栖息地有

5、证据表明The Secret Language of PlantsUnit 5 Revealing natureDeveloping ideasActivity 1 Now talk about what else you think the plants can do and give Now talk about what else you think the plants can do and give examples.examples.Look at the pictures and tick what plants can Look at the pictures and tick

6、 what plants can do.do.pattackpbreathepeatpsleeppmovepspeakpstealpthinkWhats the genre of the passage?1怎么理解概要？怎么理解概要？2评卷老师怎么评？评卷老师怎么评？1 1、本题总分为、本题总分为2525分，按分，按5 5个档次给分。个档次给分。2 2、词数少于、词数少于4040的和多于的和多于8080的，从总分中减去的，从总分中减去2 2分。分。3 3、拼写与标点符号是语言准确性的一个重要方面，评、拼写与标点符号是语言准确性的一个重要方面，评分时，应视其对于交际的影响程度予以考虑。分时，应视

7、其对于交际的影响程度予以考虑。4 4、如书写较差以致影响交际，可将分数降低一个档次、如书写较差以致影响交际，可将分数降低一个档次评分原则评分原则5 5、评分时，应主要从以下四个方面考虑：、评分时，应主要从以下四个方面考虑：(1)(1)对原文要点的理解和呈现情况；对原文要点的理解和呈现情况；(2)(2)应用语法结构和词汇的准确性；应用语法结构和词汇的准确性；(3)(3)上下文的连贯性上下文的连贯性(逻辑关系逻辑关系)；(4)(4)对各要点表达的独立性情况；对各要点表达的独立性情况；评分原则评分原则3考生怎么写概要？考生怎么写概要？概要怎么写？概要怎么写？一、从文体入手，分析文章结构，准确把握要点

8、一、从文体入手，分析文章结构，准确把握要点 注意区分事实和观点、重要和次要、普遍与特殊、相关与不相关、原因和结果等逻辑关系。1.记叙文：把握六要素who,when,what(event事件),how(process过程),why 2.议论文：表明论点、论据、结论 3.说明文：the topic-what,the reasons-why,the effects-how,the solutions(解决办法),the conclusion(结论)Create a mind-map of the passage They may communicate with each other by usin

9、g chemicals,sound and“wood wide web”.Whats the main point(topic)of the passage?It appears that plants can communicate after all.概要怎么写？概要怎么写？二、明话题，定顺序，找中心句、高频词、连词，列提纲二、明话题，定顺序，找中心句、高频词、连词，列提纲 根据文章写作顺序(时间、地点、原因),对文章进行分段，找出各段的中心句和高频词以确定要点，再根据连词确定要点的主要和次要关系。最后根据抄写原文列出提纲。二.确定要点：三.重组要点：四.连句成篇：概要怎么写？概要怎么写？

10、1.要点一：2.要点二：1.要点：2.要点：一.明确话题：第二节：概要写作第二节：概要写作 1.涵盖所有要点（主要点+分要点）2.无语法错误 3.有适当的连词，逻辑关系合理 4.杜绝抄袭文中原句 5.用第三人称 6.客观：无个人观点，不写文中没有的句子 7.准确：体裁，时态，顺序 8.简洁：措词，避免重复1 Talking plants have long been a thing of myths and legends.Many cultures have stories of talking trees that give advice _（=besides）warnings to pe

11、ople.Alexander the Great and Marco Polo were said to_(visit)such a tree in India.And in some modern stories,such as the movie Avatar,trees can communicate with animals and people.2 _ us long believing that talking plants are fantasy,new research has revealed()something amazing:_(似乎)plants can commun

12、icate after all().as well as have visitedWith揭示it appears that终究会说话的植物一直是神话传说中的一大元素长期相信 long adv.3 It has been known for some time _ plants use chemicals to communicate with each other.This happens when a plant,say()a bean plant,gets _(attack)by insects.The plant releases tiny amounts of chemicals()

13、from the leaves that are _(eat).This is like a warning,or a call for help:“Im _(attack)!”When another bean plant _(察觉；侦查）the chemicals from its injured neighbour,it starts to release its own,different chemicals.Some of these chemicals _(赶走昆虫).Others attract insects the wasps!The wasps kill the insec

14、ts _ 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.()that比方说attacked释放微量的化学物质being eatenbeing attackeddetectsdrive insects awaythat杀虫剂4 More _(surprise),plants also use sound to communicate.People cant

15、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 wat

16、er,_(indicate)drought is arriving.surprisingly知道，判断indicating5 Most surprisingly of all,plants have an amazing system of communication _ 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._(表对比）the Internet is a

17、worldwide network of computers _(link)by cables and satellites,the wood wide web is linked underground by fungi.This fungal network links the roots of different plants _ each other.that木联网Whilelinkedto5 _(use)the wood wide web,plants can share information and even food _ each other.For example,some

18、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 _each other,or spread poisons()to attack other plants.Perhaps one day scientists will learn how to create a“firewall”to help _(

19、prevent)these attacks within the wood wide web.Usingwith自己的网络犯罪版本from有毒物质prevent6 Scientists are learning more every day about the secret ways _ plants talk to each other.Who knows?Maybe one day we will know enough about plant communication _(be)able to“talk”with them _(us).in whichto beourselves2.f

20、rom the leaves2.from the leaves3.release its own,3.release its own,different different chemicalschemicals4.with their roots4.with their roots5.tell if a neighbouring 5.tell if a neighbouring plant is helpful,or plant is helpful,or unfriendlyunfriendly6.clicking noises when there 6.clicking noises wh

21、en there is not enough water,is not enough water,indicating drought is indicating drought is arriving.arriving.7.the roots of different 7.the roots of different plants to each otherplants to each other8.share 8.share information and information and even foodeven food9.steal food from 9.steal food fr

22、om each other,or spread each other,or spread poisonspoisonscommunicate with each othercommunicate with each otherThink&Share1 What figure of speech is being used when the plants are described as calling for help?What is its function?2 What does“wood wide web”mean?1.Personification.It can make descri

23、ptions more vivid.2.“wood wide web”refers to 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

24、with each other.Think&Share3 What do you think are the benefits of studying plant communication?4 What secrets do the two reading passages in this unit reveal and what do they have in common?3.It will help us know more about the world of plants and then get a better understanding of the secret of na

25、ture and encourage us to explore more about the mysterious nature.Whats 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.4.Passage 1 reveals the secret of evolution and Passage 2 reveals the secret o

26、f communication between plants.They all reflect that there are numerous secrets in nature that are waiting to be explored.Activity 4 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.What other ways can yo

27、u think of?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.3 Organise your ideas following the steps below.Begin with what living things you have chosen to talk a

28、bout.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.Work in groups.Now talk about how well you contributed to your group discussion and help each other to make improve

29、ments.Activity 5Read the observational journal and answer the questions.1.1.How were the daffodil bulbs planted?How were the daffodil bulbs planted?They were planted side by side in soil with the pointed ends facing up.2.In what environment did the leaves grow?2.In what environment did the leaves gr

30、ow?The leaves grew in a sunny,but cool place.3.What do the flowers look like?3.What do the flowers look like?The flowers are yellow and white,and shaped like trumpets.Activity 6 Work in pairs.Look at the pictures and talk about how Look at the pictures and talk about how the sunflower grows.the sunf

31、lower grows.Write your observational journal about the sunflower.Write your observational journal about the sunflower.Activity 7Work in pairs.Make improvements to each others observational journals and share them with the class.An observational journal about the sunflowerAn observational journal abo

32、ut the sunflower1 JuneGermination（使发芽）Covered with 1/2 cm of moist soil,the sunflower seed takes five to 12 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 thefirst leaves to push to th

33、e soil surface.6 JulyGrowthThe root continues to grow downward.The single stem grows hollow and smooth,revealing large spade-shaped leaves from the growing tip.Gradually,the plants growing tip reveals the first hints of development of the flower bud.Theplant stem becomes more woody.26 JulyFloweringA

34、bout three weeks after the flower bud first becomes visible at the tip of the sunflower stem,it enlarges and begins to reveal a flattened disk.Over the course of one week,the yellow ray florets,the disk florets bloom across the core of the sunflower blossom.It is yellow,looking beautiful.1.看起来像七彩浮云2.点亮，照亮3.和.互动4.通过艺术表达想法5.各种各样的工具6.被称为7.而不是8.被看作两个截然不同的东西9.技术进步10.导致.的结合11.变得更容易获得12.以.为例13.很少展出14.排6个小时的队感 谢 观 看 谢 谢！Graduation thesis and graduation thesis Graduation thesis and graduation thesis汇报人：小熊