Unit 5 Section Ⅲ（课件PPT）-【精讲精练】2026-2027学年高中英语选择性必修第一册（外研版）

该高中英语课件围绕“植物交流的秘密”展开，通过神话传说（如会说话的树、《阿凡达》）引入主题，过渡到植物利用化学物质、声音及“植物万维网”交流的科学发现，辅以词汇积累、语法解析（如“it作形式主语”“with复合结构”）构建学习支架。 其亮点在于结合语篇理解题培养信息提取与逻辑分析的思维品质，通过核心词汇（如“link”“drive away”）拓展及句型演练提升语言能力，写作微练提供自然描写词汇与句型助力学习能力。学生能在语言学习中增强科学认知，教师可依托系统资源高效开展教学。

Section Ⅲ　Developing ideas & Presenting ideas UNIT 5　Revealing nature 栏目导航 UNIT 5　Revealing nature 1 栏目导航 读文清障•篇章助读 01 基础梳理•新知落实 02 语篇理解•要点领悟 03 核心知识•关键能力 04 随堂演练•巩固提升 05 课时作业•知能达标 07 进阶提升•写作微练 06 栏目导航 UNIT 5　Revealing nature 1 读文清障•篇章助读 栏目导航 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 基础梳理•新知落实 栏目导航 栏目导航 UNIT 5　Revealing nature 1 root link centimetre legend detect 栏目导航 UNIT 5　Revealing nature 1 as well as communicate with sb tiny amounts of drive away in some ways be similar to 栏目导航 UNIT 5　Revealing nature 1 were said to have visited With us long believing 栏目导航 UNIT 5　Revealing nature 1 It has been known for some time that the secret ways in which plants talk to each other 栏目导航 UNIT 5　Revealing nature 1 语篇理解•要点领悟 栏目导航 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 核心知识•关键能力 栏目导航 栏目导航 UNIT 5　Revealing nature 1     栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 have been a huge amount of/a large amount of /large amounts of information 栏目导航 UNIT 5　Revealing nature 1 amount to anything 栏目导航 UNIT 5　Revealing nature 1     栏目导航 UNIT 5　Revealing nature 1 off to come which drove her crazy 栏目导航 UNIT 5　Revealing nature 1     栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 to/with are closely linked with/to their study habits and dedication to learning 栏目导航 UNIT 5　Revealing nature 1 there was a close link between my grandmother's cooking skills and her love for the family 栏目导航 UNIT 5　Revealing nature 1     栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 to form to have invented to have come 栏目导航 UNIT 5　Revealing nature 1 Chinese paper-cutting is believed to have a history of It is believed that Chinese paper-cutting has a history of 栏目导航 UNIT 5　Revealing nature 1 随堂演练•巩固提升 栏目导航 栏目导航 UNIT 5　Revealing nature 1 give advice as well as warnings to people after all get attacked by release tiny amounts of chemicals a call for help warning system 栏目导航 UNIT 5　Revealing nature 1 make a noise most surprisingly of all pine tree steal sth from 栏目导航 UNIT 5　Revealing nature 1 root myth centimetres 栏目导航 UNIT 5　Revealing nature 1 is reported to have struck has been linked with/to 栏目导航 UNIT 5　Revealing nature 1 进阶提升•写作微练 栏目导航 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 Many plants have chemical defenses，some of which produce chemicals that taste bitter or cause an unpleasant reaction. Ants communicate with each other through touch，chemical signals，moving their bodies and even using their legs to make sounds. 栏目导航 UNIT 5　Revealing nature 1 课时作业•知能达标 栏目导航 点击进入WORD 栏目导航 UNIT 5　Revealing nature 1 谢谢观看 栏目导航 UNIT 5　Revealing nature 1 The Secret Language of Plants Talking plants have long been a thing of myths① and legends②.Many cultures have stories of talking trees that give advice as well as③ warnings to people.[1]Alexander the Great④ 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. [1]此处为“主语＋be＋said＋不定式”句型。 [2]With us long believing that talking plants are fantasy⑤，new research has revealed⑥ something amazing：[3]it appears that plants can communicate after all． [2]此处为with复合结构，其中that引导宾语从句，作believing的宾语。 [3]本句中的it作句子的主语，无实际意义。appears是系动词，其后的that则引导一个表语从句。 [4]It has been known for some time that plants use chemicals⑦ to communicate with each other. This happens when a plant，say a bean plant，gets attacked by insects.The plant releases⑧ 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 detects⑨ the chemicals from its injured neighbour，it starts to release its own，different chemicals.Some of these chemicals drive insects away⑩.Others attract insects—the wasps⑪！ The wasps kill the insects that are eating the bean plants.Scientists hope to learn more about this plant warning system，[5]so that we can use it to grow crops without pesticides． [4]本句中的It在句中作形式主语，真正的主语是后面由that引导的从句。 [5]此处so that引导目的状语从句。 More surprisingly⑫，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 chilli⑬ plants do this.They also “listen” to the noises from other plants.A chilli plant can tell⑭ if a neighbouring⑮ plant is helpful，or unfriendly.Some trees make clicking noises [6]when there is not enough water，indicating⑯ drought is arriving． [6]此处when引导时间状语从句，意为“当……时”；indicating...arriving是现在分词短语作伴随状语。 Most surprisingly of all，plants have an amazing system of communication that can link⑰ nearly every plant in a forest.Scientists call this system the “wood wide web”．It is in some ways⑱ similar to the Internet we use.[7]While the Internet is a worldwide network of computers linked by cables and satellites, the wood wide web is linked underground⑲ by fungi⑳.This fungal network links the roots of different plants to each other.[8]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 version㉑ of “cybercrime㉒”．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. [7]此处While为并列连词，表示对比关系，意为“而，然而”。 [8]此处是现在分词短语作方式状语。 Scientists are learning more every day about the secret ways [9]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. [9]此处为“介词＋关系代词”引导的定语从句，其中介词in由先行词ways的搭配决定。 ①myth n.[C，U](古代的)神话；虚构的东西 ②legend n.[C，U]传说，传奇(故事) legendary adj.传说的；非常著名的 ③as well as 也，还(常用于连接两个并列的成分) ④Alexander the Great 亚历山大大帝 [文化常识]　人们通常在西方国家的君王名称后面加其他名词来显示人们对其功绩或为人的评价。例如狮心王理查(Richard the Lionheart)，征服者威廉(William the Conqueror)。 ⑤fantasy n.[U]幻想，想象 ⑥reveal vt.显示；透露；揭示 reveal the truth/the secret揭露真相/泄露秘密 ⑦chemical n.[C]化学制品，化学品adj.化学的 chemistry n.[U]化学 chemist n.[C]化学家 ⑧release vt.释放 ⑨detect v.发现，察觉(尤指不易觉察到的事物) detective n.[C]侦探 ⑩drive away使离去 [拓展]　give away分发；赠送 break away逃脱 ⑪wasp n.[C]黄蜂 ⑫more surprisingly更令人吃惊的是(常用在句首，用于修饰全句) ⑬chilli n.[C，U]辣椒 ⑭tell vt.[熟词生义]分辨，识别 tell A from B 辨别A和B tell the difference between A and B分辨出A与B的区别 ⑮neighbouring adj.邻近的，附近的，毗邻的 ⑯indicate vt.& vi.表明，显示 indication n.[C，U]显示，表明，标示 ⑰link v.把……联系起来；连接 link...to/with...把……和……连接/联系起来 ⑱in some ways在某种程度上 ⑲underground adv.在地下 adj.地下的 ⑳fungus n.[C]真菌(复数fungi) fungal adj.真菌的；真菌引起的 ㉑version n.[C]形式；变种；版本 ㉒cybercrime n.[C，U]网络犯罪 [构词法]　前缀cyber-意为“计算机的，网络的”，常置于名词和形容词前。由其构成的词还有cybersecurity(网络安全)，cyberthreat(网络威胁) 等。 植物密语 会说话的植物长久以来都是神话和传说里的事情。许多文化里都有会说话的树给人们警告和建议的故事。据说，亚历山大大帝和马可·波罗曾在印度见过这样一棵树。而且在一些现代故事中，像电影《阿凡达》，树木可以与动物和人交流。 我们一直认为会说话的植物只存在于幻想之中，但新的研究有了惊人的发现：植物间似乎确实可以交流。 人们知道植物使用化学物质相互交流已经有一段时间了。当某种植物(比如豆类植物)受到昆虫侵害的时候就会这样做。(受侵害的)植株从正被啃食的叶子中释放出微量的化学物质，就像是发出警告或者呼救：“我被攻击了！”另一株豆类植物察觉到附近受伤植株释放出的化学物质时，它便开始释放自身不同的化学物质。其中一些化学物质把昆虫驱走，另一些则会吸引昆虫——黄蜂！黄蜂会杀死正啃食豆类植株的昆虫。科学家希望能进一步了解这种植物警报系统，这样我们就可以利用其种植农作物，而不使用农药。 更令人惊讶的是，植物也会用声音交流。虽然人类无法听到，但是植物确实在发出声音。有些植物用根部发出响声，玉米和辣椒就是如此。它们还会“倾听”其他植物发出的声音。辣椒可以分辨出邻近的植物是敌是友。一些树在没有足够的水分时，会发出咔嗒声以示干旱即将来临。 最令人惊讶的是，植物之间有一个惊人的交流系统，该交流系统可以把森林里几乎每一株植物联系起来。科学家称该系统为“植物万维网”。它在某种程度上与我们使用的互联网相似。互联网是由电缆和卫星连接起来的全球计算机网络，而植物万维网是由真菌在地下连接而成的。这个真菌网络将不同植物的根系相互连接了起来。通过植物万维网，植物可以相互分享信息甚至食物。例如，一些松树能够给松树幼苗输送养分， 帮助它们生长。不过就像我们的互联网一样，植物万维网也有自己版本的“网络犯罪”。植物间会互相窃取食物，或者传播毒素以攻击其他植物。也许有一天，科学家将学会如何建造“防火墙”来帮助阻止植物万维网内部的攻击。 科学家对于植物互相交流的秘密方式的认识与日俱增。谁知道呢？也许有一天，我们对植物交流有了足够的了解，便能够亲自与它们“交谈”。 Ⅰ.重点词汇 核心单词 1．____ n.根 2．____ v.把……联系起来；连接 3．__________ n.厘米 拓展单词 4．______ n.传说，传奇(故事) →legendary adj.传说的；非常著名的 5．______ v.发现，察觉(尤指不易觉察到的事物) →detection n.发现，察觉，侦察→detective n.侦探 Ⅱ.重点短语 1．__________ 不但……而且……；既……又……；除了…… 2．___________________ 与某人交流 3．_______________ 微量的 4．__________ 驱走；驶离 5．____________ 在某些方面 6．_____________ 与……相似 Ⅲ.重点句式 1．sb/sth be said to do...“据说……” Alexander the Great and Marco Polo _________________________ (据说见过) such a tree in India. 2．with复合结构 ______________________ (我们一直认为) that talking plants are fantasy，new research has revealed something amazing：it appears that plants can communicate after all. 3．it作形式主语 ____________________________________ (人们已经知道……有一段时间了) plants use chemicals to communicate with each other. 4．the way＋定语从句 Scientists are learning more every day about ____________________ ______________________________ (植物相互交流的秘密方式). Read the text carefully and then choose the best answer. 1．What's mainly talked about in the passage? A．Scientists find plants can “talk” with each other. B．Scientists find plants can “talk” with people. C．Scientists aren't sure whether plants can “talk”． D．Scientists can use the secret language of plants. 2．How can bean plants communicate? A．Through calling for help. B．Through driving insects away. C．Through making special sounds. D．Through releasing chemicals. 3．What can we learn about chilli plants? A．They can make noises as well as hearing noises from other plants. B．They can detect the chemicals from the neighbours and make sounds. C．They have been used by scientists to observe the state of the water. D．They use sounds that can be heard by people to communicate. 4．What is paragraph 5 mainly about? A．An incredible communication system of plants. B．The formation of the “wood wide web”． C．The advantages and disadvantages of the “wood wide web”． D．The “firewall” created by scientists for plants. 答案　1—4　ADAA [核心词汇·练透] tiny amounts of　微量的 (1)a large/small amount of　大/少量的 large/small amounts of　大/少量的 in large amounts　大量地 (2)amount to　合计；共计；等同于，意味着 [教材原句]The plant releases tiny amounts of chemicals from the leaves that are being eaten. (受侵害的)植株从正被啃食的叶子中释放出微量的化学物质。 [练通]——单句语法填空/ 补全句子/ 完成句子 (1)It is reported that huge amounts of money _________ (be)used to protect the endangered species in this area. (2)One of the greatest advantages of the Internet lies in the quick and easy access to __________________________________________________ (大量信息). (3)俗话说，“懒惰的人在生活中将一事无成。”因此，如果我们想要在生活中取得成功，努力和坚持是很重要的。 As the old saying goes，“Lazy people will not __________________ in life.” So，it's important to work hard and persevere if we want to achieve success in our lives.(续写佳句之主旨升华) [温馨提示]　an amount (of)，amounts (of) 作主语或其修饰的名词作主语时，谓语动词的数常根据amount的单复数而定。 drive...away　把……赶走 drive off　驱车离去；驶去 drive...out　迫使……离开 drive sb to/into...　迫使某人进入某状态 drive sb to do sth　迫使某人做某事 drive sb crazy/mad　使某人发疯/发狂 [教材原句]Some of these chemicals drive insects away. 其中一些化学物质把昆虫驱走。 [练通]——单句语法填空/ 完成句子 (1)I watched several friends go by，get into their cars and drive ___ without even acknowledging my presence. (2)His passion for traditional Chinese culture drove him________ (come) to China in 2024. (3)班上的孩子们经常取笑她，这简直让她发疯。 The children in the class often made fun of her，___________________． (续写佳句之情绪描写) link v.把……联系起来；连接 n.联系；关联 (1)link...to/with...　将……和……连接/联系起来 be linked to/with...　与……有联系 (2)a link with...　与……的联系 a link between...and...　……和……之间的联系 [教材原句]Most surprisingly of all，plants have an amazing system of communication that can link nearly every plant in a forest. 最令人惊讶的是，植物之间有一个惊人的交流系统，该交流系统可以把森林里几乎每一株植物联系起来。 [练通]——单句语法填空/ 完成句子 (1)The new bridge being built now will link the island _______ the mainland，providing a vital transportation connection for the residents. (2)不可否认，学生的学业成绩与他们的学习习惯和学习投入密切相关。 There is no denying that a student's academic achievements _____________________________________________________________． (3)我认识到我奶奶的厨艺和她对家人的爱之间有着紧密的联系。 I came to realise ____________________________________________ _____________________________________．(续写佳句之感情描写) [温馨提示]　与link...to/with...类似的表达还有： join...to...把……与……连接起来；connect...with/to...把……与……连接起来； associate...with...把……与……联系在一起；relate...to...把……与……联系起来 [重点句型·通关] “sb/sth be said to do...”意为“据说……” (1)“sb/sth be said to do...”可改写为：“It is said that...”或“People say that...”。该句型中不定式根据需要有时态和语态的变化，即： sb/sth＋be＋said＋ (2)常用于该句型的过去分词还有：thought，believed，suggested，known，reported等。 [教材原句]Alexander the Great and Marco Polo were said to have visited such a tree in India. 据说，亚历山大大帝和马可·波罗曾在印度见过一棵这样的树。 [练通]——单句语法填空/ 一句多译 (1)I discovered that tai chi is deeply rooted in the Chinese philosophy of yin and yang，which are believed _______ (form) the unity of opposites. (2)Thomas Edison was considered ________________(invent) the bulb，which benefits people greatly. (3)The English language is full of idioms which are thought ____________ (come) from football. (4)人们认为中国剪纸在中国有1 500多年的历史。 ①____________________________________________________ more than 1，500 years in China. ②____________________________________________________ more than 1，500 years in China.(应用文之传统文化) Ⅰ.教材语块必备 1．_____________________________________ 给予人们忠告和警示 2．_________ 终究；毕竟 3．_______________ 被……袭击 4．_________________________________ 释放微量的化学物质 5．_______________ 求救 6．______________ 警报系统 7．____________ 制造噪音 8．________________________ 最令人惊奇的是 9．_________ 松树 10．______________ 从……偷/窃取某物 Ⅱ.单词拼写/完成句子 1．The talented artist has carved an interesting decoration from this piece of tree ____(根). 2．This famous movie was adapted from an ancient Chinese ____ (神话). 3．Scientific evidence suggests that sea levels here will rise by at least 30 ___________ (厘米) by 2030. 4．据报道，昨晚这个地区发生了严重地震，造成了巨大的损失。 A serious earthquake _________________________ this area last night，causing a lot of damage. 5．肥胖和久坐不动的生活方式被认为会增加患心脏病的概率。 Obesity and a sedentary lifestyle ________________________ an increased risk of heart disease. 描写大自然 Ⅰ.常用词汇 课文词汇 1．tiny amounts of chemicals微量化学物质 2．drive insects away赶走昆虫 3．use sound to communicate使用声音进行交流 4．make noises with their roots通过根部发出声响 5．spread poisons to attack other plants毒物质攻击其他植物 6．share...with...与……分享…… 补充词汇 7．be linked by...被……连接 8．break down organic matter分解有机物 9．fight off germs抵抗细菌 10．survive freezing temperatures在极寒温度下生存 11．signal to向……发出信号 12．softly fade into yellow慢慢褪色变黄 13．make sounds发出声音 14．grow into a tall shady tree长成一棵绿荫如盖的大树 15．cause an unpleasant reaction引起不愉快的反应 Ⅱ.常用句型 课本原句 1．The plant releases tiny amounts of chemicals from the leaves that are being eaten. 正遭受啃食的叶子会释放出微量的化学物质。 2．Some plants make noises with their roots. 有些植物通过根部发出声响。 3．Some trees make clicking noises when there is not enough water，indicating drought is arriving. 还有些树木在水分不足时会发出咔嗒声，以示干旱就要来了。 4．...the wood wide web is linked underground by fungi. ……植物万维网则是在地下通过真菌连接而成的。 5．This fungal network links the roots of different plants to each other. 这个真菌网络将不同植物的根彼此连接。 6．Using the wood wide web，plants can share information and even food with each other. 通过植物万维网，植物可以互相分享信息甚至是食物。 其他表达 7．Antarctica is home to a variety of wildlife that has adapted to its extreme conditions. 南极洲是各种适应极端环境的野生动物的家园。 8．Antarctica holds about 90 percent of the world's ice，with most of its fresh water in a frozen state. 南极洲拥有世界上约90%的冰，大部分淡水处于冰冻状态。 Ⅲ.写作微练 1．许多植物都有化学防御，其中一些植物会产生苦味或引起不愉快反应的化学物质。 __________________________________________________________________________________________________ 2．蚂蚁通过触摸、化学信号、移动身体甚至用腿发出声音来相互交流。 _______________________________________________________________________________________________________________ $