外研版（2024）八年级下册（2024））Developing ideas教学ppt课件

这是一份外研版（2024）八年级下册（2024））Developing ideas教学ppt课件，共35页。PPT课件主要包含了Contents，语言能力，思维品质，学习能力，文化意识，教学重点，教学难点，教学重难点，rɪˈkɔːd，ˈrekɔːd等内容，欢迎下载使用。
能听懂关于自然奥秘的听力材料，准确捕捉主旨大意、关键细节及说话者的推测语气，理解模态动词在表达可能性中的用法，提升听力理解能力。能熟练运用本单元核心词汇（如biling, wnder, heat等）和宾语从句，围绕自然现象的成因进行简单问答、讨论，做到表达基本流畅、语法无误。能模仿听力语篇的语气和结构，进行角色扮演，清晰表达对自然奥秘的看法和推测，提升口头交际的准确性和连贯性。
能根据听力材料中的信息，分析、归纳自然现象的可能成因，培养逻辑推理和归纳总结能力，学会梳理信息间的关联。能结合已有知识，对听力中提到的自然奥秘提出合理质疑和补充推测，打破单一思维，培养批判性思维和多角度思考能力。能在小组讨论中清晰地表达自己的观点，倾听同伴意见并合理回应、补充，培养思维的条理性和合作探究中的思维协作能力。
能掌握“听前预测、听中抓细节、听后复述”的听力策略，主动运用该策略完成听力任务，提升听力学习效率。能主动积累自然探索相关的英语词汇和句型，在听说练习中发现自身不足，主动向同伴或老师请教，培养自主学习和查漏补缺的能力。能积极参与小组合作听说活动，主动承担任务，学会分工协作、互助学习，提升合作探究和高效完成学习任务的能力。
了解中外科学家探索自然奥秘的相关事迹，感受不同文化背景下人们对自然的敬畏与探索精神，尊重多元文化中的科学探索理念。体会中西方在表达自然探索观点时的语言差异，培养跨文化交际意识，学会用得体的英语表达对自然探索的看法。树立尊重自然、热爱自然、主动探索自然的意识，理解不同文化中“人与自然和谐共生”的共同理念，增强文化自信。
掌握本课时核心词汇、短语及宾语从句、模态动词的用法，能在听说语境中准确运用，确保口头表达的规范性和准确性。能听懂关于自然奥秘的听力材料，快速捕捉主旨和关键细节，能根据听力信息完成问答、复述等任务，提升听力核心技能。能围绕“自然奥秘及成因”进行简单的口头讨论、角色扮演，清晰地表达自己的观点和推测，实现基本的听说交际目标。
在口头表达中灵活运用宾语从句和模态动词表达推测，避免语法错误，同时保证表达的流畅性和逻辑性，克服句式运用障碍。听力中能准确捕捉说话者的语气和隐含信息，结合语境推断自然现象的可能成因，避免只关注表面信息而忽略深层含义。在小组讨论中主动表达观点、回应同伴，准确运用所学语言组织思路，解决开口胆怯、表达不连贯的问题，提升口头交际能力。
黑洞是广义相对论预言的宇宙致密天体，因其引力极强，事件视界内的逃逸速度大于光速，光也无法从中逃脱。1916 年，德国天文学家卡尔・史瓦西通过计算得出爱因斯坦场方程的真空解，提出了史瓦西半径与视界概念。1964 年，科学记者安・尤因首次将其称作 “黑洞”，后经物理学家惠勒推广。近年来观测不断取得突破：澳大利亚团队发现每日吞噬一个太阳质量的高速成长黑洞，国际团队发现孤立黑洞，中国 “天关” 卫星也捕捉到中等质量黑洞撕裂吞噬白矮星的过程。
Cultural nte
Bigft，又称 Sasquatch，即大脚野人，是流传于北美地区的神秘类人猿生物，也是神秘动物学的经典形象。传说它身高 2 至 4 米，全身覆盖浓密毛发，直立行走，因留下巨大脚印而得名。这一传说源自北美原住民文化，1958 年因巨型脚印发现被广泛传播。虽有不少目击报告与影像资料，但均缺乏可靠证据支撑。主流科学界认为大脚野人并不存在，相关记录多为误认、伪造或民间传说。如今它已成为流行文化符号，频繁出现在影视、文学作品中。
尼斯湖水怪是苏格兰尼斯湖的传疑生物，外形常被描述为类似蛇颈龙，至今尚无确凿证据证明其存在。相关记载最早可追溯至公元 565 年，1933 年的目击报告引发广泛关注，次年公布的经典照片后被证实为伪造。科学界提出地震气泡、巨型鳗鱼等多种解释。近年仍不时出现疑似影像记录，也推动了多次科考，2023 年开展了五十多年来最大规模搜索，2025 年有团队进行环境 DNA 研究。它被列为世界著名未解之谜，现已成为苏格兰重要文化符号，每年吸引上百万游客。
D yu knw the secrets f nature belw?
蚁群智慧Ant Clny Intelligence
潮汐节律Tidal Rhythms
晶体生长Crystal Frmatin
Plant Cmmunicatin
生物发光Biluminescent Glw
云层发电Clud Electrificatin
候鸟导航Migratry Navigatin
深海热泉Deep-Sea Vents
What ther secrets d yu knw? Discuss them with yur partner.
Which f the secrets interests yu mst?
I'm mst interested in the secret f black hles. Black hles are mysterius and amazing csmic phenmena. They have super strng gravity that can even trap light, and we still dn't fully understand what's inside them. Explring black hles helps us learn mre abut the rigin and evlutin f the universe, which makes me really curius.
Pre-listening
The secret f Bigft interests me mst. Bigft is a legendary creature that peple have reprted seeing in frests fr a lng time, but there's n slid scientific prf f its existence. I'm fascinated by whether it's a real unknwn animal r just a myth, and it's fun t think abut the unknwn creatures hiding in the wild.
The secret f the Lch Ness Mnster interests me mst. Fr hundreds f years, peple have talked abut a huge mnster living in Lch Ness in Sctland. Even thugh many searches have been dne, we still dn't knw if it's real. This unslved mystery always makes me want t find ut the truth behind the stries.
Nature is full f secrets. They are waiting t be explained. These include black hles, the beginning f the universe, the Lch Ness Mnster and Bigft. These secrets awaken ur curisity and drive scientists t better understand the wnders arund us.
DID YOU KNOW
大自然充满了奥秘。这些奥秘正等待着被揭开。其中包括黑洞、宇宙的起源、尼斯湖水怪以及大脚怪。这些奥秘激发了我们的好奇心，并促使科学家们更好地去探索我们周围的世界的奇妙之处。
While-listening
Listen t the talk and chse the crrect tpic.
a A disappearing river in Suth America.b The life f the peple in the Amazn rainfrest.c A biling river in the Amazn rainfrest.
单词中的重音（1）一个单词可以在不同的音节上被重读。如果我们把重音放在第二个音节上，这个单词通常是一个动词。例如，“present”表示时间，而“present”表示动作。
动词重音核心规律1. 总规则：双音节单词中作名词 / 形容词：重音多在 第一音节；作动词：重音多在 第二音节2. 动词重音格式重音符号 ˈ 标在重读音节前；结构：前轻后重 → 弱读 + 重读3. 高频动词（重音都在第二音节）preˈsent v. 呈现，颁发；reˈcrd v. 记录，录制；cnˈduct v. 组织，实施；bˈject v. 反对；deˈsert v. 抛弃，遗弃；exˈprt v. 出口；imˈprt v. 进口；prˈduce v. 生产，制造；susˈpect v. 怀疑；perˈmit v. 允许4. 一句话记忆：动词喜欢把重音放在后面。
Listen and mark the stress.
recrda wrld recrd / recrd the temperatureprduce fresh prduce / prduce xygenperfect a perfect gift / perfect her skillsdesert the biggest desert n earth / desert his duty
Nw listen again and repeat.
/ˈprɒdjuːs/
/prəˈdjuːs/
Listen again and cmplete the prfile.
What is it?It is a biling river as ht as 1 ℃.What d the lcal peple d with it?They 2 with it?They clean with it.They make 3 with it.They smetimes g swimming in it, but nly after 4 .What's the speaker's pinin?It's ne f the mst 5 f the rainfrest.
amazing wnders
Learning t learnListening fr pininsExpressins such as I think, I believe and I guess shw peple's pinins. Remember: peple are sharing their ideas, s yu dn't have t agree. But yu shuld listen t the ther persn's pinins and be plite.
学会学习倾听意见诸如“我认为”“我相信”“我猜测”这样的表述体现了人们的观点。请记住：人们是在分享自己的想法，所以你不必认同这些观点。但你应该倾听对方的意见，并保持礼貌。
Listen t the cnversatin and cmplete the table.
The ancient peple's idea is pssible. There's much 1 .
It's unlikely fr the sun t 2 . that much.
Perhaps the river passes a vlcan and 3 .
That's nt the reasn. The nearest vlcan is abut 4 away.
Maybe there are sme chemicals 5 . They can 6 heat.
That's 7 , but scientists haven't fund any yet. Mre 8 is needed.
heat the river
700 kilmetres
in the water
Learning t learnTalking abut pssibilitiesCuld, may and might are used t talk abut pssibilities. Wrds such as maybe and perhaps are used, t. We can als use the structure It's certain / likely / pssible that...
学会学习谈论可能性“能够”“可能”和“也许”这些词用于谈论可能性。诸如“或许”和“大概”这样的词也会被使用。我们还可以使用“它必定会/很可能/可能……”这样的结构。
Hw t talk abut pssibilities.一、核心功能T talk abut pssibilities means t express hw likely smething is t happen r be true.（谈论可能性，就是表达一件事发生或为真的概率大小。）二、用情态动词表达可能性1. must — 一定，肯定（可能性极高）Used when yu are almst sure smething is true.例句：He must be ill. 他一定生病了。2. may /might/culd — 可能，也许（中等可能性）Used when yu think smething is pssible but yu are nt sure.
例句：It may rain this afternn. 今天下午可能下雨。3. can — 有时会，可能（多用于理论 / 普遍可能）例句：It can get very cld here in winter. 这里冬天可能会很冷。（否定：can't — 不可能）三、用副词表达可能性1. prbably — 很可能，大概（可能性较高）Usually ges befre the main verb r after be 动词.例句：He will prbably win. 他可能会赢。2. maybe /perhaps — 也许，或许（语气较弱，常放句首）例句：Maybe he is right. 或许他是对的。
四、常用句型结构1. It is certain that … 必定会……例句：It is certain that he will pass the exam. 他必定会通过考试。2. It is likely that … 很可能……例句：It is likely that they will win the game. 很可能他们会赢得这场比赛。3. It is pssible that … 有可能……例句：It is pssible that she will be late. 有可能她会迟到。4. There is a chance that … 有机会 / 有可能……例句：There is a chance that we will finish early. 有可能我们会提前完成任务。五、可能性从高到低排序
must / certain 一定prbably / likely 很可能may / might / culd 可能maybe / perhaps 也许can't / impssible 不可能六、易混点小结can：表示 “理论上可能”may/might：表示 “实际可能发生”must：表示 “非常确定的推测”can't：表示 “完全不可能”
Pst-listening
Wrk in pairs. Chse ne unslved secret f nature and talk abut pssible explanatins.
Useful expressinsThe truth may 's likely it's 's prbably a result f...
There's a (strng) pssibility 's pssible 's a chance that...
Sample 1: Crp Circles
Have yu heard f crp circles?
Yes, it's very strange. I'm curius abut the pssible reasns.
Perhaps it's because sme peple make them as a prank.
The truth may be that mst are man-made, but there's a pssibility that a few are natural phenmena.
It's likely that wind and weather patterns create simple nes, while cmplex nes are human wrks.
It's pssible that we'll never knw fr sure all the rigins.
Have yu heard f the underwater ancient city ff the cast f Greece?
Perhaps it's because f a huge earthquake that sank the city thusands f years ag.
It's prbably a result f sea level rise after the last ice age.
Sample 2: Underwater Ancient Cities
There's a strng pssibility that natural disasters caused the city t submerge.
There's a chance that the city was built n a fault line, making it vulnerable t sinking.
biling /ˈbɔɪlɪŋ/ adj. 很热的，滚烫的
例句：It's biling ht tday. 今天热得要命。biling pint 沸点例句：Water reaches its biling pint at 100℃. 水在 100 摄氏度达到沸点。biling water 沸水，开水例句：Dn't tuch the biling water. 别碰开水。bil /bɔɪl/v. 沸腾；煮沸例句：Please bil sme water. 请烧点开水。biled /bɔɪld/adj. 煮沸的，煮熟的例句：I like biled eggs fr breakfast. 我早餐喜欢吃煮鸡蛋。biler /ˈbɔɪlə(r)/n. 锅炉；热水器例句：The biler is brken. 热水器坏了。
chemical /ˈkemɪkl/ n. 化学品
例句：These chemicals are harmful t the envirnment. 这些化学品对环境有害。chemical reactin 化学反应例句：Burning is a kind f chemical reactin. 燃烧是一种化学反应。chemistry /ˈkemɪstri/n. 化学例句：I am very interested in chemistry. 我对化学很感兴趣。chemist /ˈkemɪst/n. 化学家；药剂师例句：His dream is t becme a famus chemist.他的梦想是成为一名著名的化学家。chemically /ˈkemɪkli/adv. 化学地例句：The tw substances are chemically different. 这两种物质在化学性质上不同。