Unit 5 Looking into nature Developing ideas Listening and speaking课件 2025-2026学年外研版英语八年级下册

该初中英语课件围绕“自然奥秘”主题，核心涵盖亚马逊沸腾河听力理解及用could、may等谈论可能性的词汇句型。课堂导入通过黑洞视频、自然奥秘图片激活兴趣，Pre-listening铺垫背景，While-listening训练信息获取，Post-listening引导讨论，构建从输入到输出的学习支架。 其亮点在于融合视频、音频资源，通过听力选择、填空及师生对话训练语言能力，设计游客与导游对沸腾河成因的猜测活动，培养思维品质中的分析与推断能力，设置自我评估和分层作业提升学习能力。学生能在探究自然奥秘中提升语言应用能力，教师可借助结构化活动提高教学效率。

Listening & speaking Vocabulary Vocabulary By the end of the lesson, we will be able to 听懂关于亚马逊沸腾河的听力材料，选择正确的主题并完成信息填空； 运用 could, may, might, maybe, perhaps 等词及相关句型谈论可能性，完成表格填写。分享本节课学到的关于自然奥秘的知识，表达自己最感兴趣的自然秘密； 两人合作选择自然未解之谜，运用所学表达讨论并给出可能的解释。 学习目标 Pre-listening 1. What secrets of nature do these pictures show? the black hole 黑洞 the Bigfoot 大脚野人 the Loch Ness Monster 尼斯湖水怪 the beginning of the universe 宇宙起源 Enjoy the video of the black hole Pre-listening 大自然中充满了奥秘。它们正等待着被揭开谜底。这其中涉及黑洞、 宇宙的起源、尼斯湖水怪以及大脚怪等。这些秘密激发了我们的 好奇心，促使科学家们努力去更深入地理解我们周遭的奇妙事物。 While-listening A group of people are on a guided tour. The guide is talking about an unsolved secret of nature... 南美洲一条正在消失的河流。 亚马逊雨林中人们的生活。 亚马逊雨林中一条沸腾的河流。 Listen to the talk and choose the correct topic. 听录音并选择正确的标题。 While-listening Listen again and fill the blanks. facts about the river the speaker’s opinion people’s activities 数字/温度 动词 名词 名词 形容词+名词 再听一遍并完成填空。 While-listening Listen again and fill the blanks. 86 cook heavy rain tea amazing wonders 再听一遍并完成填空。 Post-listening If you are a tourist, what questions would you ask when visiting the Boiling River? Let’s listen to the guide and tourists’ talk. Listen and complete the table. n. a verb phrase a verb phrase number Place v. adj. n. sunshine heat the river becomes hot 700 kilometres / 700 km in the water produce research possible Think and discuss 1. How many possible reasons are mentioned in the conversation? 2. Whose opinion do you agree with? Why? 3. Are the tourists sure of their ideas? How do you know? Three. I think the last girl’s opinion is reasonable. Because other opinions have their explanations, but her opinion hasn’t been proved. Listen again. Then talk about how the speakers discuss possibilities. Guide: Ancient people here thought that the sun makes the river hot. Boy: It's possible, right? There's a lot of sunshine here. Guide: Actually, it's unlikely for the sun to heat the river that much. Just think of outdoor swimming pools. Would the water get to 86 °C in summer? Girl: You're right. But how about volcanoes? Perhaps the river passes a volcano and becomes hot? Guide: Good guess! But I'm afraid that's not the reason. The nearest volcano is about 700 kilometres away. Girl: I have another idea! Maybe there are some chemicals in the water. They can produce heat. I've studied them at school. Guide: That's possible. But scientists haven't found such chemicals in the river yet. They need to do more research… Tapescript 沸腾河的前世今生---形成原因 Post-listening What are the unsolved secrets of nature in the pictures? Crop circles 麦田怪圈 麦田怪圈出现在英国。田地里农作物被压平后形成的大型几何图案，大多在一夜之间神秘出现。 有人认为是外星人留下的信号；有人猜测是龙卷风、等离子气流等自然现象造成。 Atlantis 亚特兰蒂斯 亚特兰蒂斯是传说中的失落古城。传说中，它是一座富庶强盛、文明高度发达的岛国。但后来岛上的人们变得贪婪堕落触怒了众神。一夜之间，亚特兰蒂斯遭遇地震洪水，最终沉入深海。 Crop circles Atlantis 1. What do you know about the secrets of nature? 2. Do you know how to use words and expressions to talk about secrets of nature? 3. Can you discuss possibilities? Must do: 1.Memorize the new words, phrases and key sentence patterns of this lesson. 2.Finish the relevant after-class exercises. Choose to do: 1.Write about one unsolved secret of nature and possible explanations. 2.Talk about what you have learnt about the secrets of nature in this section. Homework Thank You Lavf58.76.100 Blues 61152.0 Blues 147552.0 $