Unit 5 Looking into nature Listening and speaking 课件 2025-2026学年外研版八年级英语下册

该初中英语课件围绕“自然奥秘”主题展开听说教学，通过黑洞、尼斯湖水怪等自然现象导入，引导学生聆听亚马逊沸腾河的音频材料获取事实，再讨论其成因猜测，最后以对话形式练习表达可能性，构建从输入到输出的学习支架。 其亮点在于以自然奥秘为任务载体，通过“发现-收集-讨论-理解”的任务链培养思维品质，听力中区分游客猜测与导游观点提升语言能力，语音部分结合record、produce等词的词性对比训练重音，助力学习能力。学生能激发探索兴趣，提升听说与逻辑思维，教师可借助完整任务链和评价工具优化教学。

Looking into nature 5 Unit Listening and speaking Look and say Which of the secrets interests you most? black holes Bigfoot (大脚怪) the Loch Ness Monster (尼斯湖水怪) Nature is full of secrets. They are waiting to be explained. These include black holes, the beginning of the universe, the Loch Ness Monster and Bigfoot. These secrets awaken our curiosity and drive scientists to better understand the wonders around us. Listen to the talk and choose the correct topic. 1 a A disappearing river in South America b The life of the people in the Amazon rainforest c A boiling river in the Amazon rainforest Now let's listen again to learn more details about it. Listen again and complete the profile. 2 温度数字 动词 名词 名词或动词-ing形式 名词复数 86 cook tea heavy rain amazing wonders Tapescript Guide: Welcome to the Amazon Rainforest! Now, I'd like to present a__________ river to you. Since________times, people have talked about a boiling river in the rainforest. Many people ________ at this story, but in fact, it's true! The_______ can be as hot as 86°C. People here cook with it, clean with it and make tea with it! There's no________to make a fire! The water only cools down after heavy rain. Then people go swimming in it. I think it's one of the most amazing wonders of the rainforest. special ancient laugh water need We've learned some facts about the boiling river. But why is the river so hot? Let's listen to some guesses and explanations. Listen to the conversation and complete the table. 3 heat the river becomes hot 700 kilometres produce in the water possible research Listening for opinions Phrases such as I think, I believe and I guess show people's opinions. Remember: people are sharing their ideas, so you don't have to agree. But you should listen to the other person's opinions and be polite. Learning to learn Tapescript Guide: Ancient people here _______ that the sun makes the river hot. Boy: It's possible, right? There's a lot of sunshine here. Guide: ________, it's unlikely for the sun to heat the river that much. Just think of ________ 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 ________! 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 _________them at school. Guide: That's possible. But scientists haven't found such chemicals in the river yet. They need to do more research… thought Actually outdoor guess studied un 流过，穿过 ...之外；远离 化学物质 Work in pairs. Choose one unsolved secret of nature and talk about possible explanations. 4 A:Have you heard of...? B:Yes, it's very strange. I'm curious about the possible reasons. A:Perhaps it's because... Useful expressions ·The truth may be... ·It is likely that... ·Perhaps it's because... ·It's probably a result of... ·There is a (strong) possibility that... ·It's possible that... ·There's a chance that... crop circle sunken city A: Have you heard of crop circles(麦田怪圈)? B: Yes, it's very strange. I'm curious about the possible reasons. A: Perhaps it's because some people make them as a fun trick. B: Hmm, it's unlikely that all crop circles are tricks—some look too neat and perfect. It is likely that they're caused by strong winds or special natural forces? A: That sounds possible! Do you have another idea? B: Well, some people say it's from aliens. But there's a small chance that aliens would do this—it's hard to believe. A: Yeah, that's not very likely. There's a chance that scientists will find the real reason later! B: I hope so—this mystery is really interesting! dessert fairy circles nazca lines eye of the sahara underwater city blue tears First, we FOUND a mystery (the Boiling River). Then, we COLLECTED facts. Next, we DISCUSSED ideas and possibilities. Finally, we UNDERSTOOD that not all mysteries have one answer. Different guesses help science grow! A syllable has one vowel sound and only one vowel sound, and one or more consonant sounds. Syllables Improve your pronunciation for clear communication Today we'll learn Word stress. What's the connection between syllables and stress? When we say words with more than one syllable, we usually stress one of the syllables. ＊Study well and make progress every day. ＊Work on the new road is progressing slowly. 新路的修建工作在缓慢进行。 好好学习，天天向上。 n. v. Try to read the following sentences and pay attention to the words in blue. Some two-syllable words are both nouns/adjectives and verbs. When we use them as nouns/adjectives, the stress is usually on the first syllable. When we use them as verbs, the stress is usually on the second syllable. /ˈprəʊɡres/ Phonetics in use Stress in words (1) 重读音节用重音符号“ˈ”标出。 Phonetics in use Stress in words (1) A word can be stressed on different syllables. If we stress the second syllable, the word is usually a verb. For example, present describes the time, while present describes an action. Listen and mark the stress. Phonetics in use record a world record / record the temperature produce fresh produce / produce oxygen perfect a perfect gift / perfect her skills desert the biggest desert on earth / desert his duty As nouns/adjectives, the stress is on the first syllable. As verbs, the stress is on the second syllable. ˈ ˈ ˈ ˈ ˈ ˈ ˈ ˈ 1. Can you get basic facts about the boiling river in the Amazon? 2. Can you tell the difference between facts and people's opinions? 3. Can you use proper words and sentence patterns to talk about possibilities of an unsolved nature mystery? 4. Do you feel more curious about the secrets of nature? 5. Can you correctly pronounce two-syllable words that can be used as both nouns/adjectives and verbs? Must-do: 1. Listen and repeat the conversation about the Boiling River on page 74. Try to copy the speaker's pronunciation. 2. Make a list of useful phrases from today. Write at least 2 example sentences for each group: Giving Opinions: I think that..., In my opinion... Discussing Possibilities: Perhaps it's... , It could be... 3. Preview Reading for writing part on pages 76-79. Choose to do: Choose one natural mystery from page 73 or another one you like. Make a simple "Mystery Card" in English: 1-2 Facts (What is it?) 1-2 Guesses or Opinions (What do people say about it?) $