Unit 5 Looking into nature Understanding ideas Reading 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琥珀作为“时间胶囊”展开，核心知识点包括其帮助科学家探索恐龙羽毛、古代花朵、蚂蚁新物种等自然秘密。课堂导入通过“想象恐龙”情境、“琥珀若会说话”设问，结合标题预测、段落划分等支架，引导学生从整体到细节理解文本。 亮点在于融合语言能力与思维品质，通过快速阅读判断文体、细节问答（如恐龙外貌认知转变）培养信息提取与分析能力，作业分层（必做短文、选做思维导图）提升学习能力。学生能在探究中提升阅读思维，教师可借助结构化活动高效教学。

nullnullI have waited for millions of years to tell you secrets caught in time. Please listen carefully. Unit 5 Secrets caught in time What do you think dinosaurs looked like? Is it true? dinosaur [ da n s r] What animal is making this sound? Scientists know that from a piece of _. amber What do amber mean to scientists? It can help scientists unlock_. It serves as (充当...) _. It leads to some important_. It shows that how life has _ over time. the secrets of nature a window on the past discoveries changed In this class, you are able to read and find amber's 3 functions in exploring nature's secrets; identify and explain how the writer draws readers' attention; understand the role of amber as a window on the past. If amber could speak, what would they say to us humans? I have waited for millions of years to tell you _. Please listen carefully. secrets caught in time Look at the title and pictures and predict. What does “ caught in time” mean? What secrets might be caught? Things from long long ago are kept/preserved(保存) in the amber. Let’s read this passage and find the answer of this question together. Read the passage quickly and answer the questions. What’s the type of the passage? A. Narrative 记叙文 B. Exposition 说明文 C. Argumentation 议论文 scientists discovery studied research Where are you most likely to read this passage? A. In a popular science magazine about findings in nature. B. In a newspaper report on exhibitions about dinosaurs. C. In a sci-fi book about travelling 160 million years into the past. science fiction 科幻小说 Divide the passage into three parts and match the main ideas. Part 1:Para. _ Part 2:Para. _ Part 3:Para. _ 1 2-4 5 How many supporting details did the author use to tell the secrets caught in time by amber? Para. 2:The secret about_ Para. 4:The secret about_ Para. 3:The secret about_ dinosaurs a flower ants Three. It describes a feathered dinosaur looking for food. Amber is a key to nature’s secrets and we need more study. Some supporting details(细节). Read for details Read Para. 1 and check True or False. The dinosaur in the ancient forest has no feathers. The dinosaur is looking for its next meal in the forest. The dinosaur is sleeping in the ancient forest. The dinosaur in the ancient forest has feathers. The dinosaur is running in the ancient forest. 1 Imagine a dinosaur in an ancient forest. It is running around looking for its next meal. With an angry cry, it opens its mouth, raises its beautiful feather-covered arms, and... Read for details Read Para.1 and choose. 1 Imagine a dinosaur in an ancient forest. It is running around looking for its next meal. With an angry cry, it opens its mouth, raises its beautiful feather-covered arms, and... Why does the writer start with “ Imagine a dinosaur...”? A. To make the passage believable. B. To create a lively picture and draw readers’ attention. C. To prove dinosaurs are with feather-covered arms. While-reading While-reading The secret about dinosaurs 2 Wait, feathers on a dinosaur? For hundreds of years, people believed that dinosaurs looked like huge lizards. Just look at all those dinosaurs in books, films and TV shows! However, thanks to a piece of amber, scientists now know that this idea is wrong. In the amber from Southeast Asia, they found the tail of a dinosaur – with feathers. What did dinosaurs look like in people’s mind? They looked like huge lizards. huge lizard What did scientists find in the amber from Southeast Asia? They found the tail of a dinosaur-with feathers. What? It tells us the secret about_. what dinosaurs looked like While-reading A flower In Northern Europe The flower grew there 35 million years ago. Life on earth has always changed. The secret about a flower The secret about a flower What’s in the amber? Where was it found? What does the finding prove? What secret does it tell? Retell Amber is a window on the past. A piece of amber from _, holds _. Through the amber, scientists found that _ . It proves that _. The secret about a flower Read for details Read Para. 4 and answer the questions. 4 Thanks to amber, more than 300 unknown species have been discovered. In a piece of amber from Africa, scientists found 13 ants. Research shows that they are a completely new species. Scientists used to believe that ants came from the northern half of the earth. The discovery of this African species has changed old beliefs about the history of ants. Who knows whether this piece of amber will tell us more secrets? 1.What’s in the amber? 2.What was the old belief about ants? 4.What secret does it tell? 13 ants. Scientists used to believe that ants came from the northern half of the earth. Ants are also in the southern part of the earth, such as in Africa. 3.What does the amber show? It shows the ants are a completely new species in Africa. The secret about ants Amber can help us to discover new species. Read for details Read Para. 5 and answer the questions. 5 As a window on the past, amber has been much studied. However, it's still not fully understood. We should put more effort into research. Then we can use this key to unlock more secrets of nature. What does the writer compare the amber to? A window on the past and a key. Why is amber called a “ key”? A. Because it can open doors to ancient buildings and cities. B. Because it helps us unlock secrets and discover unknown things. C. Because it is as hard and golden as a metal(金属的) key in our life. Read for details Read Para. 5 and choose. 5 As a window on the past, amber has been much studied. However, it's still not fully understood. We should put more effort into research. Then we can use this key to unlock more secrets of nature. What’s the main purpose of last paragraph? A. To encourage more research to better understand nature. B. To explain why amber is difficult to study and understand. C. To describe how people have used amber for thousands of years. Lead in The writer says “ We should put more effort into research.” Do you agree? Why or why not? Yes. Because there are still many secrets in the nature we don’t know. And only when we understand the nature better, can we protect it better. What are some other ways for you to learn about nature’s secrets? We can read science books. They are like treasure boxes, giving us useful information about animals, plants and their living habits. We can go outside to observe small things like flowers, insects and birds in the park. What are some other ways for you to learn about nature’s secrets? We can watch nature documentaries. They show us the real world of nature, such as how animals hunt and how plants grow. As students, what should we do to protect the nature? 纪录片 Complete the diagram with the words and expressions from the passage. 1. secrets 2. Thanks to 3. (always) changed 4. 35 million 5. unknown 7. window 6. ant 8. nature Homework Must do: Write a short passage about how amber helps scientists unlock the secrets of nature. Choose to do: Find another “natural time capsule” Then, draw a simple mind map to show: What it is What secrets it keeps from the past Why it is important for scientists Thank you $琥珀里发现过最离谱的东西是什么？大家都知道琥珀说白了就是恐龙时代留下来的松脂化石。小虫子、小动物一脚踏进去就像被按了暂停键，时间永远停在那一刻。有块琥珀里不仅封着一只黄蜂，还裹着两颗带气泡的远古水珠。要是把气泡戳破，我们吸进去的就是1亿年前的空气。更夸张的是，有人挖出过一只5400万年前的壁虎，连眼珠子、指甲、鳞片都毫发无损，像刚睡着一样。别以为琥珀只抓小个子，他连恐龙也没放过。一节9900万年前的恐龙尾巴被整段封存，这也是头一回实打实的证明有些恐龙真的披着羽毛抖音。