Unit 4 Section B (3a～3c) 课件 2026-2027学年人教版英语八年级上册

Section B (3a~3c) Unit 4 Amazing Plants and Animals 学习目标 01 能从文本中系统提取蓝鲸体重、栖息地、食物、寿命及生态作用等核心信息，构建对蓝鲸物种的完整认知框架。 02 能运用掌握的蓝鲸知识，完成信息表格填写、第一人称视角改写，以及符合要求的短文创作，提升语言转化与表达能力。 1. Which animal runs the fastest among all land animals ? The cheetah The horse The lion Let’s have a quiz about animals. Lead in 2. What animal has the longest neck ? The ostrich The deer The giraffe 3. What is the largest and heaviest animal in the world ? The lion The elephant The blue whale Let's learn more about blue whales! What is the type of the article ? A. It is a narration.(记叙文) B. It is an exposition( 说明文) C. It is an argumentation( 议论文) D. It is a practical writing(应用文) It tells us many facts about the blue whales. The feature of an exposition: Factual and accurate. (客观准确） Reading 新课讲授 Read the text and complete the table. The blue whale is the largest and heaviest animal on earth. It can weigh as much as 200 tons. Many people like watching blue whales swim, and they think it is one of the most beautiful things to see. Blue whales live in all oceans except the Arctic Ocean. They eat a lot, but they eat some of the tiniest animals in the ocean. A blue whale can eat around four tons of these a day. Blue whales can live up to 90 years. When a blue whale dies at sea, it becomes food for many kinds of animals living in and around the sea. This food lasts for over a year and it helps to create a lively and healthy ecosystem. Blue whales play an important role in our world, so we must protect them. The Blue Whale Blue whale facts（事实） Weight Where they live Food How long they live Importance in nature 3a What’s the structure of the text? Protection call importance in nature facts people's opinion Pre-writing Further Thinking Why is protecting blue whales important ? They play an important role in marine ecosystems, and their decline (减少）could disrupt（扰乱）ocean health. 一鲸落，万物生。 If you are blue whales, can you introduce yourselves ? Imagine you are a blue whale. Use the first person to rewrite the first paragraph. While-writing 3b Hello everyone! My name is Billy the Blue Whale. I am _____________ ___________________________________________________________ I’m heavy, but I love __________________________________________ ___________________________________________________________. I live in ____________________________________________________. My favourite food is __________________________________________ I can eat ____________________________________________________. 第一人称 How? Step 1 找人称 Step 2 换人称 Step 3 句子对比 Step 4 填充内容 Step 5 整合内容 Step 1 找人称 Step 2 换人称 注意：主、谓、宾一致 I am I me I am I I I I A. I am the largest and heaviest animal on earth. B. I can weigh as much as 200 tons. C. Many people like watching me swim, and they think I am one of the most beautiful things to see. D. I live in all oceans except the Arctic Ocean. E. I eat a lot, but I eat some of the tiniest animals in the ocean. F. I can eat around four tons of these a day. Hello everyone! My name is Billy the Blue Whale. I am _____________ ___________________________________________________________ I’m heavy, but I love __________________________________________ ___________________________________________________________. I live in ____________________________________________________. My favourite food is __________________________________________ I can eat ____________________________________________________. Step 3 句子对比 Hello everyone! My name is Billy the Blue Whale. I am _____________ ___________________________________________________________ I’m heavy, but I love __________________________________________ ___________________________________________________________. I live in ____________________________________________________. My favourite food is __________________________________________ I can eat ____________________________________________________. Step 4、5 填充、整合内容 the largest and heaviest animal on earth. I can weigh as much as 200 tons. all oceans except the Arctic Ocean. around four tons of these a day. Many people like watching me swim, and they think I am one of the most beautiful things to see. ? I eat a lot, but I eat some of the tiniest animals in the ocean. ? some of the tiniest animals in the ocean. swimming, and people think I am one of the most beautiful things to see. Complete your passage about the blue whale based on the text in 3a. 3c I I I become I you me die I can live up to 90 years. When I die at sea, I become food for many kinds of animals living in and around the sea. This food lasts for over a year and it helps to create a lively and healthy ecosystem. I play an important role in our world, so you must protect me. Sample writing ASSESSMENT（评价标准） Content（内容）8分 Does it include the main points? Grammar（语法）2分 Any mistakes (spelling or grammar) Language（语言）4分 Any good vocabulary or sentences? Handwriting（书写）1分 Is it clean and tidy? Post-writing except：表示“排除在外”，指从整体中去掉某一部分，强调“不包含”。 besides：表示“除……之外还有”，指在整体之外额外增加某一部分，强调“包含”。 1. Blue whales live in all oceans except the Arctic Ocean. 蓝鲸生活在除北冰洋以外的所有大洋中。 1. Everyone attended the meeting except Tom. 除了汤姆，所有人都参加了会议。—— 汤姆未参加，被排除在外 2. Besides English, she also speaks French and Japanese. 除了英语，她还会说法语和日语。—— 英语是基础，额外还会两种语言，包含在内） 3. The store is open every day except Sunday. 这家店除周日外，每天都营业。—— 周日不营业，被排除 Language points living in and around the sea 整体是现在分词短语作后置定语，修饰前面的 animals。相当于一个定语从句 which/that live in and around the sea。 2. When a blue whale dies at sea, it becomes food for many kinds of animals living in and around the sea. 当一头蓝鲸在海洋中死去时，它会成为生活在海洋里及海洋周边的多种动物的食物。 1. The boy standing there is my brother. 站在那儿的男孩是我弟弟。 2. The girl singing on the stage is my best friend. 在舞台上唱歌的那个女孩是我最好的朋友。 3. We visited a factory producing eco-friendly products last week. 上周我们参观了一家生产环保产品的工厂。 Save animals， save our future！ Homework ✍ Finish and polish your composition for 3c and submit it in next class. $