Unit 4 Amazing Plants and Animals Section B (3a～3c) 学案 2026-2027学年英语人教版（2024）八年级上册

该初中英语导学案围绕“蓝鲸与海洋生态”展开，引导学生学习蓝鲸的体重、栖息地、食物、寿命及生态作用等核心知识，通过课前词汇预习表和阅读预测搭建学习支架，激活已有认知，为课堂阅读写作做好衔接。 资料以“阅读-改写-评价”任务链设计，通过快速阅读提炼主旨、精读填表梳理信息、第一人称改写实践语言表达，结合同伴评价和保护蓝鲸讨论，有效提升学生语言能力和学习能力，培养社会责任感与人类命运共同体意识，助力自主学习与思维发展。

Unit 4 Amazing Plants and Animals — Section B (3a~3c) 学案 —— 阅读写作课：蓝鲸与海洋生态 2026-2027学年 人教版八年级上册 班级 姓名 学号 日期 课题 Unit 4 Section B (3a~3c): 阅读写作课 — 蓝鲸与海洋生态 板块一：课前预习 Pre-class Preview ❶ 词汇预习表 请预习以下单词和短语，写出中文释义： 单词/短语 词性 中文释义（预习填写） blue whale n. as much as 短语 tiny adj. lively adj. ecosystem n. up to 短语 except prep. lifespan n. ocean n. protect v. ❷ 阅读预测 What do you know about blue whales? I know that blue whales ________________________________________ Because ____________________________________________________ 板块二：课堂探究 Class Exploration ❶ Fast Reading 快速阅读 Read the text fast and answer: What's the main idea of the text? ________________________________________________________________ ❷ 3a 精读完成表格 Complete the table about blue whales: Category Information Weight Home Food Lifespan Role ❸ 3b 第一人称改写 Imagine you are a blue whale. Use the first person to rewrite the paragraph: Hello everyone! My name is Billy the Blue Whale. I am ___(描述自身情况、体重)___ I'm heavy, but I love ___(从蓝鲸角度说喜欢游泳)___ I live in ___(说明生存区域)___ My favourite food is ___(阐述食物喜好)___ I can eat ___(阐述食量)___. ❹ 改写规则总结 将以下句子改为第一人称： 1. The blue whale is the largest animal on earth. → ________________________ 2. It can weigh as much as 200 tons. → ________________________ 3. Its favourite food is tiny animals. → ________________________ 4. They live in all oceans. → ________________________ ❺ 3c 同伴评价 按照评价维度自查和互评： □ 人称转换准确 □ 内容完整 □ 语言正确 □ 语气亲切自然 板块三：课堂练习 Class Practice I. 核心句型练习 1. 非洲象是地球上最大、最强壮的陆地动物之一。（one of the...） __________________________________________________________________ 2. 蓝鲸的重量可达200吨。（as much as） __________________________________________________________________ 3. 蓝鲸可以活到90年。（up to） __________________________________________________________________ 4. 蓝鲸在我们的世界中发挥重要作用。（play an important role in） __________________________________________________________________ II. Think and Discuss What can we do to protect blue whales? ________________________________________________________________ ________________________________________________________________ 板块四：课后作业 Homework 1. 根据评价指标，完善课堂3c写作，形成一篇完整的短文。 2. 思考我们可以做些什么保护蓝鲸，下节课分享。 3. 复习本课核心句型：as much as, up to, one of the..., play an important role in。 4. 预习下一课时的内容。 板块五：参考答案 ❶ 词汇预习表答案 blue whale 蓝鲸 | as much as 多达/高达 | tiny 微小的 | lively 生机勃勃的 | ecosystem 生态系统 | up to 最多/高达 | except 除...之外 | lifespan 寿命 | ocean 海洋 | protect 保护 ❷ 3a表格答案 Weight: As much as 200 tons Home: All oceans except the Arctic Ocean Food: Some of the tiniest animals in the ocean Lifespan: Up to 90 years Role: Become food for many sea animals when dying and help create a lively and healthy ecosystem ❸ 3b改写参考答案 Hello everyone! My name is Billy the Blue Whale. I am the largest and heaviest animal on earth. I can weigh as much as 200 tons. I'm heavy, but I love swimming. I live in all oceans except the Arctic Ocean. My favourite food is some of the tiniest animals in the ocean. I can eat around four tons of these tiny animals a day. ❹ 改写规则答案 1. The blue whale is the largest animal on earth. → I am the largest animal on earth. 2. It can weigh as much as 200 tons. → I can weigh as much as 200 tons. 3. Its favourite food is tiny animals. → My favourite food is tiny animals. 4. They live in all oceans. → We live in all oceans. ❺ 核心句型答案 1. The African elephant is one of the largest and strongest land animals on earth. 2. The blue whale can weigh as much as 200 tons. 3. Blue whales can live up to 90 years. 4. Blue whales play an important role in our world. Think and Discuss参考答案 1. Reduce ocean pollution.（减少海洋污染——不乱扔垃圾，减少塑料使用） 2. Support whale protection organizations.（支持蓝鲸保护组织——捐款或参与志愿者活动） 3. Spread awareness about whale protection.（传播蓝鲸保护意识——告诉更多人蓝鲸的重要性） 4. Call on people to protect our oceans.（呼吁人们保护海洋——保护海洋就是保护蓝鲸的家园） 学科网（北京）股份有限公司 $