Unit 4 The Wonders of Nature.Section B Vocabulary in Use (2a–2c)导学案 2025-2026学年人教版八年级英语下册

Unit 4 The Wonders of Nature.Section B Vocabulary in Use (2a–2c)导学案 一、学习目标 1. 知识目标 掌握本课核心反义词组：below-above, common-unusual, low-high, dead-living, top-bottom, northern-southern, risky-safe, survive-die 熟练运用 how + 形容词（how long/high/deep/old/fast/soon）结构提问 掌握 deep, survive, wonderful, surface, dive 等词汇在语境中的正确形式与用法 2. 能力目标 能完成2a反义词匹配、2c短文填空，准确运用词汇 能运用 how 引导的特殊疑问句，结合自然奇观主题造句 能在语境中正确使用词汇的形式变化，提升词汇运用能力 3. 素养目标 了解贝加尔湖等世界自然奇观，培养对自然的热爱与敬畏 提升词汇学习的逻辑思维，养成自主积累词汇的习惯 二、课前预习 1. 反义词预习（英汉互译） 英文 中文 对应反义词 中文 below ________ ________ ________ common ________ ________ ________ low ________ ________ ________ dead ________ ________ ________ top ________ ________ ________ northern ________ ________ ________ risky ________ ________ ________ survive ________ ________ ________ 2. how 结构预习 写出下列短语的中文意思： how long ____________ how high ____________ how deep ____________ how old ____________ how fast ____________ how soon ____________ 三、课堂学习任务 任务1：反义词匹配（2a） 将左侧单词与右侧反义词连线（填字母）： 1. below ______ 1. common ______ 1. low ______ 1. dead ______ 1. top ______ 1. northern ______ 1. risky ______ 1. survive ______ 选项： A. safe B. bottom C. southern D. above E. unusual F. living G. high H. die 任务2：how 结构造句（2b） 参考例句，用方框中的单词（long, high, deep, old, fast, soon）完成句子： 例句：How far is it from your home to school? How heavy is a blue whale? 任务3：短文填空（2c） 用方框中单词的正确形式完成短文： deep, survive, wonderful, surface, dive Located in Siberia, Russia, Lake Baikal is one of the world’s most famous lakes. It is the ______ freshwater lake in the world. To reach the bottom, you must ______ 1,620 metres! It is also larger than most other lakes. Its ______ covers 31,500 square kilometres. That is bigger than the country of Belgium! Lake Baikal is cold most of the year. But over 1,200 different types of animals can still ______ in this environment. Today, the lake still attracts many curious travellers. After all, it is a great natural ______! 任务4：词汇拓展与运用 1. 用本课反义词组，各造1个句子： below & above：____________________________________________________ common & unusual：____________________________________________________ 2. 用 how + 形容词 结构，写2个关于自然奇观的问句： 四、课堂小结 1. 核心词汇回顾 反义词组：below-above, common-unusual, low-high, dead-living, top-bottom, northern-southern, risky-safe, survive-die how 结构：how long/high/deep/old/fast/soon 引导特殊疑问句 重点词汇：deep, survive, wonderful, surface, dive 2. 贝加尔湖核心信息 世界最深的淡水湖，深度达1620米 面积31500平方公里，生存超1200种动物，是世界自然奇观 五、课后作业 1. 背诵本课反义词组与 how 结构句型 2. 完善2b的6个句子，誊写工整 3. 拓展任务：查阅资料，用英语写3句话介绍贝加尔湖 答案 任务1：2a 反义词匹配答案 1. D (above) 2. E (unusual) 3. G (high) 4. F (living) 5. B (bottom) 6. C (southern) 7. A (safe) 8. H (die) 任务2：2b 造句参考（示例） 1. How long is the Nile River? 2. How high is Mount Qomolangma? 3. How deep is Lake Baikal? 4. How old is the Grand Canyon? 5. How fast can a cheetah run? 6. How soon will the volcano erupt? 任务3：2c 短文填空答案 1. deepest 2. dive 3. surface 4. survive 5. wonder 学科网（北京）股份有限公司 $