资源简介 Unit 4 Section B (2a~2c) 学案学习目标语言知识:能掌握反义词配对(如below→above),学会用how引导的特殊疑问句描述事物特征,能用正确形式的词汇完成贝加尔湖相关语篇。语言技能:能匹配反义词、创编how开头的问句、完成语篇填空。情感态度:能通过词汇练习了解贝加尔湖的自然奇观,深化对自然景观的认知。学习重难点重点:准确匹配反义词;用how+ 形容词 / 副词创编问句;结合语境完成语篇填空。难点:区分易混反义词(如top→bottom);正确使用词汇的形式(如最高级、动词原形)完成语篇。自主学习(课前完成)词汇预习:写出下列词的反义词:safe:__________high:__________live:__________自我准备:用中文写 1 个关于 “贝加尔湖” 的已知信息(如 “它是世界最深的淡水湖”)。课堂导学环节 1:导入(3 分钟)教师展示 “上下、南北” 的方位图,提问:“What's the opposite of 'below' What about 'northern' ”引入本节课 “反义词与词汇运用” 主题。环节 2:反义词匹配 ——2a(7 分钟)任务说明:将左侧词汇与右侧反义词配对。匹配结果:below → D. abovecommon → E. unusuallow → G. highdead → F. livingtop → B. bottomnorthern → C. southernrisky → A. safesurvive → H. die核对反馈:小组交换答案,明确每对反义词的含义。环节 3:创编how开头的问句 ——2b(8 分钟)示例解析:how+ 形容词 / 副词,用于询问事物的特征(如How far... 问距离)。创编练习:How long is the Nile River How high is Mount Qomolangma How deep is the Mariana Trench How old is the Great Wall How fast can a cheetah run How soon will we arrive at the park 小组分享:每组选 2 个问句,向全班展示。环节 4:语篇填空(贝加尔湖)——2c(10 分钟)练前梳理:词汇的形式与语境:deep→最高级deepest(描述 “最深的淡水湖”);dive(动词原形,“下潜 1620 米”);surface(名词,“湖面面积”);survive(动词原形,“在环境中生存”);wonderful→名词wonder(“自然奇观”)。练中完成:Located in Siberia, Russia, Lake Baikal is one of the world's most famous lakes. It is the deepest freshwater lake in the world. To reach the bottom, you must dive 1,620 metres! It is also larger than most other lakes. Its surface 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 survive in this environment. Today, the lake still attracts many curious travellers. After all, it is a great natural wonder!逻辑分析:小组讨论每个词汇的选择理由(如deepest对应 “世界最深”)。课堂练习一、反义词回顾写出risky和survive的反义词。____________________________________________________________________二、问句创编____________________________________________________________________用how old写 1 个关于 “故宫” 的问句。三、语篇总结用 2 句话总结 2c 语篇中贝加尔湖的 2 个特点。________________________________________________________________________________________________________________________________________参考答案一、risky的反义词是safe;survive的反义词是die。二、示例:How old is the Palace Museum in Beijing 三、示例:Lake Baikal is the deepest freshwater lake in the world, with a depth of 1,620 metres. Its surface covers 31,500 square kilometres, which is bigger than Belgium. 展开更多...... 收起↑ 资源预览