Unit5 Lesson5-6课件 2025-2026学年冀教版八年级英语下册

该初中英语课件围绕“Great inventions”主题，涵盖冰箱发展时间线及中国古代发明。课堂导入通过生活提问激活认知，时间线从古代冰/雪保存食物到现代节能冰箱逐步展开，中国发明结合历史文化，搭建连贯知识支架。 其亮点在于时间线梳理与文化融合，通过具体年代、人物事件培养思维品质，中英文对照及重点词汇标红提升语言能力，中国发明案例增强文化意识。练习题巩固知识，助力学生主动学习，教师可高效开展教学。

Unit 5 Great inventions Lesson 5 Refrigerator timeline Lesson 6 Great inventions of ancient China 23021 What is it? Is there any in your family? What things do you usually put into it? What information do you know about it? Lead in 23021 新课讲授 希腊 罗马 保存 冷藏 v.冷冻，结冰 23021 1600 - 1700 冰窖 23021 1700 - 1800 威廉·卡伦 实验 人造的，人工的 冷却，致冷 23021 1800 - 1900 奥利弗·埃文斯 制冷机 冰柜 打算给 23021 1900 - 2000 1913: Fred W. Wolf invented the first home electric refrigerator. 1918: Mass production of home refrigerators began. 1920s: Refrigerators became popular in some countries. 1940s: Freezer compartments were added. 1980s: Water dispensers were added. 1996: Refrigerators became more energy-saving. n.冰箱 n.能量，能源 弗雷德·W·沃尔夫 批量生产 冷冻室 饮水机 23021 √ 1 Read the timeline and tick the inventor of the first refrigerator. □ William Cullen □ Oliver Evans □ Fred.W.Wolf 2 Read the timeline again and circle the correct answers. A When did refrigerators become popular in some countries? a. In the 1920s b. In the 1800s. c. In the 1980s B What was true about using refrigerators in the 1990s? a. A refrigerator was considered a luxury item. b. The running cost of a refrigerator is so high that no one could afford one. c. Energy-efficient refrigerators had become the new normal 运行成本 奢侈 23021 23021 23021 重要的，有重大意义的 2500 tool 算盘 商人 银行家 计算 23021 source rich 豆腐 起源 源头 蛋白质 菜肴 23021 n.皇帝 accidentally 一壶… 23021 the Han Dynasty 瓷器 追朔到 23021 silkworms 丝绸 茧 蚕 见证 光辉 思想家 23021 Lavf58.20.100 Lavf58.20.100 $