Unit 1 The Changing World Section A 2a-2d 课件 2026-2027学年人教版英语九年级上册

该初中英语课件围绕“家乡变化”核心主题，通过李瑞家乡交通、公共设施、环境的今昔对比导入，搭建“变化描述—问题分析—解决措施”的学习支架，衔接听力填空、对话讨论等活动，帮助学生系统掌握相关语言知识。 其亮点在于融合语言能力（听力理解、对话表达）、思维品质（问题排序与解决分析）和文化意识（环保行动体现家国情怀）。采用“词汇拆分+语境应用”教学法，如“sandstorm”拆分教学，结合视频直观展示变化，助力学生提升语言运用能力，教师可通过结构化活动提高教学效率。

毛素，蒙语意为南生草木的土地。山西右玉地处毛乌素沙漠东部，贫瘠曾是这片土地的标签。在这个地方种树都不容易，种活一棵树也可以说比养活一个孩子还要难。十万幼育人，一代又一代接力，让一亿多棵树在这里落地生根。绿色版图从山西右玉向西推进了300公里。小朋友，你看爷爷怎么栽树啊。可以先吃翠花一个。可以，你看，然后把梳子拿下来。宁夏灵武地处毛乌素沙漠西部，每一位领导人都会种树。三十多年来，这里的人们治沙造林六十多万母，控制流沙面积一百多万亩，将绿色向东推进了几十公里。高速沙漠南端的延安也曾是中国生态最脆弱的地方之一，近八成面积水土流失。短短20年间，延安退耕还林上千万。如今，延安3点7万平方公里的土地上，有60年前的飞机播种造林，有40年前种下的三北防护林，还有20年前天然林保护工程和退耕还林工程种下的林木，不同时期的林子今天完全连成一个整体。陕西绿色版图向北延伸400公里，又欲向西陵伍向东，延安向北，毛乌素沙漠一万多平方公里流沙止步生绿，80%水土不再流失，茫茫荒漠变成一片绿洲。连接西北、华北和东北的3014万公顷三北防护林，防风固沙、涵养水源、调节气候，是守护400万平方公里北方国土的绿色长城。绿色是生命的底色。几十年来中国坚持不懈为神州大地披装绿色，全国森林覆盖率已由上世纪70年代初的12.7%提高到2020年的23.04%，中国森林净增长量世界第一。 Unit 1 The Changing World Section A 2a-2d Review and say Li Rui’s hometown has changed greatly. Traffic (交通) It took to reach the town. With the new road, it takes only nearly. Going to school by bus takes only . Going to school takes only . half a day 40 minutes an hour 15 minutes Review and say Li Rui’s hometown has changed greatly. Public facilities (公共设施) They used to to see a doctor. The town has built a new . They didn’t have good places for . They now have a down the street travel far hospital shopping supermarket Review and say Li Rui’s hometown has changed greatly. Environment (环境) They are now covered with . The hills were covered with . sand beautiful trees New Roads New Supermarket Shorter travel time New hospital Green Hills Besides these good changes, there were also some problems . Let’s look at 2a. What problem may people face ? water shortage farmland shortage lack of technology sand+storm sandstorm [ s nd st m] n.沙尘暴 Sandstorms hurt people's health. Sandstorms take the soil and make the fields smaller. [s l] n.土壤 [fi ld] n.田地 What problem may people face ? farmland shortage lack of technology water shortage [ t d ] n.短缺 People can't live or grow food well. What problem may people face ? lack of technology farmland shortage [ f m l nd] n.农田;耕地 farm+land There is not enough food. What problem may people face ? lack of technology [l k] n.缺乏;缺少 People don't have machines to help, they must work by hand. [m i n] n.机器;机械 sandstorm water shortage farmland shortage lack of technology Rank the following problems from 1 to 4, with 1 being the worst . Give your reasons. 2a I think is the worst, because. sandstorm it hurts people's health sandstorm water shortage farmland shortage lack of technology Listen to the conversation between George’s father and Li Rui’s grandfather. What problems in 2a did they mention? 2b Listen and fill in the table . How has the environment affected local lives? 2c Past • There used to be all the time, and the were getting smaller and smaller. • Locals worked by . Action • Locals found a bush. It had roots that could the soil together. • They began planting it in sandy , with the government’s support. • They had to help. Present • The corn fields are . • They have planted many bushes and since then. • There are sandstorms now and the environment is getting . • It has improved local lives. n. n. n. adj. v. n. n. adj. n. adj. adj. Listen and fill in the table . How has the environment affected local lives? 2c Past • There used to be all the time, and the were getting smaller and smaller. • Locals worked by . Action • Locals found a bush. It had roots that could the soil together. • They began planting it in sandy , with the government’s support. • They had to help. Present • The corn fields are . • They have planted many bushes and since then. • There are sandstorms now and the environment is getting . • It has improved local lives. sandstorms fields hand long hold areas machines huge trees fewer better 过去有(现在没有了) n.当地人 adj. 当地的 n.根 n.土壤 在政府的支持下 从那以后 改善当地生活 沙地 Listen again and check the answers. 2c Bob: I’m amazed by how green your hometown has become! Grandpa: Have you seen the corn fields outside of the town yet? Bob: Yeah! They’re huge! Grandpa: There used to be sandstorms all the time, and the fields were getting smaller and smaller. Then, after one big sandstorm, we decided to do something. Bob: What did you do? Grandpa: We found a small bush. It had long roots that could hold the soil together. We began planting it in sandy areas. The government provided support too. Bob: Wasn’t it difficult to plant so many bushes? Grandpa: Yes, it was. At the beginning, we worked by hand. Later, we had machines to help. We have planted many bushes and trees since then. There are fewer sandstorms now and the environment is getting better. It has also improved our lives. Everyone has become richer and happier. Past Action Result Environmental problems 课本p94-95 Discussion Transportation government support people’s hard work Li Rui's hometown Shopping Medical care Environment Changes in Li Rui’s hometown. Past (sandstorms, smaller fields ) Action (a bush with long roots, Planted,First by hand, later with machines.) Present (fields are huge; fewer sandstorms; environment getting better; people are richer and happier.) Bob is George's father. He meets his old friend Li Rui's grandfather after 20 years. Bob is amazed by the green town and big corn fields. Grandpa tells Bob there used to be 1. , and farmland became smaller and smaller. Villagers decided to make a change. They planted bushes with long roots that could 2. on sandy land. The government also 3. . At first, villagers 4. to plant bushes. Later , machines helped them. Now there are fewer sandstorms. The environment gets better and it has 5. . Everyone becomes richer and happie Practise Let’s thlk. 2d Discuss how the problems in 2b were solved. A: The area used to be covered with sand. B: What did they do to solve this problem? A: They planted bushes and trees. The land has become Every big change starts with a small step. The future of our hometown is in our hands. Watch a video Bob is George's father. He meets his old friend Li Rui's grandfather after 20 years. Bob is amazed by the green town and big corn fields. Grandpa tells Bob there used to be 1. , and farmland became smaller and smaller. Villagers decided to make a change. They planted bushes with long roots that could 2. on sandy land. The government also 3. . At first, villagers 4. to plant bushes. Later , machines helped them. Now there are fewer sandstorms. The environment gets better and it has 5. . Everyone becomes richer and happier. A. sandstorms all the time B. hold the soil together C. worked by hand D. provided support E. improved people'’s lives B D A E C 下 课 Lavf61.7.100 $