Unit1 Section B(2a-2c) 课件 2026-2027学年人教版九年级英语上册

该初中英语课件围绕“复合词构成规律”与“环境变化”主题，核心知识点包括复合词（如sandstorm, highway）、重点词汇（narrow, wide, villager）及词性转换（sand→sandy）。课堂导入通过sand, storm到sandstorm的词汇关联，搭建从已知到未知的学习支架，衔接词汇预习与新知学习。 其亮点在于融合词根词缀速记（如villager=village+-er）和复合词分类练习（2a匹配、2b填空），提升语言能力。塞罕坝生态故事及中国环保成就（如毛乌素沙地、长江禁渔）的融入，培养文化意识与家国情怀。分层作业（A/B/C层）满足不同学生需求，助力学习能力发展。学生能提升词汇应用与文化认知，教师可获得结构化教学资源与分层教学支持。

Unit 1 The Changing World Section B 2a-2c How changes influence us？ 目录 新单词预习 Vocabulary 课堂导入 Lead in 新知学习 Knowledge 课堂巩固练习题 Exercise 课堂小结 Summary 分层课后作业 Homework Vocabulary 词根词缀拆解速记 1. narrow /ˈnærəʊ/adj. 狭窄的 无典型词缀，拆分记忆：nar + row 联想：row（一排）， 通道只有一排宽→狭窄的 2. villager /ˈvɪlɪdʒə(r)/n. 村民 词根：village n. 村庄 后缀：-er 表人（做某事 / 某地的人） village（村庄）+ -er → 住在村庄里的人→村民 3. the Olympics /əˈlɪmpɪks/ 奥林匹克运动会 词根：Olympic adj. 奥林匹克的 后缀：-ics 表某项运动、赛事 Olympic（奥林匹克的）+ -s → 奥林匹克赛事 4. lead /liːd/v. 带领；n. 领先 变形：过去式 / 过去分词 led /led/ 派生词拓展： leader n. 领导者（lead + -er 表人） leadership n. 领导地位（lead + -ship 表抽象名词） 5. man-made /ˌmænˈmeɪd/adj. 人造的；非天然的 合成词构词：man（人类）+ made（被制造的） → 人类制造出来的→人造的 6. miracle /ˈmɪrəkl/n. 奇迹 词根记忆：mir- = 惊奇、看 同根词：mirror n. 镜子（让人惊奇观看的物品） mir（惊奇）+ -acle（名词后缀，表事物） →令人惊奇的事→奇迹 翻译句子： The villager took the narrow man-made road to lead us to watch the Olympics, and we thought it was a miracle. 中文翻译： 这位村民带领我们走这条狭窄的人造道路去观看奥运会，我们认为这是一个奇迹。 Lead in sand storm sandstorm Compound words 一、定义 由两个或多个独立单词拼合，组成一个新单词，词义结合两个单词含义，这类词叫复合词。 例：butter（黄油）+ fly（苍蝇）= butterfly 蝴蝶 二、书写形式 1. 合写为一个单词：butterfly 蝴蝶 2. 中间加连字符： man-made 人造的 三、复合名词构成规律 1.名词 + 名词 = 复合名词 arm (手臂) + chair (椅子) = armchair 扶手椅 2.形容词 + 名词 = 复合名词 black (黑色) + board (板) = blackboard 黑板 3.介词 / 副词 + 名词 = 复合名词 out (外面) + door (门) = outdoor 户外 2a Use a word on the left and a word on the right to create a compound word. green sand high farm rail storm way land house road greenhouse, ＝ ＋ sandstorm 沙尘暴 highway / highroad 高速公路 / 公路、大道 farmland / farmhouse 农田、耕地 / 农舍、农场住宅 railway / railroad 铁路 (英式) / 铁路 (美式) What other compound words do you know? 1.复合形容词 world (世界) + famous (著名的) = world-famous 世界闻名的 man (人类) + made (制造) = man-made 人造的 five-star 五星的；ten-minute 十分钟的 easy-going 随和的 2.复合动词 over (越过) + come (来) = overcome 克服 water (水) + proof (防) = waterproof 防水 3.复合副词 / 复合代词 some + thing = something；every + one = everyone may + be = maybe；out + side = outside 2b Complete the sentences with the words in the box. product corn bridge wide capital 1. The road used to be narrow and dirty. Now, it is _________ and clean. 2. The _________ made it convenient for the villagers to travel across the river to the city. 3. Beijing, China’s _________, hosted the 2008 Summer Olympics and the 2022 Winter Olympics. 4. Our farm has a lot of laying hens. They feed on ______, vegetables, and insects. 5. Look! This is a digital _________ that only sells online. wide bridge capital corns product In 1962, Wang Shanghai moved with his family from their house in Chengde to the ________ lands of Saihanba. There were few trees to hold the ______ together, and there were often ___________________. Temperatures were below freezing during the winter. Life there was very difficult. 2c Complete the passage with the correct forms of the words in the box. government bush sandstorm result sandy soil sandy soil sandstorms With support from the ____________, Wang Shanghai led a group of 369 people who were determined to make the environment of Saihanba better. Over the next 60 years, workers planted ________ and trees, creating the world’s biggest man-made forest. Today, Saihanba is known as “the green miracle”. This is the ________ of hard work and people working together. Now, the land is covered with green trees and the water is clean and fresh. government bushes result What other stories do you know about China’s environmental achievements? Besides Saihanba and Wang Shanghai, I know four great environmental stories in China. First, Yin Yuzhen fought the Maowusu Desert for 40 years and built a big oasis. Second, the 10-year fishing ban on the Yangtze River brings back fish and finless porpoises. Third, people in Youyu spent 70 years turning bare sand into thick woods. Fourth, the Three-North Shelter Forest works as a Green Great Wall to cut sandstorms. All of them show Chinese people’s long efforts to protect our environment. 尹玉珍奋战毛乌素沙地四十年，造出大片绿洲。 长江十年禁渔让鱼类、江豚重新繁衍。 右玉人民花七十年把荒沙变为茂密林地。 三北防护林如同绿色长城，大幅阻挡沙尘暴。 Exercise 一、单词变形填空（核心考点：词性转换、名词单复数） government, bush, sandstorm, result, sandy, soil The ________ (sand) land of Saihanba was dry and empty long ago. Few plants could grow to hold the _________ (soil) in place. People often suffered from strong _________ (sandstorm) in winter. With help from the local ____________ (government), villagers began to plant trees. Workers grew lots of _________ (bush) and pines on the hills. The thick forest is the _________ (result) of sixty years’ hard work. sandy soil sandstorms government bushes result 二、用重点短语或句型造句 used to be … 过去曾经是…… The place used to be sandy land. 2.With support from …, sb. led a group of people to do … With support from the government, Wang Shanghai led people to plant trees. 3.This is the result of … The big forest is the result of hard work. 4.be covered with … 被…… 覆盖 Now the land is covered with green trees. Summary （一）核心语法：复合词 Compound Words 定义：两个独立单词拼接构成新词，词义结合两词含义 green + house = greenhouse 温室 sand + storm = sandstorm 沙尘暴 high + way = highway 高速公路 high + road = highroad 大路,公路 farm + land = farmland 农田 rail + way = railway 铁路 rail + road = railroad 铁路 （二）重点词汇 1.核心名词 bridge 桥；capital 首都；corn 玉米；product 产品 government 政府；soil 泥土；bush 灌木；sandstorm 沙尘暴 2.词性转换 sand n. 沙子 → sandy adj. 沙地的、多沙的 result n. （三）重点单词与变形 形容词反义词 narrow（狭窄的） ↔ wide（宽阔的） （四）固定搭配与句型 used to be… 过去曾经是……（现在不一样） make it convenient for sb. to do sth. 使某人做某事很方便 feed on 以…… 为食 with support from… 在…… 的支持下 be determined to do sth. 下定决心做某事 as the result of …… 的结果 be covered with 被…… 覆盖 （五）阅读主题：塞罕坝生态故事 关键词：sandy lands 沙地；hold soil 固土；sandstorm 沙尘暴；government 政府；bush 灌木；green miracle 绿色奇迹 主旨：王尚海带领群众改造塞罕坝荒漠，创造人工林海生态成就。 Homework A 层 基础巩固（全体必做） 抄写本页 12 个复合词，每个单词 + 中文抄写 2 遍 背诵 2b、2c 所有黑体单词，默写词义 朗读塞罕坝短文 3 遍，读懂每句中文意思 B 层 能力提升（中等及以上） 完成 A 层全部任务 用 used to be /feed on /be covered with 各造 1 个英文句子 用 5 句话复述塞罕坝短文大意 额外写出 5 个课外复合词（如 classroom, sunflower） C 层 拓展拔高（尖子生选做） 完成 A、B 层全部任务 小作文（60 词）：One of China’s environmental achievements（任选塞罕坝 / 毛乌素 / 长江禁渔） 整理本页词性转换（sand→sandy），再积累 3 组名词变形容词例子 口头回答问题：What can we learn from Wang Shanghai and Saihanba? 写下英文回答 $