Unit 2 Saving the earth. Topic 2 Section A 课件 2025-2026学年仁爱科普版（2012）英语九年级上册

该初中英语课件围绕“Saving the Earth”主题，聚焦沙尘暴成因及树木重要性，涵盖sand、desert等词汇，change into、stop...from...等短语，以及As a result...等核心句型。课堂导入通过复习Topic 1污染类型，结合图片对比（森林与砍伐后土地）、沙尘暴形成过程排序活动，搭建从已知到未知的学习支架，衔接前后知识。 其亮点在于融合语言能力（听力选择、对话填空、语法练习提升理解与表达）、思维品质（排序活动培养逻辑思维，earth/soil等词汇辨析提升分析能力），含音频材料及学习方法建议（整理错题、固定搭配学习）。学生能在情境中掌握语言知识，教师可借助结构化活动高效开展教学，助力核心素养培养。

Unit 2 Saving the Earth Topic2 All these problems are very serious Section A 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 Learning aims： 1. Learn some new words and phrases: sand, sandstorm, desert, although, change into, human being, stop...from... 2. Learn some useful sentences: (1)As a result, a lot of rich land changed into desert. (2)Trees can stop the wind from blowing the earth away. 3. Know the importance of trees. 4. Cultivate students’ awareness of caring for nature. Review:What pollution do we have learned in topic 1? Pollution will cause many serious problems. air pollution light pollution litter water pollution soil pollution noise pollution 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 What kind of weather is it? It’s a kind of storm caused by sand. sandstorm Lead in Do you know how sandstorms come into being? 你知道沙尘暴是怎么形成的吗？ rainstorm snowstorm 4 Long time ago, there were lots of trees and forests. But human beings needed some wood to build houses and do other things, so they cut down the trees day by day. cut down many trees 5 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 forests gone wash the earth away The rain washed the earth away.The forests have gone. 6 A lot of rich land has changed into desert because people have cut down too many trees. change into desert 转换成，变成 沙漠 7 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 sandstorms As a result, the sandstorms come into being. 8 给沙尘暴的形成过程排序 3 Do you know how sandstorms come into being? 4 1 5 wash the earth away many trees change into desert ( ) ( ) ( ) ( ) ( ) ( ) 3 6 2 forests gone sandstorms come into being cut down trees 9 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 Kangkang, Maria and Jane are talking in a room. What are they talking about ? The boy and girls are talking about ___________. different types of sandstorms the reasons for sandstorms sandstorms in different cities 1b Listen to 1a and choose the best answer. B 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 Listen to 1a and fill in. What is the weather like? It’s _____.The wind is blowing strongly. 2. What causes these sandstorms? People have____ ____ too many trees. 3. How can trees affect the weather? (1)Trees can ______ the wind_______ blowing the earth away. (2) A lot of water can ____ ________by forests. (3) Trees can prevent the water from ________ the earth ______. bad cut down stop from be saved washing away 1c Read 1a and complete trees'functions. B. A lot of water can be saved by forests A. Trees can stop the wind from blowing the earth away. C.They can also stop the water from washing the earth away. 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 (Kangkang, Maria and Jane are talking in a room. The wind outside is blowing strongly.) Maria: What a strong wind! Kangkang: Yes. But it’s better than the last few years. There were sandstorms before. While I was walking down the street, I couldn’t see anything. The sand really hurt my face. Maria: Why was the weather so bad? Jane : People cut down too many trees. As a result, a lot of rich land changed into desert. Trees can stop the wind from blowing the earth away. 14 Kangkang: And a lot of water can be saved by forests. Jane: Trees can also stop the water from washing the earth away. Maria: Cutting down trees affects the weather so much. Kangkang: Yes. It is harmful to human beings, animals and plants. Although there were sandstorms before, now we have built “The Green Great Wall”. Our environment has become much better. 15 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 16 2 Complete the sentences with the correct forms of the given phrases in the box. as a result, change into, do something, stop…from, blow…away 1. People have cut down such a large number of trees that the land ______________desert. 2. There are fewer trees left, so the wind always _______the earth ________. 3. Air pollution has become a serious problem, so we must______________ to reduce it. 4. we should try our best to ______ people ______ cutting down the trees. 5. In the future, human beings can protect the trees well. _____________, animals will live a happy life in the forest. has changed into blows away do something stop from As a result 17 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 4 A. Listen to the passage and circle the phrases you hear. become weaker destroy the environment disappear rapidly on the earth enough bamboo to eat 4 B. Listen again and fill in the blanks. 1. Now some kinds of animals are becoming ______ ______ _______. 2. Some animals are_____ ______ ____dying out completely. 3. In the past, pandas lived a quiet life and had ________ ______food. 4. Humans have _____ _____ ______________ the importance of protecting animals. 5. We should ______ ______ ____to protect them. do our best in danger of plenty of come to understand fewer and fewer 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 Key points: 1. While I was walking down the street , I couldn’t see anything. (1) when 表示 “当......时候” + 延续性v./短暂性v. while 表示 “当......时候” 只能 + 延续性v. eg. We were watching TV __________ the light went out. ____________ we were watching TV, the light went out. (2) while 有“尽管”之意 = although/though, 放在句首 eg. _____________ she is a top student, she has some shortcoming. (3)while “然而” ，表对比。 eg. He is tall and thin _________ I am short and heavy. when When/While While/Though/Although while 2. A lot of rich land has changed into desert.. change... into = turn... into 把......变成...... eg. She is waiting for the traffic lights to __________ green.. 3. Trees can stop the wind from blowing the earth away. (1). stop sb. (from) doing sth. 阻止某人做某事 = prevent sb. (from) doing sth. = keep sb. from doing sth. (keep sb. doing sth. 让某人一直做某事) eg. The heavy rain has prevented us from _______ (go) there. The heavy rain _________ (stop) taxi drivers from ________(drive) too fast and carelessly last night. going stopped driving change into/ turn into 21 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 (2). 辨析earth；soil；ground；land earth （相对于天空、海洋而言的）地面，地球，泥土 soil 土地、土壤，尤指生长植物的土地。 ground 地、地面, 主要指大地表面，泥地/沙地或水泥地 land 陆地，土地，田地，国土 4.Cutting down trees is harmful to human beings, animals and plants. cutting down trees是________词短语在句子中作______语，谓语用______数。 练习：1)散步是我的爱好。 Walking ______(be) my hobby. 2)打乒乓球很有意思。 Playing ping-pong ____(be) great fun. 3)阅读使人完美。 Reading _______(make) a man perfect. cut down “砍倒” 代词放中间（代中原则） eg. Trees are useful to us. We shouldn’t ___________. A. cut down them B. cut down it C. cut it down D. cut them down In the past, people ______________ . A. cut down trees B. cut trees down 动名 主 单 is makes is D A/B 23 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 及时练习2 1. 纵然我失败了，我还是要尝试。 ________________ I fail, I shall try again. 2. 尽管他累了，还帮我干活。 ______ _________ he was tired, he helped me with my work. Though/Although Even if/ Even though 24 6. People have cut down such a large number of trees that the land has changed into desert. a number of “许多” (修饰主语，谓语当做复数） the number of “......的数量” (作主语，谓语用单数） 用what’s 来提问，用large/small来修饰。 eg. A number of students __________ (have) the same problem. The number of the students in our school ______ (be) over 3,000. 及时练习3 1. ______ wild animals around is becoming smaller and smaller. A. The number of B. A number of C. The numbers of D. Number of 2. — _____ the number os the books in our library? —Over 5,000 copies. A. How many is B. What are B. How much is D. What is 3. A number of students ______________ (plant) trees in the hill now. have is A D are planting 25 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 7. …I couldn’t see anything. …we still need to do something to protect the environment. 1).anything_______； something________________ 链接：-body/ -where 任何事 一些事，某些事 不定代词和副词 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 -one -body -thing some- any- every- no- 一、分类 1.复合不定代词 someone somebody something anyone anybody anything everyone everybody everything no one / none nobody nothing 2、表示“三三两两”的不定代词 指两人或两物 指三者或三者以上的人或物 每一个 任何一个 另一个 都 都不 each every either any (the) other another both all neither none/no one 词义 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 3. 其他不定代词 some, any few, a few, little, a little many, much one, several 4.不定副词 somewhere, everywhere, nowhere, anywhere 二、用法 肯定句 否定或疑问句 通用 指人 指物 someone somebody everyone everybody anyone anybody everyone everybody nobody no one something everything anything everything nothing 1.基本用法 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 (1)当希望得到肯定答复,或表建议、请求时, something, somebody, someone也可以用于疑问句中。 Would you like something to drink? (2)anything, anybody, anyone 用于肯定句时，意为： “任何人；任何事物 Anybody can do it except Tom. 注意： 2. 形容词, 不定式或else修饰不定代词，要放在后面。 eg： I have something important to tell you. I want something to drink. I don’t know anything else about it. 3.不定代词作主语时谓语动词要用单数。 eg: Nobody ___ in the classroom. Something ___ wrong with your bike. is is 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 4. nothing ,nobody, none, no one, nowhere 等本身具有否定意义, 表示全否定。 Nothing is impossible. Nobody likes it. everything, everybody, everyone等用于否定句中, 则表示部分否定。（主语否定或谓语否定） eg: Not everybody likes it. Not everything goes well. 5.在反意疑问句中， 表示人的不定代词作主语，主语用 they 或 he； 指物的, 主语用it. Everyone is here, ___________________? Everything goes well,__________? aren’t they (isn’t he) doesn’t it Nobody in our class can stop him from talking, __________? Everything in this house is new, ______? Everyone in this school should wear school uniforms,__________________? can he/they isn’t it shouldn’t he/they 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 6. both & neither (1)both表示“两者都…” ，置于be 后, 实情助前。 Both可用来修饰名词或代词， both of +名词复数或代词（宾格）的复数 注意：如果名词或代词前有限定词，则用both of … 他们俩都会下象棋。 They _____ ______play chess. = ______ ____them can play chess. 我们俩英语考试都及格了。 We both passed the English exam. = Both of us passed the English exam. 我父母都是工程师。 My parents are both engineers. = Both of my parents are engineers. both can Both of both & neither (2)neither 表示“两者都不…”，谓语动词为单数。 父母都不关心这个孩子。 Neither parent cares about the child. 这两把笔都不是我的。 Neither of the pens is mine. 他们俩都没去过纽约。 Neither of them has been to New York. 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 6. all & none (1) all 表示“三者或三者以上都…”，置于be 后, 实情助前。 所有的无家可归者都已经重返工作岗位了。 All of the homeless have returned to work. The homeless all have returned to work. 我们都习惯当地的交通。 All of us are used to the local traffic. We are all used to the local traffic. 所有的措施都效果良好。 All of the measures work well. = The measures all work well. (2)none 表示“三者或三者以上都不…”， 常用“none of…” none of + [c]n. pl 谓语用复数或单数都可 none of + [u]n. 谓语用单数 没有一个措施是有用的。 None of the measures is / are useful. 没有一滴水是干净的。 None of the water is clean. 他们没有人喜欢滑雪。 None of them likes / like skiing. 我不认识他们任何一个。 I know none of them. 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 10. either (1) either…or… 不是这对双胞胎，就是汤姆正在表演。 Either the twins or Tom is acting. (2) either of sth. either of + [c]n. pl （谓语动词为单数） 这两种办法都解决这个问题。 Either of the methods solves the problem. (两者之中)任一的 11. other, others, another one….the other: 两者中的另一个 I have two pens, one is red, and the other is blue. some….others：一些……另一些 We are cleaning our classroom. Some are sweeping the floor, others are cleaning the window. another: 另一个，再一个（三个以上） I don’t like this dress. Please show me another one. 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 三、区别 1. no one VS none (1) no one-----只能指人,不能与of 连用，谓语动词单三 。 没有人知道怎么解决这个问题。 No one knows how to solve the problem. 没有人去过那里。 No one has been there. 注意：对“no one”提问通常用“who”. Who knows how to solve the problem? Who has been there? (2) none-----指人/物；可与of连用，对“none”提问用“How many/much”. None of the boys will go there. None of the water is clean. 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 2. everyone VS every one everyone表示“每人，人人，大家”，= everybody, 只指人不指物，不接of短语，强调整体,作主语时 谓语动词用单数。 Everyone knows him ,___________________? every one表示“每一个，人人，每个人”，既可指人， 又可指物,可接of短语，强调个体。 Every one of us likes English. His books are wonderful. I have read every one of them. He washed every one of the apples. (指人) （指物） （指物） don’t they/doesn’t he 3.nobody,no one, nothing只能单独使用,不与of 连用． 　Nobody / No one can speak French. =None of them can speak French. 4. nothing 回答what 问句； nobody, no one 回答Who问句; none 回答How many/How much 问句 What’s in the room? ---Nothing. Who is in the room? ---Nobody./No one. How many people are there in the room? ---None. 系统掌握英语学习方法至关重要，跨文化交际需录制播客能有效加快阅读速度。教育专家建议，学习日常谚语能有效增强动机。克服学习障碍，参与线上交流能有效理解文化差异。打好英语基础，进行速读训练能有效发展批判思维。高效学习英语，整理错题笔记能有效激发学习兴趣。补充说明，将错误视为学习机会而非失败。课堂观察发现，学习固定搭配能有效加快阅读速度。找到适合自己的节奏和方法是成功的关键。 5.each VS every each 强调 “个别”， 可单独使用也可以 跟of 短语结构，作主语、宾语和同位语； every 修饰单数名词，强调整体，只当定语。 每个学生都有一本词典。 Each student has a dictionary. 每个人都应该为教育做贡献。 Each of us should make a contribution to education. 这儿的每个男孩都喜欢踢足球。 Every boy here likes football. There are many trees on ______ side of the lake. _______ side of the road. each every Summary We learn: 1. Some words: sand, although 2. Some phrases: change into, human being 3. Some sentences: (1) As a result, a lot of rich land has changed into desert. (2) Trees can stop the wind from blowing the earth away. We can: 1. Use the indefinite pronoun and adverb. 2. Talk about the sandstorm and its harm. null 61308.188 EVCapture4.2.2软件录制 Lavf57.25.100 本视频由湖南一唯信息科技开发的EV录屏软件录制，www.ieway.cn 57233.297 $