Unit 2 Topic 2 Section A 公开课课件-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“沙尘暴及其防治”主题，涵盖沙尘暴相关词汇（sandstorm, desert）、短语（change into, stop...from...）及不定代词/副词用法。通过视频导入沙尘暴现象，以图片排序、小组讨论为支架，衔接Pre-listening短语学习、While-listening听力理解至Post-listening对话表演与成因描述，构建“现象感知-逻辑分析-语言表达”的学习脉络。 其特色在于深度融合核心素养，语言能力方面，通过听力选择、对话角色扮演、一般过去时描述成因步骤，提升听说读写综合运用；文化意识上，结合“三北防护林”案例与环保行动讨论，增强家国情怀与社会责任感。树的功能总结表、不定代词专项练习及分层作业（必做 workbook/选做英语视频），助力教师高效实施教学，学生在实践中提升语言技能与环保素养。

Feedback: write words air pollution light pollution litter water pollution soil pollution noise pollution All these problems are very serious. Review:What pollution do we have learned in topic 1? Unit 2 Saving the Earth Topic2 All these problems are very serious. Section A Learning Objectives 1.掌握谈论环境问题（沙尘暴）的词汇和短语，如：sandstorm，desert，cut down，change into等。 2.能听懂、读懂并用英文描述沙尘暴的成因，以及树的功能。 3.树立环保意识，了解中国在环保方面的巨大努力（“三北防护林”）， 增强民族自豪感和社会责任感。 Lead in Which disaster (灾难）can you see in the video? Sandstorm Do you know how sandstorms come into being? 形成 many trees cut down Human beings have cut down too many trees. Pre-listening forests gone wash the earth away 冲走 Forests can stop the water from washing the earth away 转换成，变成 change into desert 沙漠 e.g. A lot of rich land has changed into desert because people have cut down too many trees. sandstorms come into being n. 沙尘暴 3 Do you know how sandstorms come into being? Number the pictures and talk about the sandstorm in groups. wash the earth away many trees change into desert forests gone sandstorms come into being cut down trees 4 1 5 3 6 2 Try to describe the causes of sandstorms? 请使用一般过去时来描述 many trees cut down trees forests gone There were many trees. Human beings cut down trees. The forests were gone. wash the earth away The rain washed the earth away. change into desert A lot of rich land changed into desert. Sandstorms came into being. sandstorms come into being 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 While-listening 1a Watch and follow. Act out the dialog in pairs K: wind; sand; anything M: sandstorms J: cut down; as a result; change into M: affect J: stop…from…; blow… away K: can be saved J: wash … away K: is harmful to; although; do something 1c Read 1a and complete trees’ functions. (1) Trees can stop the wind from blowing the earth away. 树能阻止风把土吹走 (2) A lot of water can be saved by forests. 森林能储藏大量的水 (3) Trees can also stop the water from washing the earth away. 树还可以阻止水把土冲走 Tree’s functions Find the phrases in 1a . 1. 沿着街道走 2.砍倒 3. 结果 4. 肥沃的土地 5. 变成 6. 阻止...做某事 7. 吹走 8. 冲走 9. 对...有害 10. 绿色长城 cut down as a result rich land change into stop/keep/prevent sb./sth. from doing sth. blow ... away be harmful to = do harm to The Green Great Wall wash ... away walk down the street Post-listening 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 the indefinite pronoun and adverb (不定代词和不定副词） 1.I have ____ to tell you. A. important something B. something important B 形容词修饰不定代词和不定副词时，要放在不定代词/不定副词之后 Do you know? 2.Everybody ___ ready for the match. A. is B. are A 不定代词作主语时，谓语动词要用单数。 Use someone, something, anything, somewhere, anywhere to fill in the blanks. We learn: 1.Some words: sand, although 2.Some phrases: change into, stop...from... 3.Some sentences: (1)A lot of water can be saved by forests. (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. Summary The Three-North Shelter Forest Program 三北防护林 We have built “The Green Great Wall”. Our environment has become much better. 西北 Northwest 华北 North 东北 Northeast As a sthdent,what we should do to protect our planet? Protect the environment, start from me, start from little things! 1.We should turn off the tap after using water. 2.We should take our own bags when we go shopping. 3.We shouldn’t spit anywhere in public. 4.We shouldn’t throw litter around. Homework Need to do: 1.Finish Section A in the workbook. 2.Try to spread the Trees’ Function to your friends. Choose to do:Make a video in English about how sandstorms come into being. Thanks for your listening! Lavf58.20.100 67551.43 Lavf58.20.100 $