Unit 1 Lesson 1课件- 2025-2026学年冀教版（2024）初中英语八年级下册

Spring is coming! Lesson 1: Planting trees Unit 1 1 Learning aims 能运用所学词汇、句型，围绕“植树”进行对话交流，分享植树的益处； 能听懂关于春天植树的对话，捕捉春天的天气描述、植树的步骤及原因等信息； 能应用本课所学知识，探讨植物生长及其他季节天气的描述。 2 duty /ˈdjuːti/ n. 执勤；责任；义务 reach /riːtʃ/ v. 达到；到达；实现 hole /həʊl/ n. 坑；洞；孔 seedling /ˈsiːdlɪŋ/ n. 树苗；秧苗；幼苗 root /ruːt/ n. 根；根源 New Word press /pres/ v. 压，按；催促 n. 报刊；出版社；印刷 excellent /ˈeksələnt/ adj. 太好了；杰出的 prevent /prɪˈvent/ v. 防止；阻止 dust /dʌst/ n. 沙土；尘土；灰尘 spread /spred/ v. 扩散；传播；展开 Lead-in What season is it? It is spring. rainy windy sunny freshcoldhotsnowyfogg Discuss and answer. What’s the weather like in spring? How is the weather? 天气怎么样？ warm windy fresh rainy pleasant 宜人的 Lead-in Lead-in Discuss and show. What will you do in spring? fly a kite climb mountains plant trees have a picnic have a spring outing 踏青 What’s the school project on March 12? Lead-in Listen to the song. Put the pictures in order. Activity 1 Pre-listening Guess and answer 1 What are they doing? They are planting tree. In China, Tree Planting Day is a national holiday on March 12th, established in 1979 . Listen to the conversation and tick the items mentioned. 2 Activity 2 While-listening Ms Liu: Good morning, everyone! Who is on weather duty today? Wang Mei: It’s me! Today is Monday, March 1. The temperature will reach 15℃ by noon and drop to 2℃ at night. Overall, it will be a warm, cloudy day. Ms Liu: Well done, Wang Mei. The days are getting longer, and spring is coming. We have a school project on March 12. Can you guess what it is? Li Ming: Is it tree planting? Ms Liu: Good guess. Do you know how to plant trees? Li Ming: Yes. I learned to plant trees when I visited my uncle last spring. It was so much fun. Ms Liu: Could you tell us the steps for planting trees? Li Ming: Sure. First, dig a large hole. Then, place the seedling inside the hole, and cover its roots with soil. Finally, press down on the soil. Oh, don’t forget to water the tree. Ms Liu: Excellent, Li Ming. Why do people plant trees? Do you have any ideas? Song Hua: Trees help protect the soil from rainfall. Li Lin: Trees prevent dust from spreading. Ms Liu: Good points. I believe you will have a great time with this project. Tick what they are talking about. steps to plant trees. □ a way to learn about nature □ different kinds of trees □ □ □ □ weather school project reasons for planting trees How to plant trees? a large hole. the seeding inside the hole. its roots with soil. down the soil. Don’t forgrt to the tree. Dig Place Cover Press water How many steps? Five steps. Listen to the conversation again and answer the questions. 3 A What’s the weather like today? It’s a warm, cloudy day. B Why does Li Ming think the project is about planting trees? Because March 12th is Arbor Day. C Why do people plant trees? Because trees help protect the soil from rainfall and prevent dust from spreading. Planting trees is also a wonderful way to learn more about nature. Listen to the introduction to the Great Green Wall and fill in the blanks. 4 The Great Green Wall was built across the northern part of China. What is the Great Green Wall? It is made up of strips of _______ planted by humans. Each year, dust storms blow away a large amount of soil.The situation is becoming increasingly serious. The Gobi Desert is swallowing about_______ square kilometres of grassland every year. The Great Green Wall project started in _______. By planting more trees, people are preventing the _______ from expanding and the forest coverage in northern China is increasing. By the year _______, the Great Green Wall will be over 4 million aquare kilometres. forests 3600 desert 2050 1978 Work in pairs. What are the basic steps for planting a tree? What are the benefits of planting trees? Talk about all these with your partner. 5 Language point 1 1.Who is on weather duty today? duty n. 责任；职务；职责；上班；税 复数 duty—duties on duty 在值班；在值日 e.g. It’s one’s duty to do sth. 做某事是某人的职责 Language point 2 2.The temperature will reach 15°C by noon and drop to 2°C at night. reach v. 到达；抵达；伸手去够 / 拿 用法：reach Shijiazhuang 到达石家庄 reach 作动词时的一词多义： (1) 达到(某阶段、数量或速度等) (2) 到达 (3) 实现；达成 (4) (伸手/ 脚等) 够到；伸出(手、脚等) 常见用法：(1) reach an agreement 达成协议 (2) reach one’s goal 实现某人的目标 (3) reach for 伸手去拿 (4) reach out 伸手 reach 还可作名词，意为“影响范围”。beyond one’s reach 超出某人的能力范围 辨析：reach, arrive 与get to 相同点 不同点 reach 均可表示“到达” 及物动词，直接接宾语(地点) ，不接介词。 arrive 不及物动词，接宾语时必须加介词：接大地点(国家、城市等) 用arrive in；接小地点(车站、学校等) 用arrive at。 get to 及物动词短语，若后面的地点是副词(如here/there/home) ，则不加to。 by noon 意为“到中午之前”。“by + 时间”是一个常用的英语短语，表示“在……之前”或“到……为止”，强调某个动作或事件在某个时间点之前完成。这个短语通常用于表示截止时间或最后期限。 相关短语：by the end of 到……末为止 at noon 在中午 · I will finish my report by noon. 我将在中午之前完成我的报告。 · By the end of this month, I will finish reading five books. 到这个月底，我将读完五本书。 · I like to take a short break at noon to relax. 我喜欢在中午休息一会儿来放松。 Language point 3 3.Finally, press down on the soil.   press v.压；按 n.报刊，出版社，压力 用法： press down 向下压；按压 press sb. for sth. 向某人迫切索要某物 the freedom of the press新闻自由 eg. Press down the button to start the machine. 按下按钮启动机器。 4.Trees help protect the soil from rainfall. protect... from 保护……以免(受……的伤害/影响) ，强调通过某种方式使对象避免遭受不利因素(如危险、伤害、损害等) 。 近义表达：(1) protect...against... 保护……免受……，强调“对抗、抵御”有攻击性的对象(如敌人、疾病、自然灾害等) 。 (2) save... from... 拯救……免于……；使……避免…… Language point 4 · We wear sunglasses to protect our eyes from the strong sunlight. 我们戴太阳镜是为了保护眼睛免受强烈阳光的伤害。 · Vaccines can protect us against serious diseases. 疫苗能保护我们抵御严重的疾病。 · The doctor saved him from death. 医生把他从死亡边缘救了回来。 Language point 5 5.Trees prevent dust from spreading.   spread v.扩散；传播, 可指疾病、消息、谣言、火势等的传播或蔓延 用法： spread out 展开；散开 spread...on... 把…… 涂抹在 spread the word 传播消息；广而告之 prevent/stop...from spreading 阻止…… 传播 / 蔓延 同义短语为stop/keep... from doing sth eg.We should take measures to prevent the virus from spreading. 我们应该采取措施阻止病毒蔓延。 I learned to plant trees when I visited my uncle last spring. 去年春天我去拜访叔叔的时候学会了种树。 分析结构：这是一个主从复合句。主句是I learned to plant trees，后面是when 引导的时间状语从句；主句中主语是I，谓语是learned，to plant trees 是动词不定式短语作宾语。 探究三 核心句式 · When I am tired, I like to listen to music. 当我觉得累的时候，我喜欢听音乐。 · Call me when you’re finished. 你完成后就打电话给我。 · Now I am learning English while my mum is reading newspapers. 现在我在学英语，我的妈妈在读报纸。 when 和while 都引导时间状语从句。 (1) when 后接“时间点”或“时间段”，用于表示某个动作或事件发生的时间。从句的动作可以和主句的动作同时发生，也可以在主句的动作之前或之后发生。 (2) while 后接“时间段”，主句的动作与从句的动作同时发生，但持续时间一般较长或主句的动作发生在从句的动作进行的过程中。 Summary Planting trees! Important sentences The steps for planting trees. The reasons of planting trees. phrases by noon protect... from press down prevent... from doing New words duty root spread reach press excellent hole prevent seeding dust good point Exercise 用括号内单词的正确形式填空。 1.The news of the sports meeting has ______ (spread) all over the school in an hour. 2.My mother ______ (press) the clothes for me before I went to school this morning. 3.It’s everyone’s duty (protect) the environment around us. 4.The temperature usually ______ (reach) 35℃ in July in our city. 5.We must do something to prevent the wind from (blow) the sand into the city. spread pressed to protect reaches blowing Homework 1. Read the dialogue fluently. 2. Write a passage about planting trees. 31 null Other 59714.8 null Other 88686.555 null Other 89104.555 null Other 57938.566 $