Unit 7 Welcome to the unit 课件 2025-2026学年译林版英语八年级上册

该初中英语课件围绕自然世界的生态系统及保护的重要性，通过“你喜欢去森林、草原等自然景点吗？”等问题导入，结合雨林、珊瑚礁等生态系统事实阅读、对话模仿和角色扮演，搭建从已知到未知的学习支架，帮助学生逐步掌握核心词汇与表达。 其亮点在于融合语言能力与思维品质培养，通过小组讨论“最神奇的自然事物”、分析草原根系抓土防流失等实例，提升学生语言表达与逻辑思维。采用任务型教学，拓展任务“观察社区动植物”促进主动学习，学生能增强环保意识，教师可借助结构化活动提升教学效果。

初中英语译林版八上 The natural world Welcome to the unit Unit 7 通过本课时的学习,学生能够: Learning objectives 通过阅读和讨论,了解雨林、珊瑚礁、草原、极地冰原等生态系统的趣味事实,掌握相关英语表达。 01 通过对话练习和角色扮演,提升关于生态系统话题的英语听说技能,能模仿示例进行双人对话并拓展交流。 02 通过拓展思考,增强对自然生态系统多样性的认知,激发探索和保护生态系统的意愿。 03 难点 重点 重点 Free talk Do you like going to nature spots, such as forests, grasslands or beaches? Why or why not? What do you think is the most amazing thing about the natural world? Unit overview To treat the earth kindly is to treat oneself kindly. read about different ecosystems; In this unit, we will learn about protecting ecosystems; give suggestions on how to protect ecosystems; better understand the importance of protecting ecosystems. 1 2 3 4 Let’s learn The natural world is wonderful. Let's learn about different ecosystems and see what we can do to help protect them. Read and tick Kitty is learning about ecosystems. Read the facts below with her and tick the ones you already know. Rainforests are home to over half of all the types of animals and plants on earth. Coral reefs look like rocks, but they support a lot of life in just a small area. ①支持;拥护 ②帮助;援助 ③资助;扶养 1 2 √ Read and tick Read the facts below with her and tick the ones you already know. Grasslands often lie between deserts and forests. The ice is home to animals like polar bears and penguins. 3 4 √ Think and answer Do you know whether corals are animals or plants? Corals are animals. Although corals look like plants and even can carry out photosynthesis with the help of algae living in them, they are actually made up of tiny creatures called coral polyps(珊瑚虫). Coral polyps have the characteristics of animals, such as feeding on small plankton (浮游生物). Kitty and David are talking about ecosystems. Work in pairs and discuss the topic. Use the conversation below as a model. Kitty: David: Kitty: David: Kitty: David: Do you know anything about ecosystems, David? I know that grasslands in different places are home to different animals. In Inner Mongolia, there are horses and cows, but in Africa, there are lions and giraffes. Oh, really? Do you know anything about deserts? Well, it's very dry in deserts because there's little rain. And the difference in temperature between day and night is huge. Yes, the climate in deserts is so awful that only a few animals and plants can live there. It's true. The desert plants keep water in their leaves, and many animals there get water from these plants. Discuss in pairs Role-play the dialogue, and imitate the pronunciation and intonation Role-play Kitty: David: Kitty: David: Kitty: David: Do you know anything about ecosystems, David? I know that grasslands in different places are home to different animals. In Inner Mongolia, there are horses and cows, but in Africa, there are lions and giraffes. Oh, really? Do you know anything about deserts? Well, it's very dry in deserts because there's little rain. And the difference in temperature between day and night is huge. Yes, the climate in deserts is so awful that only a few animals and plants can live there. It's true. The desert plants keep water in their leaves, and many animals there get water from these plants. Show time! Fluently 朗读流利 Correctly 语言准确 Act vividly 表演生动 Think and share The Amazon rainforest produces about 20% of the world's oxygen.(亚马逊雨林产生了全球约 20% 的氧气。) Some desert frogs can bury themselves in the sand and sleep for years when there is no rain.(一些沙漠青蛙在无雨时能把自己埋在沙子里睡上几年。) What other fun facts about ecosystems do you know? Think and share Grasslands can prevent soil erosion because their roots hold the soil tightly.(草原能防止水土流失,因为其根系紧紧抓住土壤。) What other fun facts about ecosystems do you know? Language points climate 作名词,意为“气候”,用于描述一个地区长期的天气模式、温度或降雨等天气情况。也可以指某种氛围或社会大环境。 mild climate 温和气候 mainland climate 大陆性气候 tropical climate 热带气候 climate change 气候变化 1. climate /'kla m t/ n. 气候 1. Because of the bad _, a lot of animals can’t find enough food. 2. 它们也能为我们提供气候变化的信息。 They can also provide us with information about _ _. Let’s practice climate climate change Language points look like 意为“看起来像”,有以下几种用法: (1) 描述外貌,指某人或某物和其他人或物具有很大的相似性。 询问某人的外貌长什么样使用句型“What do/does + 主语 + look like? ”意为“……长什么样?” (2) 描述天气或环境,意为看起来有某种可能。 (3) 表达某种可能性,指意外情况可能发生。 2. look like 看起来像 1. His mother is tall with long hair. (对画线部分提问) _ 2. 那些云朵看起来像棉花糖。 The clouds _ _ some cotton candy. Let’s practice What does his mother look like? look like Language points be home to 意为“是……的栖息地/所在地”,通常用于描述某地是某一特定事物的起源或聚集地,可以指地理领域、生态领域或文化领域。home 前面不使用冠词。 3. be home to 是……的栖息地/所在地 1. Coral reefs are home to many kinds of creatures. (选出画线短语的含义)_ A. 栖息地 B. 宿舍 C. 旅馆 D. 中心 2. 四川省是大熊猫的故乡。 Sichuan Province _ _ _ giant pandas. Let’s practice A is home to between among Language points 4. 辨析: between 与 among 主要用于表示在两个人或事物之间,强调两者之间的明确关系。 用于三者或三者以上的人或事物之间,通常强调一个群体或整体中的关系。 Language points 4. 辨析: between 与 among 一语辨异 Among all the students in his class, he sits between Lucy and Linda. 在他班级的所有学生中,他坐在露西和琳达之间。 1. I think the Spring Festival is the most important _ all the festivals in China. 2. 在语文和英语之间你更喜欢哪一个? Which do you like better _ Chinese _ English? Let’s practice among between and Language points 5. ...the climate in deserts is so awful that only a few animals and plants can live there. ……沙漠里的气候如此恶劣,以致于只有少数动植物能够在那里生存。 分析结构 这是一个复合句,主句中 the climate 是主语,is 是系动词,awful 是形容词作表语,in deserts 是介词短语,修饰名词 the climate。that 后引导的是结果状语从句。 so...that... 用于表达因果关系,强调结果或影响。描述一个事件或情况如此强烈,以至于导致另一个事件或情况发生。so...that... 中的 so 是副词,用于修饰形容词或副词,句型结构是:主语 + 谓语 + so + adj./adv. + that 从句。 Language points so...that... so that Language points 辨析: so...that... 与 so that 意为“如此……以致于……”,引导结果状语从句,so 后面接形容词或副词,that 后面接从句,so 和 that 要分开。 意为“以便于;为了”,通常引导目的状语从句,从句中通常有情态动词 can, could, may, might 等。主句在前,从句在后,且主句和从句之间没有逗号隔开。 1. I was _ sleepy _ I could hardly keep my eyes open. ( ) A. not only; but also B. either; or C. both; and D. so; that 2. —I think I am the shyest in my class. What should I do? —Be more active in class _ you can improve your ability to express yourself. ( ) A. so that B. unless C. or D. although Let’s practice D A Summary Ecosystems in the natural world and the importance of protecting them Topic ecosystem, climate, rainforest, coral reef, grassland, desert, polar ice, support Key words 1. ... be home to ... 2. ... look like ... 3. ... so + adj./adv. + that ... Key phrases Homework 1. Base: Recite the dialogue in Activity B and record your recitation to submit on the class platform. 2. Practice: Finish the exercises related to this lesson in the English workbook. 3. Expand: Observe and record as many plants and animals as possible around your community or school. Bye Bye null 55587.668 $