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课件网) Unit 6 The natural world Unit 7 Welcome to unit 学习目标 通过本节课的学习，同学们能够: 1.认读生态系统相关基础词汇(如 ecosystem, grassland, desert, temperature 等),运用“There be...” “It‘s...because...”等基础句型描述生态环境特点。 2.读懂 Kitty 和 David 关于草原、沙漠生态系统的对话，提取关键信息(如 不同草原的动物差异、沙漠的气候特点);模仿对话结构,运用简单句式与同 伴就其他生态系统进行简短交流（如 “Do you know about... ” “It has...because...”）。 3.了解不同地区（如 Inner Mongolia, Africa）生态系统与当地生物 的关联，初步感知自然环境与人类生活的联系，培养尊重自然、 保护生态的意识。 1 2 3 4 read about different ecosysetems; learn about protecting ecosystems; give suggestions on how to protect ecosystems; better understand the importance of protecting ecosystems. To treat the earth kindly is to treat oneself kindly. In this unit we will The natural world is wonderful. Let’s learn about different ecosystems and see what we can do help protect them. Welcome to the unit Fun facts about ecosystems Let's explore the wonderful ecosystem together Ecosystems that exist on land(陆地生态系统) Ecosystems that exist in water(水生生态系统) 1.Forest Ecosystem（森林生态系统）： 2.Grassland Ecosystem(草原生态系统)： 3.Desert Ecosystem（沙漠生态系统）： 1.Freshwater Ecosystem(淡水生态系统)： 2.Marine Ecosystem(海洋生态系统)： 1.Forest Ecosystem（森林生态系统）： Ecosystems that exist on land(陆地生态系统) A forest ecosystem is a place with many trees, plants, animals, and non-living things (like soil and water) that live and work together. 2.Grassland Ecosystem（草原生态系统）： A grassland is a big area covered mostly with grass—there are some small trees or bushes, but not many tall trees. It’s a home for many plants and animals that live together. 3.Desert Ecosystem（沙漠生态系统）： Plants save water. Animals stay cool (by hiding or being active at night). They depend on each other, for example, insects eat plants, and lizards eat insects. A desert is a very dry place with little rain. It can be hot (like the Sahara) or cold (like some deserts in Asia). But even here, plants and animals live together! Ecosystems that exist in water(水生生态系统) 1.Freshwater Ecosystem（淡水生态系统）： A freshwater ecosystem is a place with fresh water (not salty, like ocean water) where plants and animals live. It includes lakes, rivers, ponds, and even small streams! 2.Marine(/m ri n/)Ecosystem（海洋生态系统）： A marine ecosystem is the big, salty ocean and all the living things (plants and animals) that live in it. It covers most of our planet—way more than land! A A 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. Grasslands often lie between deserts and forests. The ice is home to animals ... ...
