Unit 1 Nature in the balance Welcome to the unit & Reading 课件 -2024-2025学年高一下学期英语译林版必修第三册

该高中英语课件以“自然平衡”为主题，聚焦亚马逊雨林的生态价值、威胁及保护。通过视频观看、歌曲分析（找押韵词、讨论主旨）及恩格斯名言导入，以Pre-reading预测、While-reading段落匹配与思维导图等为支架，构建“导入-理解-应用”的学习脉络。 其亮点在于融合多模态资源（视频、音频、思维导图）与互动活动，通过歌曲探究、食物链填空、小组合作写倡议书等，培养语言能力（如写作表达）、思维品质（问题分析）和文化意识（人类命运共同体）。学生在实践中提升环保责任感，教师可借助结构化设计高效开展主题式教学。

Unit 1 Nature in the balance Welcome to the unit & Reading(I) Let us know, however, flatter ourselves overmuch on account of our human victories over nature. For each such victory nature takes its revenge on us. —— Friedrich Engels 但是我们不要过分陶醉于我们人类对自然界的胜利。对于每一次这样的胜利，自然界都对我们进行报复。 ——弗里德里希·恩格斯 Watch the video about human and nature. Work in pairs. Share how you feel about the world we’re living in. The human race has done much harm. We have polluted our soils and seas, And cut down too many trees. Now is the time to sound the alarm. We want to live in a world that’s clean; We want to live in a world of green. The human race has done much harm; Now is the time to sound the alarm. What are the rhyming words in this song? Let’s be thankful for the skies above; Let’s plant new trees and stop pollution; Let’s work together to find the solution; The Earth’s our home to protect and love. We want to live in a world that’s clean; We want to live in a world of green. Let’s be thankful for the skies above; The Earth’s our home to protect and love. Discuss the following questions in pairs. 1. What is the message of the song? 2. What can you do to help protect the environment? Humans have done much harm to the Earth, and we have to take action to change this situation. We can use less paper and fewer plastic bottles and bags. Cutting down on electricity usage can also help reduce the air pollution that power stations create. Pre-reading The Amazon rainforest: a natural treasure What do you think this script is about? While-reading Match the main idea of each paragraph. Para 1 Para2 Para3 Para4 Para5 Basic information about the rainforest The rainforest’s value to the human race; threats to the rainforest Introduction to the Amazon rainforest Plant biodiversity：levels of the rainforest（plants） Animal biodiversity：food chain （birds and animals） What’s the function of Paragraph 1? A. To emphasize the importance of the Amazon rainforest. B. To explain why the Amazon rainforest is a natural treasure. C. To state the status of the Amazon rainforest: the largest rainforest. D. To lead into the following paragraphs. Introduction As the largest rainforest in the world, it plays a significant role in maintaining the fine balance of the Earth’s ecosystem. Para.1 Read and answer the question. 6,400 6 million 8 Para.2 Listen and fill in the blanks with figures. Para.3 Read and complete the mind map. The forest’s different levels Para.4 Read and finish the food chain. at least 87 species, including frogs leaves and fruit microorganisms feed on break down feed on feed on get nutrients insects the forest’s food chain ① ② ③ ⑤ ④ jaguars Para. 5 Read and fill in gaps. Significance The Amazon rainforest__________ ________the planet by fixing carbon and producing over 20 per cent of all the Earth’s oxygen. Moreover, the Amazon rainforest is a _______________________ that can be used for food or medicine. Danger Over the past 50 years, about 17 per cent of the rainforest has disappeared due to _________________ such as agriculture and cattle farming. Amazon rainforest breathes life into treasure house of species human activities 请写一封倡议书，呼吁大家关注亚马孙雨林的现状并予以保护。内容包括如下要点: 1.亚马孙雨林的现状和重要性； 2.提出建议。 Dear friends, I am writing to call on everyone to pay attention to the protection of the rainforest._________________________________________ ______________________________________________________ Let’s take action to protect the rainforest now. Thank you! Students’ Union group work Work in a group of four: One student for present situation One student for importance One student for measures One student for presentation Grade and goal 要点 词汇 格式 逻辑 要点 格式 句型 词汇 逻辑 要点 格式 创新 句型 词汇 15 13-15 9-12 6-9 3-6 0-3 Primary Middle Advanced Assignment 1. Compulsory: Polish your writing (by self-review and peer review). 2. Optional: Are there any places in China with rich biodiversity like the Amazon rainforest? What are they? Introduce one to the class. Thank you! Lavf58.29.100 null 2021 166277.8 null 53915.918 $