[中学联盟]陕西省榆林育才中学高中英语（选修6）导学案：Unit 4（7份）

学习目标：1、理解课文内容，了解气候变暖的原因和结果等。 2、结合上下文语境，感知、体验、重点句子。 3、让学生对 全球气候变暖有更多的了解。 学法指导：1、自主学习课文，完成预习案中的练习。 2以课文为载体在阅读中充分利用各种阅读技巧以提高自己的阅读能力。 预习案 1、 话题阅读 Short and long term effects of Global Warming全球变暖的短期及长期影响 Climate change: Effects of global warming are causing the temperature of the earth to slowly rise, causing massive(大量的；大规模的）global changes to our natural environment. Rising see level(海平面） Effects of global warming are rapidly melting(融化）glaciers(冰川） around the globe, causing a rising sea level and possibly coastal flooding(洪水）and other weather problems in the future. Ecosystem(生态系统）changes Effects of global warming are changing certain ecosystems throughout due to temperature changes.Animals and plants are being forced to adapt to(适应）this, and as a result are dying off Breakdown of the ozone layer(臭氧层） Effects of global warming are creating holes in the ozone layer, primarily(首要地、起初地）from human use of products that emit(发出、放射） poisonous chemicals. The ozone layer absorbs UV radiation(紫外线）from the sun. The holes are causing amounts poisonous chemical present in our breathing air to increase at a rapid rate. Questions: What are the effects of global warming?______________________________________________ 探究案 一、Read the text and then match the main idea of each paragraph. Part 1 (para.1) A.To list two different attitudes among scientists towards global warming Part 2(para.2-5) B.To introduce a debate (辩论）over the issue of global warming Part3 (para.6) C.To explain how global warming comes about Part 4 (para.7) D.It`s up to readers to think and decide whether people should do something about global warming 写作方式： Part 1 (para.1) Giving examples, using graphs, explanation. Part 2(para.2-5) Raising a question Part3 (para.6) Using a question, leaving readers to think over the issue Part 4 (para.7) Giving examples, making contrast. 二．