大学体验英语Unit课件.ppt

Unit One Caring for Our Earth Why should we care for our earth? Why should we call the earth we live on our Mother Earth? We are nurtured by the healthy condition of Mother Earth. In humans, if the mother is ailing, the child suffers. We are the cause of the ailing planet and we are the victims. Problem and solving What’re the problems? What are the causes? What causes acid rain（酸雨）? Acid rain is caused by the burning of fossil fuels. Such as burning oil, gas and coal in power stations and in motor vehicles. What are the causes? What causes air pollution? Air pollution takes many different forms and arises from a variety of sources. Burning of fossil fuels (coal, gasoline, etc..) is the single largest source of air pollutants. What are the causes? What causes global warming and what should we do? Listen and talk. (P8) Dialogue samples (P10) What are the causes and effects? Causes Effects 1. rise of the sea level 2. change of the global weather system Rise of the sea level bath smoking 阅读理解：主题和展开 Topic sentence（TS）: 包含有idea和key words Developing sentences（DS）: 展开主题句中的一个key word或idea，补充说明“是什么？怎么样？为什么？”等等细节内容。一般会以某种方式重复key word的意义，有时会间隔一两个句子才出现重复。 我看见过波澜壮阔的大海，玩赏过水平如镜的西湖，却从没看见过漓江这样的水。漓江的水真静啊，静得让你感觉不到它在流动；漓江的水真清啊，清得可以看见江底的沙石；漓江的水真绿啊，绿得仿佛那是一块无瑕的翡翠。船桨激起的微波扩散出一道道水纹，才让你感觉到船在前进，岸在后移。 中国的农民曾经过着很艰苦的生活，并一直受着饥饿的困扰。几十年来，他们努力寻找能够提高粮食产量的方法，但收效甚微。现在，情况有了改变。多亏了袁博士的杂交水稻研究，农民们种出的粮食比以前多了一倍。这意味着世界22%的人口摆脱了饥饿。大多数农民都很满意现在的生活，宁愿呆在农村当农民。 阅读理解：猜测词义 Most of us see everything as independent from one another. But the reality is that everything is part of one interconnected, interrelated whole. These problems are worsening, not getting better. It was the spring of hope; and it was the winter of despair. The biggest threat to our environment today is the way we, as human beings, see our environment. How we see our environment shapes our whole world. Most of us see everything as independent from one another. But the reality is that everything is part of one interconnected,