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1、Lesson 1 Global Warming,高二北师大版模块八,Unit 22 Environmental Protection,Objectives To practise using reporting verbs, e.g. warn, tell, ask, promise. To practise using vocabulary related to global warming. To learn about the causes of global warming and raise our awareness of protecting our globe. To talk
2、 about how to help reduce greenhouse gases.,Brief News: Copenhagen, September 12, 2009,World leaders including U.S. President Barack Obama, Chinese Premier Wen Jiabao, address the general assembly(委员大会) of the United Nations Climate Change Conference 2009 in Copenhagen December 16-18, 2009. World le
3、aders worked through the early hours to try and beat a Friday deadline for a deal on cutting emissions and helping poor countries cope with (对付) the costly impact of global warming.,Most environmentalists agree that global warming is an unnatural phenomenon caused by the emissions from burning carbo
4、n fuels such as coal, oil and petrol; they call this the “greenhouse effect”.,The Greenhouse Effect,Raising the Earths temperature will cause substantial melting of the polar ice caps which will then lead to a rise in the sea level and subsequent flooding of low-lying areas.,Global warming will also
5、 change countries climates and cause huge food and water shortages.,There have been several summits of governments to discuss this problem but many countries dont want to make changes to their factories and industrial works as this would cost them money.,Which countries do you think contribute more
6、to global warming?,a) developed countries b) developing countries,Developed countries more industry and technology.,Can we take the heat?,1. Scan the text below for these words and work out their meanings.,consensus bounce agriculture coincidence,a remarkable concurrence of events by chance move qui
7、ckly up, back, or away from a surface after hitting a general agreement the science or practice of farming,condemn reservation sacrifice advocate,the action of reserving something to recommend or support publicly to give up (something important or valued) because of other considerations sentence to
8、a particular punishment, especially death,1) The main purpose of the first paragraph is _. A. to introduce the topic of global warming to the readers B. to remind the readers of human activities in the past C. to introduce the greatest trouble in the future D. to mention the process of global warmin
9、g in history,3. Choose the best answer to each question according to the text.,Answer: A,2) Which of the following is TRUE about greenhouse gases? A. Greenhouse gases will only do us harm. B. Greenhouse gases do more harm than good to humans. C. Greenhouse gases do more good than harm to humans. D.
10、Proper greenhouse gases are quite necessary to the earth.,Answer: D,3) Which of the following is NOT mentioned as the result of global warming? A. Typhoons. B. Serious diseases. C. Polar ice melting. D. Heat waves.,Answer: A,3. Read the text quickly and answer the questions.,1) What is global warmin
11、g? 2) What human activities are causing global warming?,Global warming is an average increase in the Earths temperature that leads to climate change.,Industry, agriculture, the cutting down of forests, the increase in transport and the burning of fuels are causing global warming.,3) By how much has
12、the global average temperature increased in the last 10 years? 4)Are greenhouse gases necessary for life on Earth?,By 1F ( one degree Fahrenheit).,Yes, they are, because they trap heat from the sun in the Earths atmosphere. Otherwise the Earth would be cold and unsuitable for life.,5) How can we hel
13、p solve the problem of global warming?,We can make small changes like taking public transport, recycling, using low-flow shower heads, and buying energy-efficient light bulbs to help stop global warming.,1. In the last few decades, scientists have reached consensus and reported that human beings are
14、 causing changes in the Earths climate something previously seen as beyond our control.,译文：最近几十年来，科学家已经达成一致意见，认为人类活动引起了地球的气候变化，而地球的气候变化在以前看来是我们人类所不能控制的。,结构分析： 本句中的并列连词and连接两个并列的谓语。第二个谓语动词reported后接一个宾语从句that human beings are causing changes in the Earths climate。而破折号后面的内容则是前面changes的一个同位语，对changes作补
15、充说明。,2. Looking ahead, scientists believe that global warming could be one of the biggest environmental problems facing the 21st century.,译文： 展望未来，科学家们认为，气候变暖可能是二十一世纪人类面临的最严重的环境问题之一。,结构分析： looking ahead是一个现在分词短语在句中作状语，表示句子的主语scientists发出的动作。动词believe的后面则是一个宾语从句。宾语从句中的现在分词短语facing the 21st century在句中
16、作定语，修饰前面的名词environmental problems。,3. Without these naturally occurring gases, the suns rays would bounce back into space leaving the Earth cold and impossible to live on.,译文： 如果没有这些自然产生的气体，太阳的光线将会被反射回太空中去，地球将处于寒冷之中，而不适合生命的存在。,结构分析： 这是一个含有现在分词的简单句，without these naturally occurring gases是介词短语作状语；the suns rays would bounce back into space是句子的主体；leaving the Earth cold and impossible to live on是现在分词短语作结果状语。,4. Given this data, it seems that the link betw
