1、（范围：北师大版 选修 8） 周 年 月 日Unit22 Environmental ProtectionLesson 1 Global WarmingReading ComprehensionStep 1:Learning Aims:(学习目标)1. To learn about global warming by reading the text.2. To improve your reading skillsfast reading and careful reading.Important and Difficult Points:(重难点) To master the main i
2、deas of the text.一、知识回顾：上节课学过的单词。consensus, bounce, agriculture, coincidence, condemn, reservation, sacrifice, advocate, relevant, substitute, reservation, advocate, hurricane, recycle, sacrifice, federal二、检查预习： Read the text at Page 6.三、导入：略四、自主学习、合作探究 1）Read the text fast and answer the following
3、questions.1.What does global warming refer to? 2.What human activities are causing global warming? 3.Are greenhouse gases necessary for life on Earth? Why?2) Read the text and decide which of the following are true (T) or false (F). ()1.Environmental problems are becoming less and less serious all o
4、ver the world.()2.The whole ecological balance of the earth becomes changeable.()3.The polluted air, water and soil do great harm to peoples health.()4.The measures which the government has taken are not enough.3) Fast reading:Scan the text below for these words and work out their meanings. 1.consen
5、sus A.a remarkable concurrence of events by chance 2.bounce B.move quickly up, back, or away from a surface after hitting 3.agriculture C.a general agreement 4 coincidence D.the science or practice of farming 5.condemn E.the action of reserving something 6.reservation F.to recommend or support publi
6、cly 7.sacrificeG.to give up (something important) because of other considerations 8.advocate H.sentence to a particular punishment, especially death4) Careful reading: Read the text carefully and choose the best answers. 1.The main purpose of the first paragraph is . A.to mention the process of glob
7、al warming in history B.to remind the readers of human activities in the past C.to introduce the greatest trouble in the future D.to introduce the topic of global warming to the readers 2.Global warming can . A.lead to climate change B.change the temperature of the sun C.reduce the temperature of th
8、e earth D.stop disasters 3.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.Proper greenhouse gases are quite necessary to the earth. D.Greenhouse gases do more good than harm to humans. 4.Which of
9、the following is NOT mentioned as the result of global warming? A.Heat waves. B.Serious diseases. C.Polar ice melting. D.Typhoons. 5.To reduce global warming, experts suggest we should . A.do nothing B.make small changes C.not use cars D.not have a bath 五、展示、点评：要求：大声，规范，清晰，迅速（黑板展示需在23分钟内书写完）六、 当堂检测：
10、 1. Read the text again and complete the chart below. Global Warming Definition Global warming refers to an average increase in the Earths temperature that 1. climate change 2. gases Without these gases, 3. would bounce back into space, leaving the earth cold and impossible to live on 4. The 5. in i
11、ndustry, agriculture and transport The burning of fuels The cutting down of 6. Possible outcomes Disasters such as flooding, heat waves and 7._Serious diseases The influence on industries 8._to nature Solutions Take public transport 9._ Use low-flow shower heads Buy light bulbs that 10._energy Use r
12、ecycled paper Switch off the lights when you leave a room 2. What can you do to help save wild animal? Finish the blanks.1)Support zoos, reserves, and organizations that help animals. Donate your _and do some voluntary work.2) Avoid buying any product made from endangered_animals.3)Learn all about e
13、ndangered animals and_ this information with everyone.4)Provide_ and water for animals, especially in winter. If you start this, you should carry it out all winter.5)Find out your local conservation groups that work to _animals. Ask how you can help them.七、小结作业：小结：Voice your opinion:What will you do every day to help reduce greenhouse gases?