Book 7 Unit 2 Global Warming(山东省济宁市)

课件41张PPT。Unit Two Global WarmingThe earth is our most precious resource. It gives us life; it is where we live. What will the world like in a hundred years? While scientists might disagree about the effects Of global warming, they agree that it is happening, and that it will change the face of the planet. Cheat the earth and the earth will cheat you. ——— Chinese ProverbThe beautiful earth is our home. Do you love to live here?garbagedeforestationdesertificationStarvationAir pollutiondeforestationWater pollutionThe area of desert is growing. desertificationtoo many sheep and cattleall the grass be eaten grass never grow again ; the land become deserttrees be cut downnothing to hold…soil be blown awaysoil be washed away…trees be destroyedfish be killedsmogmost serious problemsWater pollutionTrash/GarbageAir PollutionDeforestationDesertificationStarvationAfter seeing the pictures, do you still enjoy living on the earth?Read the passage and tell the main idea of the dialogue.Debates about the reasons for the globe warming. True or False or INP 1. The play is set in Beijing, where an international conference on climate change is being held.2. Scientist No. 1 is optimistic, and Scientist No. 2 is pessimistic, about globe warming.3. Scientist No. 2 believes that we have misread and misinterpreted changes in temperature.4. Smokestack Industries are from Hong Kong. 5. Carbon dioxide comes from factories.6. The play tells us that we are safe, that trees are continuing to grow, and that the earth will last millions of years.FalseFalseTrueINPTrueFalseRead and look for information:1.List three things Scientist No. 1 mentioned to support her idea that we are in danger.●Industrial activity by humans is producing much pollution.●A sort of greenhouse now surrounds the earth. The greenhouse allows the sun’s ray in, but prevent harmful gases from escaping.●The warm weather will cause big changes in forestry and agriculture2. List four things Scientist No. 2 mentioned in support of his idea that things are not any worse than they were.●Many factors are causing the earth’s temperature to rise.●Most of our temperature-measuring devices are located in cities, which have millions of people and created their own “heat islands”.●This might exaggerate temperature reading.●Even if climate warming does occur as predicted, it will not be the first time in the earth’s history.3. The main idea of what Smokestack Industries said is:●I need coal / oil( fue, energy)●4. The main idea of what Automobile said is:5. The main idea of what the Earth said is:●I need gas and oil after all.I expect to be here for a long time, and I need to be taken care of.discussion1.How does the greenhouse effect develop? 2. What role do trees play in achieving our environmental balance ?Language points:1. sb. be believed to be/do… It is believed that…It is reported that another man-made satellite has been put into orbit.believed /said /reported/considered/thought/ supposed/know ... ...