高中英语 Unit22 Lesson 1教学课件 北师大版选修8 课件VIP免费

英语： Unit22 Lesson 1教学课件（北师大版选修 8 ）Lesson 1 Global Warming高二北师大版模块八Unit 22 Environmental ProtectionObjectives■ 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 about how to help reduce greenhouse gases.Part IWarm-upBrief News:Copenhagen, September 12, 2009World 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 leaders 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 carbon fuels such as coal, oil and petrol; they call this the “greenhouse effect”.The Greenhouse EffectRaising the Earth’s 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 change countries’ climates and cause huge food and water shortages. There have been several summits of governments to discuss this problem but many countries don’t want to make changes to their factories and industrial works as this would cost them money.Which countries do you think contribute more to global warming?a) developed countriesb) developing countriesDeveloped countries – more industry and technology.Part IIReadingCan we take the heat?Can we t...