Unit4GlobalwarmingReading课件2人教版选修6.ppt

高二英语选修6 Unit4 Global Warming ReadingTHE EARTH IS BECOMING WARMER-BUT DOES IT MATTER?;1.Compared to the past few years, what’s the weather like this year ? 2.Do you want to check it out? Here are some pictures based on the actual life scenes in these years for you to refer to.;;In addition ,you may turn to Graph 1. on Page 26 to find out the changes of the temperatures from long-term average.;Unit4 Global Warming Reading The Earth Is Becoming Warmer – But Does It Matter?; ;Sophie Armstrong wrote the magazine article. The name of the magazine is “Earth care”.;3.What do they think about global warming? Do they agree with one another?;4.What are the two graphs about?; ; 1.The temperature last century didn’t increase much. ( ) 2.Everyone believes that global warming is caused by the activities of humans. ( ) 3.Janice Foster believes that global warming is caused by burning fossil fuels. ( ) 4.Natural gas is a greenhouse gas. ( ) 5.Carbon dioxide is a byproduct of burning fossil fuels. ( );6.People accept Charles Keeling’ s data because he took accurate measurements. ( ) 7.Flooding could be one of the effects of future global warming. ( ) 8.George Hambley believes scientists are just guessing about the effects of global warming. ( ) 9.George Hambley is worried about the effects of carbon dioxide on plant growth. ( ) 10.It is clear what the effects of global warming will be. ( ) ; ;The main idea of the passage: Part 1(Paragraphs 1) Part 2(Paragraphs 2-4) Part 3(Paragraphs5-10) ;Part 4(Pa 11);Questions;; ② Greenhouse effect greenhouse gases we need those gases. ;③ We add huge quantities of extra carbon dioxide to the atmosphere by burning Fossil fuels. The carbon dioxide content of the atmosphere went up from around 315 parts per million to around 370 parts per million from 1957 to 1997 (See Graph 2 on Page 26 ) ;The two different viewpoints towa