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1、精选优质文档-倾情为你奉上 Unit 4 Global warmingReadingTeaching goalsTarget languagewords and phrases:energy, light(v.), heat(v.), renewable, non-renewable, run out, compare, phenomenon, graph, fuel, trap, data, climate, catastrophe, consequence, range, per, glance, compare to, come about, fierce debate, result
2、in, build up, keep onAbility goalsEnable the students to talk about different sources of energy.Enable the students to read the text, understand what it is about and talk about the causes and effects of global warming.Teaching important & difficult pointsEnable the students to get a better understan
3、ding of articles of this kind.Teaching aids A projector and a blackboardTeaching procedures Step 1 Warming upT：Now lets look at a picture on the slide and answer the question below.What is the greenhouse made and used for?A greenhouse is made of glass and is used for growing plants, especially durin
4、g cold weather.Whats greenhouse effect?Step 2 ScanningRead the text quickly and find the answer to the questions:1. Who wrote the magazine article? What is the name of the magazine?Sophie Armstrong, Earth Care.2. What are the names of the three scientists mentioned in the article?Dr Janice Foster, C
5、harles Keeling, George Hambley.3. What do they think about global warming? Do they agree with one another?They dont agree with each other. Dr. Janice Foster thinks the effects of global warming could be very serious.George Hambley thinks global warming will be mild with few bad environmental consequ
6、ences.Charles Keeling believes it is the burning of more and more fossil fuels that is resulting in a bigincrease in carbon dioxide.The first graph shows the temperature increase of one degree Fahrenheit between 1860to 2000. The second graph shows the carbon dioxide content in the atmosphere from 19
7、57 to 1977.4. What are the two graphs about?The first graph shows the temperature increase of one degree Fahrenheit between 1860to 2000. The second graph shows the carbon dioxide content in the atmosphere from 1957 to 1977.5. What is the main topic of the article?Global warming/ the warming of the e
8、arth.Step 3 Skimming Read the passage carefully and judge whether the statements are true or false.1. The temperature last century didnt increase much.2. Everyone believes that global warming is caused by the activities of humans.3. Janice Foster believes that global warming is caused b the burning
9、fossil fuels.4. Natural gas is a greenhouse gas.5. Carbon dioxide is a byproduct of burning fossil fuels.6. People accept Charles Keelings 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 guessi
10、ng 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.Keys: True: 3, 5, 6, 7, and 8 False: 1, 2, 4, 9, 10Step 4 Detailed readingRead the text carefully and try to find out how
11、 many parts we can divide the text into and find out the main idea of each part.Part (Para_ to Para_ )Main ideaPart 1 (Para _1_)introduce a debate over the issue of global warmingPart 2 (Para _2_ to _4_)illustrate how global warming comes aboutPart 3 (Para _5_ to 10_)list two different attitudes amo
12、ng scientists towards global warmingPart 4 (Para _11_ to _)Its up to readers to think and decide whether people should do something about global warming or not.Step 5 DebateGet into groups of six. Decide which three in your group are going to agree with the statement and which three are going to dis
13、agree with the statement.Group A: We shall do something about global warming.Group B: We shall do nothing about global warming.Group A discuss why they agree with the statement; Group B discuss why they disagree.Group A and B get together. Tell each other the reasons why agree or disagree with the statement.Step 6 Homework1. Read the passage again and review the new words and expressions.2. Prepare the debate in groups.3. Surf the Internet for more information about global warming专心-专注-专业