1、课 题Unit4 Global warming (Reading)第 2 教时教学目标1, Enable the students to talk about different sources of energy.2, Enable the students to read the text, understand what it is about and talk about the causes and effects of global warming.重、难点1,To understand the whole passage and get the hang of the readi
2、ng skills2, Enable the students to get a better understanding of articles of this kind.教学过程修改意见Teaching procedures Step 1 Warming upT：Now lets look at a picture on the slide and answer the question below.Anwer:What is the greenhouse made and used for?Ss: A greenhouse is made of glass and is used for
3、 growing plants, especially during 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? Key:Sophie ,Armstrong, Earth Care.2. What are the names of the three scientists mentio
4、ned in the article?Key: Janice Foster, Charles Keeling, George Hambley.3. What do they think about global warming? Do they agree with one another?Key: They dont agree with each other.Dr Janice Foster thinks the effects of global warming could be very serious. George Hambley thinks global warming wil
5、l be mild with Few bad environmental consequences. Charles Keeling believes it is the burning of more and more fossil fuels that is resulting in abig increase in carbon dioxide.4. What are the two graphs about?Key: The first graph shows the temperature increase of one degree Fahrenheit between 1860
6、to 2000. The second graph shows the carbon dioxide content in the atmosphere from 1957 to1977.5. What is the main topic of the article?Key: Global warming/ the warming of the earth.Step 3 Skimming Read the passage carefully and judge whether the statements are true or false.1,The temperature in the
7、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 by the burning fossil fuels.4,Natural gas is a greenhouse gas.5,Carbon dioxide is a byproduct of burning fossil fuels.6. People accept
8、 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 guessing about the effects of global warming.9. George Hambley is worried about the effects of carbon dioxide on plant growth.10
9、. 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 many parts we can divide the text into and find out the main idea of each part.Part (Para_ to Para_ )Main ideaPart 1 (Par
10、a _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 among scientists towards global warmingPart 4 (Para _11_ to _)Its up to readers to think and decide whether people should do
11、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 disagreeStep six: Homeworkunderline the useful words, phrases and sentences of this passageListen to the tape again and again and read the passage by yourself教学反思注：课题用三号字加粗，其它用五号字，行距用固定值、20磅，双面打印。