英语赛课选修6-Unit4-Global-warming

1、 Unit 4 Global Warming Do you believe it?What is global warming?The earth is becoming warmer.2.What do you think causes the global warming?Pre-reading (P25)What is it in the picture?Its a greenhouse made of glass.What is it used for?Its used for growing plants, especially during cold weather.How doe

2、s it work? The air inside is warm because the glass traps the heat from the sun and keeps it from escaping. This makes the greenhouse heat up and so the plants can grow throughout the cold period.Greenhouse effectOwing to the greenhouse effect, the earth is becoming warmer But does it matter?Skim th

3、e title: (P26)THE EARTH IS BECOMING WARMER BUT DOES IT MATTER?What is probably the main topic?The earth. B. Global warming. C. Becoming warmer doesnt matter. Where does this article most probably come from?Newspaper B. Novel C. Magazine Task 1Fast readingMatch the main idea of each partSkim the body

4、 part(7 paras): Para. 1Para. 2-5IIIPara. 6IIIPara. 7IVIntroduction Body ConclusionPart1c. an introduction of global warmingPart 2Part 3Part 4d. How global warming comes about a. two different attitudes towards global warmingb. whether people should do sth. about global warming(Para_ )(Para_to _ )(Pa

5、ra_ )(Para_ )12567Match the main idea of each part: Task 2Careful readingWho wrote the article?What is the name of the magazine?Tip: In English, some nouns begin with a capital letter(大写字母), such as names of people and places, titles of magazines, newspapers, stories and books, peoples titles(头衔), e

6、tc.Sophie ArmstrongEarth CarePart I (Para 1) Greenhouse effect is a natural p_ . Greenhouse gases in the atmosphere can warm the earth by trapping heat energy. But the problem begins when we add huge q_ of extra carbon dioxide to the atmosphere by burning fossil f_ . Therefore, more heat energy is t

7、_ in the atmosphere. It is the increased amount of carbon dioxide that is r_ in global warming. Fill in the blanks about the causes of Greenhouse effect.henomenon uantitiesuels rapped esultingPart II(Para2-5)What causes the global warming?Human activityburning of fossil fuelsGreenhouse effectgreenho

8、use gasesHuge quantities of extra carbon dioxideDr. Janice Foster thinks the effects of global warming could be very serious.George Hambley thinks global warming will be mild with few bad environmental consequences. Part III (Para6)What will global warming bring to us ?(Find out supportingevidence)c

9、ause the sea level to risesevere stormsdroughts/floodsfaminesthe spread of diseasesdisappearance of speciesPositive effects Negative effects cause the sea level to risesevere stormsdroughts/floodsfaminesthe spread of diseasesdisappearance of speciesPositive effects Negative effects make plants grow

10、fastercrops will produce morea greater range of animalsmake life better The author probably agrees that _A. actually global warming is good for mankind.B. we should do nothing about the global warming.C. catastrophes will happen if the globe keeps on warming.D. a lot remains to be found out about th

11、e effects of global warming.Part IV (Para7)Task 3Further comprehension1.The purpose of the first paragraph is to _. introduce the writer B. explain a changeC. introduce the topic D. raise a question2. The graphs are used to _.illustrate points by providing evidence tell the change of temperaturetell

12、 the content of carbon dioxide in the airinterest the readersFurther Comprehension3. Whats the purpose of the last paragraph of the passage?It functions as a conclusion by asking the reader to reflect on the major theme of the text and to predict what might happen in the future. Task 4 Discussing &

13、speaking It is said that the climate is going to keep on warming for decades or centuries. What will happen if we do nothing about it ? DiscussionDicussionWhat should we do about the terrible effects caused by global warming?.Try to reduce the use of motor vehiclesbikerunningSolar energy carPlanting treesCleaning the rubbishLets m