6Text interpretation Warm-up questions Have you ever noticed any weather changes where you live?Do you have any idea of the greenhouse effect? What is the cause? What is the effect? What is a way out?Background Information外教社课件
7Text interpretation Answer the questions Ⅱ Comprehension on p.106What type is the text, generally?A. narrationB. expositionC. descriptionD. argumentation记叙文说明文描述文议论文
8Text interpretation What is the main idea/topic of the text? It explains the green house effect.The text is mainly in the pattern.A. general-specificB. problem-solutionC. cause-effect总分问题-解决因果
9Text interpretationTry to pick up those words or sentences that serve as links between paragraphs or parts of the text.2 it 3 what’s more 4 but here 6 eventually 7 not only…but 8 and all because of 9 it begins with 10 however 12 this means 14 but why 15 to blame 16 to make matters worse 17 whatever replaces 18 but this 19 what is to be done 20 first 21 second
10Text interpretation Part division Paras Main Ideas Parts 1 1-7 CO2 doesn’t seem to be but is a villain.CO2 keeps us warm but its continued concentration is disastrous.28-13Why is the concentration of CO2 steadily rising?314-18419-21What is to be done?
11Text interpretationWhat can we individuals do to reduce and stop the greenhouse effect?Your answers:1.2.3.
13Text interpretation 1. Ill air slays sooner than the sword. 污浊的空气杀人比刀还要快。2. Exercise, temperance, fresh air, and needful rest arethe best of all physicians.锻炼、节制、新鲜空气和必要的休息是最好的医生。名人名言 经典语录3. Fire and water are good servants, but badmasters.水火是忠仆，造灾成元凶。
14Text interpretationPlants covert it into their own tissue, which serve as the basic food supply…In all likelihood, it will continue to rise and do so at a greater rate…Where there are…, the water will advance steadily, forcing people to …Florida will disappear beneath the waves, as will much of the British Isles…And all because of carbon dioxide.It begins with the sunlight, to which …
15Text interpretation Sunlight, striking the top of the atmosphere… …the Earth cools by radiating heat into space in the form of infrared radiation.…the atmosphere is not quite as transparent to infrared radiation as it is to visible light.Carbon dioxide in particular tends to block such radiation.Less heat is lost…than would be lost if carbon dioxide were not present in the atmosphere.Without the small quantity of that gas present, the Earth would be distinctly cooler…
16Text interpretation …that is where the villainy comes in. Each year since, the concentration has crept upward and it now stands at …It is estimated that by 2020 the concentration will be nearly twice what it is now.Something like 90 percent of the ice…To blame are two factors.…new sources of fuel that do not involve the production of carbon dioxide.
18Sentence structureFlorida will disappear beneath the waves, as will much of the British Isles, the crowded Nile valley, and the low-lying areas of China, India, and Russia.It is estimated that by 2020 the concentration will be nearly twice what it is now.Do the exercises on pp 112-3
19TranslationIf the rich countries spent more money on green industries, instead of on building military machines and nuclear weapons, many of today’s widespread pollution problems would gradually disappear.The burning of coal not only consumes the oxygen in the house but also gives out poisonous gases.Apparently, finding alternative energy sources is essential to the steady development of our economy.Solar cells can absorb sunlight and convert it into electricity.
20TranslationIf the temperature on the Earth continues to go up from year to year, the polar ice caps will begin to melt and, in all likelihood, half of the buildings in coastal cities will disappear beneath splashing sea waves.Because these creatures are small and tend to hide beneath leafy plants, they are not always visible to the naked eye.As a result of exposure to atomic radiation, he finally collapsed at work.There is distinct evidence of the connection between heavy pressure of work and some disorders of the body.
21Reading Skill Looking for the thesis statement A thesis statement is a single sentence that states the central idea of an essay and conveys the writer’s attitude or purpose. Some writers include a thesis statement in introduction; others prefer to omit this explicit statement and just to give a general sense of the topic or thesis.(p. 116, Book 2)
22Guided writing Paragraph Writing A paragraph is a set of sentences, all dealing with the same general idea and linked together in a smooth sequence. The sentences that support and expand the topic may include facts, examples, illustrations, definitions, and explanations. The progression from one sentence to the next is clearer to read if the writer carefully includes transitions.外教社PPT
23Recitation & Retelling What is the green-house effect? How does it work?Do you agree that CO2 is a villain?RecitationRetelling
24Homework Other exercises Recitation Passage Fast reading Review PreviewDon’t forget your plan & promise.
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