英语温室效应MicrosoftPowerPoint演示文稿.ppt

Unit 4 Global warming,What is the greenhouse made and used for? A greenhouse is made of glass and is used for growing plants, especially during cold weather.,Scanning,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, Charles 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 consequences. Charles Keeling believes it is the burning of more and more fossil fuels that is resulting in a big increase 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 1957 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 earth.,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 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 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. Keys: True: 3, 5, 6, 7, and 8 False: 1, 2, 4, 9, 10,Detailed reading,Read 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.,Main idea,Part 1 (Para 1) Introduce a debate over the issue of global warming Part 2 (Para 2 to 4) illustrate how global warming comes about Part 3 (Para 5 to 10) list two different attitudes among scientists towards global warming Part 4 (Para 11 ) Its up to readers to think and decide whether people should do something about global warming or not.,Language points,Warming up 1.consume n. (1)to use sth especially fuel,energy or time 消耗，消费（燃料，能量，时间等） Eg:The electricity industry consumes large amounts of fossil fuels. 电力工业消耗大量的矿物燃料。 （2）to eat or drink sth . 吃，喝，饮 Eg:他死之前喝了大量的酒。 Before he died , he had consumed a large quantity of alcohol. 2Renewable adj . (1) 可更新的，可再生的 Eg:Renewable sources of energy such as wind and solar power. 像风能和太阳能这样用之不竭的能源。 （2）可延长有效期的 Eg:这份工作许可证不能延期。 The work permit is not renewable.,3.come about：to take place；to happen出现；发生 Eg:How did it come about？这件事是怎么发生的？ Eg:Please tell me how the accident came about. I am still in the dark! 请告诉我这个故事是怎么发生的，我还蒙在鼓里呢！ 链接 come across偶然遇到/碰到 come to 恢复知觉；总共，共计 come out 显露；出版，发行 come along 出现，发生；进步，进展 经典回放Ist already 10 oclock . I wonder how it _that she was two hours late on such a short trip.A. came over B. came out C. came about D. came up,4.random . adj 随意的，任意的 1)It is the random killing of innocent people. 这是对无辜者的随意杀戮。 2)名字是从名单中任意点的。 Names were chosen at random form a list. 拓展 at random 胡乱地，随意的经典回放 The lucky fans will be picked out _ rather than chosen beforehand to perform with the singer during the party. A.by accident B. on earth C. at random D. on average,5. subscribe v. (1)订阅 which journals does the library subscribe to? 图书馆订哪些报刊？ （2）定期捐助 he subscribes regularly to Red Cross. 他定期向红十字会捐款。,6.a quantity of/quantities of +c .n . /u.c.n . 1)There are quantities of rice/csts in the room. 2)Large quantities of water have been polluted. 3)The changes of quantitiy causes of the quality 7.go up 1)The price has gone up again. 2)New buildings are going up everywhere. 3)The gas tank was hit and went up in flames. go around 传播 go by 消失； go down 下降 go in for 参加 go over 复习 go through 经历 经典回放 Do you think that housing price will keep _ in the years to come? Sorry , I have no idea. A. lifting up B. going up C. bringing up D. growing up,8.date n (1) 数据，资料 这些数据是从69个国家收集来的。 This data was collected from 69 countries. （2） data capture 数据获得 单词积累 datebank n. 数据库 database n.资料库 date n.日期；v.注明日期，写上日期,9.result in : 导致，引起 The accident resulted in three people being consequence. 这次事故造成3人死亡。 链接 as a result 结果 as a result of 作为的结果 with the result of 因此 result from 由产生 提示 result in = lead to 导致，引起（其后接结果） result from = lie in 源于（其后接原因）,10.trend Economic/social/political trends There is a growing trend towards earlier retirement 11catastrophe=disaster/difficulties 1)Early warning of rising levels prevented another major catastrophe. 2)We have a few catastrophes with the food for the party. 12.severe adj. (1) 严格的；苛刻的 Dont be so severe to her ,she couldnt help it. 别对她太严,她也是没有办法。 （2）剧痛的；剧烈的；严重的，难熬的 He is suffering from severe mental disorder. 他患有严重的精神病。,13.oppose=disagree This party opposed the reintroduction of the death penalty. He found himself opposed by his own deputy. He opposed to working on Sundays.,14.mild adj. (1) gentle or kind 和善的；温柔的 今天天气好很温暖，不热也不冷。 The weather is mild today ;it is neither hot nor cold. (2)不严重的，轻微的 今年冬天不冷 Tt is been a mild winter this year.,15. consequence n. 1)结局，结果 As a consequence of being in hospital,Mary decided that she wanted to becme a nurse。 2)重要性，价值 It is of any consequence to you? 【扩展】 in consequence 因此，由此 as a consequence 结果，因此,16.range 1)种类，山脉 These are our new range of hair products. 2)变化，变动 衬衫的价格从150元到500元不等. The price of the shirts ranges from 150 to 500 yuan 扩展range fromto在到范围内变化 In/within range在可及的范围内，在视觉听觉范围内,17.state vt =to set forth in words陈述，叙述 please state your name ,age and occupation on the form . 请在表上填写你的姓名、年龄和职业 18.keep on :to continue to do sth.继续下去 The rain kept on all night.雨彻夜下个不停。 【链接 】 ke