Book6英语必修六-Unit4-Global-warming-Reading-精品课件.ppt

1、Unit 4 Global warming Reading,高二人教新课标版选修六,1. Have you ever seen a greenhouse?,2. How does the greenhouse work?,The air inside was warm because the glass traps (挡住, 吸收) the heat from the sun and keeps it from escaping (逃跑). This makes the greenhouse heat up (热量 上升) and so the plants can grow Througho

2、ut (在期间) the cold period.,3. What are Greenhouse Gases?,4. Greenhouse Effect,Global warming,Greenhouse gases trapped the heat from the sun, which causes the temperature of earth goes up.,Greenhouse,Global warming,Are they all beneficial?,？,THE EARTH IS BECOMING WARMER BUT DOES IT MATTER?,Reading,1)

3、How many paragraphs does the reading 2) Make a division of the text.,Read the passage quickly (3),text consist of? Please number them.,Fast-Reading,Main ideas of each part:,Part1 (1),Introduce a debate over the issue of global warming.,raising a question,Part2 (2-5),How global warming comes about.,g

4、iving examples, using graphs, explanation,List two different attitudes among scientists towards global warming.,Its up to readers to think and decide whether people should do something about global warming or not.,giving examples, making contrast,leaving a question,Are the risks too great?,So can yo

5、u predict the future of the global warming?,True or false? 1. The temperature in the last century did not seem to increase much. 2. Everyone believes that global warming is caused by the activities of humans. 3. Janice Foster believes that she can measure the future global rise in temperature.,T,T,F

6、,4. The rise in carbon dioxide is causing a steady increase in global warming. 5. George Hambley believes that global warming will do good rather than harm to the earth. 6. It is clear what the effects of global warming will be.,T,T,F,Who writes this article? Sophie Armstrong of Earth Care What rose

7、 about one degree Fahrenheit? The temperature of the earth.,Careful reading,Part1 (1),Introduction of global warming.,It is a rapid increase when compared to other natural changes.,compare vt. 1)比较; 对照 comparewith表示“把与相比 (同类相比)” 如：,Language points,Compare your answers with those at the back of the b

8、ook to see if they are right.,把你的答案同书后面的答案对照一下, 看看是否正确。,2) 喻为; 比拟 compareto 表示“把比做(异 类相比, 比喻)” 如： Mans life is often compared to a candle. 人生常被比为蜡烛。,Shakespeare compared the world to a stage. 莎士比亚把人世比做舞台。,知识拓展 compared to /with 与相比, 一般在句子中作状语。 Compared to/with many women, she was indeed very fortuna

9、te.,come about: 发生, 造成, 相当于happen 你能告诉我事故是怎么发生的吗？ Can you tell me how the accident came about? 随着电的使用, 种种大变化发生了。 With the use of electricity, great changes have come about. come out 出现; 传开; 公开 come up 发生、举行; 出现,2. So how has this come about and does it matter?,come about 是不及物短语。如： 1) Please tell me

10、how the accident _. I am still in the dark. (2005 江西) A. came by B. came out C. came to D. came about,D,2) Its already 10 oclock. I wonder how it _ that she was two hours late on such a short trip. (湖北2006) A. came over B. came out C. came about D. came up 解析: 已经十点钟了, 我不知道是怎么 回事, 这么短的路程她迟到了两个小时。 com

11、e over 来访 come out 出来, 出版 come up 出现,C,2. _,1. _,Part2 (2-5),How global warming comes about?,the burning of fossil fuels,human activity,Carbon dioxide,Methane,What are the Greenhouse gases?,1. 2. 3.,Water vapor,3. There is no doubt that.,doubt 肯定句中doubt多接whether (一般不用if代替) 同位语从句。如: Theres some doubt

12、 _ hell keep his promise. 他会不会信守诺言还难说。 She had her doubts _ the new book would sell well. 她怀疑新书是否会畅销。,whether,whether,Language points,否定句中doubt多接that同位语从句。如: There is no doubt _ they will ask you for help. 毫无疑问, 他们会请你帮忙的。 I have no doubt _ you will succeed. 我毫不怀疑你会成功的。,that,that,考点1 There is no doub

13、t that .是固定 句型, 意为“毫无疑问”, that引导的 是同位语从句，用来进一步补充说明 doubt的具体内容。如： Some researchers believe that there is no doubt _ a cure for AIDS will be found. (广东2005) A. which B. thatC. what D. whether,B,4. phenomenon n. 现象; 奇迹; 罕见的人才 或事物 eg: 雨雪是天气现象。 Rain and snow are phenomena of the weather. eg: 贝多芬是音乐家中的天才。

14、 Beethoven was _ among musicians.,pl. phenomena,a phenomenon,5. subscribe to 1) 同意; 支持I dont subscribe to such views. 我不同意这样的观点。 2) 对捐款Many people subscribed liberally to the relief fund. 许多人为救灾基金慷慨解囊。,3) (在文件等下面)签名 He subscribed his name to a petition. 他在请愿书上签名。 4) 订阅(书籍等) He subscribed to Readers

15、Digest. 他订阅读者文摘。,6. quantity n. 数量; 量 “a large/small quantity of +不可数名词 和可数名词复数”表示“大量的/少量的”, 也可以用“large/small quantities of + 不可数名词或可数名词复数”来表达。 用法归纳: a quantity of 大量的 quantities of 大量的 There is a small quantity of water left in the bottle. She has quantities of good clothes.,特别提示 a quantity of 后可接不

16、可数名词或 可数名词的复数形式。当它修饰名词 作主语时, 谓语动词用单数; 而quantities of后同样可接不可数名词 或可数名词的复数形式, 但谓语用复数。 amounts of + 不可数名词充当句子 的主语时, 其谓语动词用复数。,7. go up 1) 上升Prices have gone up again. 物价又上涨了。 2) 被建造起来New factories are going up everywhere. 到处在兴建新工厂。 3) 被焚毁The whole building went up in flames. 整幢楼被焚毁了。,8. It was a scienti

17、st called Charles Keeling who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997. 是一位名叫查尔斯奎林的科学家把1957至1997年期间大气层中二氧化碳的含量作了精确的统计。 解析: 该句是一个强调句。,9. result in 结果; 致使; 导致 主语: in 的宾语:,起因,结果,Acting before thinking always results _ failure. 做事不先考虑总会导致失败。 The acci

18、dent resulted _ the death of two people. 这场意外事故造成两人死亡。,in,in,result from 起于, 由于, 由引起 主语： from 的宾语： His sickness resulted _ eating too much.,起因,结果,from,Part3 (6-7),What are the effects of global warming?,a rise in the sea level Severe storms, droughts, famines, the spread of diseases, and the disappe

19、arance of species Make plants grow faster,effects,10. On the other hand, there are those, like George Hambley, who are opposed to this view, believe that we should not worry about high levels of carbon dioxide in the air. 在另一方面, 还有一些人, 对这一观点 持反对态度, 像科学家乔治 汉布利, 他们认为我们不必担心空气中高含量 的二氧化碳。,分析: 该句是一个主从复合句。

20、主句为 there are those, like scientist George Hambley 作句子的插入语, who引导的 定语从句修饰those, 且在该定语从句中 其谓语动词believe又带有that引导的 宾语从句。句子的主要部分可以表示为: . there are those who believe that .,on the other hand: 另一方面 Id like to eat out, but on the other hand I should be trying to save money. I want to go to the party, but o

21、n the other hand I ought to be studying. 我想去参加聚会, 但从另一方面来说, 我应该留下来学习。,11. oppose vt. 反对; 反抗 如： I am opposed to going shopping with others. 我反对与他人一起外出购物。 oppose sth./doing sth. 反对某事/做某事 be opposed to sth./ to doing sth. 反对某事/做某事 oppose后若接动词, 则用其动名词形式， 而不用动词不定式。,oppose doing sth.= object to doing sth.

22、 反对做某事 The young man opposed/objected to turning to his parents for help. 这个年轻人反对向他的父母求助。 易混辨析 oppose (尤指采取行动)反对, 反抗(某事) be opposed to 一方面相当于be against “反对”; 另一方面相当于be opposite to “相对”。,12. consequence n. 结果, 后果, 影响,in consequence 因此 as a consequence 结果 as a consequence of 由于的结果,It rained yesterday

23、and in consequence the match was canceled. He studied hard, and in consequence he passed the exam.,+n. 13. state +that从句 +wh-从句；,他已公开声明他会支持那项政策。 He has publicly _ _ _ for the policy.,stated his support,我听见那位官员说不接纳儿童。 I heard the official state that they would not accept children. 合同清楚地叙述了那项工作应在何时完成。 The contract stated when the wo