Unit 4 Global warming reading

课件43张PPT。Words studyGlobal warmingUnit 4 ReadingThe Earth is Becoming Warmer---But Does it Matter?Green house A greenhouse is made of glass and is used for growing plants, especially during cold weather.Greenhouse effectMore information about Greenhouse effect Global warming参考网页Solcomhouse Site Map.htm
Video about Greenhouse effect
The greenhouse effect is a naturally occurring process that aids in heating the Earth's surface and atmosphere. It results from the fact that certain atmospheric gases, such as carbon dioxide, water vapor, and methane, are able to change the energy balance of the planet by absorbing longwave radiation emitted from the Earth's surface. Without the greenhouse effect life on this planet would probably not exist. graph
random
phenomenon
subscribe
fuel
quantity
tend
datan. 图表; 坐标图
adj. 胡乱的; 任意的
n. 现象
vi. 同意; 捐赠; 订阅
vt. 签署 (文件); 捐助
n. 燃料
n. 量; 数量
vi. 趋向; 易于 vt. 照顾
n. 资料; 数据Words previewtrend
catastrophe
flood
oppose
mild
consequence
state
rangen. 趋势; 倾向; 走向
n. 大灾难; 浩劫
n. 洪水; 水灾
vt. 反对; 反抗
adj. 温和的; 淡的
n. 结果; 后果; 影响
vt. 陈述; 说明
n. 种类; 范围Words preview come about
subscribe to
quantity of
go up
result in
be opposed to
even if
keep on发生; 造成
同意; 赞成; 订购
大量的
上升; 增长; 升起
导致
反对……
即使
继续Expressions previewYou can often get an idea of what a magazine article is about by glancing at the title, the first paragraph, the diagrams, and the enlarged quotes.A Useful SkillSkimming
to get
an overview
of the structure
of a magazine articleWhat’s the topic and how’s the text organized?It’s about global warming. It has a title; a first paragraph; the main text in 2 columns; graphs, quotes.skimming2. What’s the first graph about?It shows the temperature increase of one degree Fahrenheit between 1860 and 2000.Reading Comprehension Iskimming3. What’s the second graph about?It shows the carbon dioxide content in the atmosphere from 1957 to 1997.4. What’s the purpose of the last
paragraph of the article?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.Reading Comprehension I1.The purpose of the first paragraph is to ___.
introduce the writer B. explain a change
C. introduce the topic D. raise a question
2. The graphs are used to _____.
illustrate points by providing evidence
tell the change of temperature
tell the content of carbon dioxide in the air
interest the readersskimmingReading Comprehension IICareful reading to solve
difficult points1. …it is human activity that has caused this global warming rather than a random but natural phenomenon.a random but natural 修饰phenomenon，译为 “随意的自然的现象”，but起一个
语气转折的作用，可不译出。rather than 而不是……
She is a career woman rather than a housewife.
她是职业妇女而不是家庭主妇。
rather than 在更大程度上
These are political rather than social matters.
与其说这些是社会问题，不如说是
政治问题。2. come aboutcome about: take place; happen表示“发
生、产生”，多指事情已经发生了，但
还不知道为什么，常用于疑问句和否定
句, 例:
When Mother woke up, she didn’t
know what had come about.
I’ll never understand how it came about
that you were late three times a week.3. result in 导致, 造成 =lead toThe accident resulted in three people
being killed.
这一事故导致他的死亡。 The accident resulted in his death.
Acting before thinking always results in failure.
做事不先考虑总会导致失败。The accident resulted in the death of two people.
这场意外事故造成两人死亡。It is an illness that can result ___total deaf if left untreated. (A) of (B) from (C) in (D) to4. consequencein consequence 因此
as a consequence 结果
as a consequence of 由于……5. build upBuild up the business
Sediment (沉淀物)builds up on the
ocean floor.
This built up my hope after the interview.develop 扩大, 发展 collect 累积, 收集 增加, 支持, 树立6. even if /though: used to emphasize that, although something may happen or may be true, it will not change a situation
I wouldn't tell you even if I knew. Even if she survives, she'll never fully recover.
Even though he's 24 now, he's still like a little child.
I can still remember, even though it was so long ago.Read the passage quickly to find the main idea of each part(Paragraph 11 ) (Paragraphs 5-10 ) (Paragraphs 2-4) (Paragraph 1) (Paras 2---4 )( Para 1 )Introduce a debate over the issue of global warming. Raising a questionIllustrate how global warming comes about.Giving examples,
using graphs, explanation(Paras 5---10 ) List two different attitudes among scientists towards global warming.Giving examples, making contrast. (Para 11 ) It's up to readers to think and decide whether people should do something about global warming or not.Using a question, leaving readers to think over the issue. Scanning
to get
Detail informationTrue or false?( P27 )scanningReading Comprehension III21.The temperature in the last century didn’t seem to increase much.
2.Everyone believes that global warming is caused by the activities of humans.
3.Janice Foster believes she can measure the future global rise in temperature.
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.1.Greenhouse gases refer to_______.
carbon dioxide
B. the burning of fossil fuels
C. byproducts of the burning of fossil fuels
D. coal, natural gas and oil
2.Greenhouse effect _____.
A. is a natural phenomenon
B. happens when there’s too much carbon dioxide
C. does great harm to human beings
D. makes life for human beings betterscanningReading Comprehension IV3. _____ found out the amount of carbon
dioxide in the atmosphere from 1957 to1977.
A. Dr. Janice Foster B. Charles Keeling
C. George Hambley D. Sophie Armstrong
4. Which of the following statements is True?
Burning fossil fuels causes the global
warming.
B. We will have more food with global
warming.
C. Global warming means disasters to
humans.
D. More greenhouse gases will gather in the
atmosphere.The different ideas between Dr. Janice Foster & George Hambleygo upcatastrophevery seriouspositiveproduce morea greater range of animalsQuiz1. —Have you ______ some new ideas?
—Yeah. I’ll tell you later. [2007 江苏]
A. come about B. come into
C. come up with D. come out with
2. Please tell me how the accident_____. I am still in the dark. (2005 江西)
A. came by B. came out
C. came to D. came about
3. The accident ______ the death of two passengers.
A. resulted from B. resulted in
C. resulted of D. resulted with
I. Choose the proper answer4. It is the protection for the trees ____ really matters, rather than how many trees are planted.
A. what B. that C. / D. which
5. _____ the people, not things, that are the most important.
A. These are B. Those are
C. It is D. It isn’tII. Translation1. _______________________________(是人类活动引起) this global warming rather than a random but natural phenomenon.
2. __________________________________
______ (是一位名叫 Charles Keeling的科学家) made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997.It is human activity that has causedIt was a scientist called Charles Keeling who3. All scientists agree that _________________________________
(正是燃烧越来越多)fossil fuels __________________(导致了) this increase in carbon dioxide. it is the burning of more and morethat has resulted inSummaryWhat have you learnt from the text?Try to talk in general terms rather than in details.
eg: I learnt that the earth is becoming warmer.
I learnt that global warming could have terrible effects on the environment.
….DebateABA : We shall do something about global warming.B: We shall do nothing about global warming.
AssignmentRead the passage again and review the new words and expressions.
Prepare the debate in groups.
Surf the Internet for more information about global warming.Thank you!