课件25张PPT。Unit 4 Global Warming学科：英语
版本：人教新课标选修六
Unit 4Global Warming人教新课标选修六
Clear waters and green mountains are worth piles of gold and silver.
------ President Xi
It is everybody's responsibility to protect our envionment.
Many problems often happen to the earth, such as:
Global Warmingflooddrought It is _____ _____ that caused this global warming.human activityHow does the warming come about?
How does the warming come about?
some gases: the most important one of all the gases is _____ ______The gases can cause ________ effect.carbon dioxidegreenhouseGreenhouse gases!What’s greenhouse gases effect?Greenhouse gases perform the same fun_ction as the glass in a greenhouse --- They trap the heat of the sun and keep the air surrounding the earth warm.
It is called the greenhouse effect.
People's burning more and more fossile fuels caused extra carbon dioxide in the air.( )
How high will the temprature increase go over the next 100 years?
A. 1-1.5 degrees Celsius
B. 5 degrees Celsius
C. not sureT What are the attitudes of the scientists about the global warming?
The author probably agrees that ________.
global warming is good for us
B. we can do nothing about global warming
C. catastrophes will happen if the globe keeps on warming
D. much remains to be found out about the effects of global warming
Whose opinion do you agree to?The Earth Is Becoming Warmer – But Does It Matter?inteviewingskimming Skim the text to get the main idea of the passage and each paragraph, then divide the whole passage into 4 parts and summarise the main idea of each part.Main ideas of each partPart1
(1)Introduce a debate over the issue of global warmingPart2
(2-5)Explanation about how global warming comes about.Part3
(6)Two different attitudes among scientists towards global warming.Part4
(7)Two choices of dealing with this problem.Choose the best answer.
The first graph in the text is used to ________.
attract readers’ attention
B. introduce the topic of global warming
C. act as an example
D. support the opinion and make it more convincingwritingWrite a short passage about global warming, including the following words:
Nowadays, the earth is becoming warmer and warmer,
human activities, greenhouse effect, over the last 100 years, over the next 100 years, the attitude of scientists, in my opinion. Unit 4 Global Warming
It is _____ _____ that caused this global warming.
2. How does the warming come about?
3. some gases: the most important one of all the gases is _____ ______
4. The gases can cause ________ effect.
5. What’s greenhouse gases effect?
People's burning more and more fossile fuels caused extra carbon dioxide in the air.( )
How high will the temprature increase go over the next 100 years?
A. 1-1.5 degrees Celsius
B. 5 degrees Celsius
C. not sure
What are the attitudes of the scientists about the global warming?
The author probably agrees that ________.
A.global warming is good for us
B. we can do nothing about global warming
C. catastrophes will happen if the globe keeps on warming
D. much remains to be found out about the effects of global warming
10. Whose opinion do you agree?
11.Main ideas of each part
introduce a debate over the issue of global warming
Explanation about how global warming comes about.
Two different attitudes among scientists towards global warming.
Two choices of dealing with this problem.
Choose the best answer.
The first graph in the text is used to ________.
A.attract readers’ attention
B. introduce the topic of global warming
C. act as an example
D. support the opinion and make it more convincing
