人教版英语选修6第四单元warmingup和reading.pptx

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1、Unit 4 Global Warming,We depend on energy to do many things in our daily lives.For example,energy lights ourcities and heats our buildings.Make a list of things that use energy in your home,in your school,or any other places you can think of.6 students a group.,TV,Fridge,Washing machine,Things depen

2、ding energy in our everyday life,Air conditioner,Microwave oven,Where does all this energy come from?Make another list of as many resourcesAs you can.,Wind energy,Coal energy,Oil energy,Nuclear energy,Solar energy,hydropower,An energy source is“renewable”when supplies Of it never run out and“non-ren

3、ewable”when One day they will run out.Which energy source on you list are renewable and which are non-renewable?,Thinking,renewable,Non-renewable,renewable,renewable,renewable,renewable,renewable,Non-renewable,Non-renewable,renewable,greenhouse,Why the greenhouse can make the plants grow?,DISCUSSION

4、,In the atmosphere surrounding the earth there are gases called“green-house gases”.What do you think greenhouse gases do?,Reading,The Earth Is Becoming Warmer-But does It Matter?,Reading 1,Read the passage quickly and answer the following questions.,1.Who wrote the magazine article?What is the name

5、of the magazine?2.What are the names of three scientists mentioned in the article?3.What do they think about global warming?Do they agree with one another?4.What are the two graphs about?,1.Who wrote the magazine article?What is the name of the magazine?,Sophie Armstrong.Earth Care.,2.What are the n

6、ames of 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?,There are some very different attitudes among scientists towards this issue.Some think the effects will be terrible,while some

7、 others Believe that we should not worry about it.,4.What are the two graphs about?,The first graph shows the temperature increase of one degree Fahrenheit between 1860 to 2000.The second graph shows the Carbon dioxide content in the atmosphere from 1957 to 1997.,Reading 2,Read the passage carefully

8、 and judge whether the statements are true or false?,1.The temperature in the last century didnt seem to increase too 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.()4.The ris

9、e in carbon dioxide is causing a steady increase in global warming.()5.It is clear what the effects of global warming will be.(),T,T,T,F,F,Read the passage again and make the best choices.,Who found out the amount of carbon dioxide in the atmosphere from 1957 to 1977?A.Dr.Janice Foster.B.Charles Kee

10、ling.C.George Hambley.D.Sophie Armstrong.,Reading 3,2.The author probably agrees that _A.actually global warming is good for man.B.we should do nothing about the global warming.C.catastrophes will happen if the globe keeps on warming.D.a lot remains to be found out about the effects of global warming.,Discussion,What else should we do to reduce the amount of carbon dioxide?,Homework:,1.Recite the new words and expressions of this part.2.Complete Exercise 1 and 2 on page 31.,Goodbye!,