1、必修5To get a general idea of what we are going to learn in this unitTo learn the types of environmental problems in this unitTo find some solutions to the environmental problems in this unitWhat did you see from this flash?What did you see from this advertisement?A healthy environment is important fo
2、r our survival.However,more and more disasters happenHow many kinds of natural disasters do you know?natural disastersfirevolcanoearthquakedroughttyphoonflood hurricanetsunamimore about the natural disastersHow do they damage the environment?The ashes of the volcano eruption will completely cover th
3、e region around.Vegetations in its path will be totally wiped out.The tsunami that ravaged South-east Asian countries in December 2004 proved just how destructive nature can be.Thousands of people died while thousands more were left homeless.Compared with the last few years,the environment is gettin
4、g worse.Are there any other environmental problems?SandstormGreenhouse effectAcidrainDid you do anything bad for theenvironment in your daily life?What should we do to protect the environment in our daily life?1.Use the handkerchief instead of 2.the paper napkin.2.Use paper bags instead of plastic b
5、ags.3.Dont use one-off chopsticks.4.Go to work on foot or by bike,by bus,not by car.5.Throw cans,bottles,paper and plastic into the dustbin.The recycling symbolBuy recycled productsRecycled productsRecycle the bottlesRecycle paperYour paper could become part of a road or race-track.Use low-flow show
6、er headsBuy energy-efficient light bulbsreplacewithA nation destroying itsenvironmentdestroys itself.-F.D.RooseveltNow,look at the pictures on Page 21,and discuss:1.Which of these problems are caused by nature and which are caused by man?2.Can you think of other natural disasters that damage the env
7、ironment?3.Can you think of other ways in which people damage the environment?Preview the wordlist in this unitPreview Reading on Pages 22-23Think about how to read a debate1.Collect more information about 2.natural disasters or human activitiesthat cause damage to our environment.2.Sum up your information into 100 words.Think about what weve just learnt today.Study without reflection is a waste of time.After the classIts time to stop the class for us to look back in silence.
