1、Unit 2 Saving the EarthTopic 3What can we do at home to protect the environment?Section C 课件课件 1Use but,and,while to answer the following questions.What activities should we do to protect the environment?What activities shouldnt we do to protect the environment?Look up these words in a dictionary.po
2、wer acid rain nuclear renewable electric efficient电力；电力；动力；力动力；力酸雨酸雨原子核的，原子核的，原子能的；原子能的；核动力的核动力的可更新的可更新的电动的，电动的，用电的用电的效率高的；效率高的；有能力的有能力的Wind is used for producing electricity in many places.Look at the following pictures and guess the meaningof the underlined word.More and more people are interested
3、 in electric cars.Look at the following pictures and guess the meaningof the underlined word.The maglev train in Shanghai uses magnets.The magnets push the train forward.Look at the following pictures and guess the meaningof the underlined words.people produce power from coal,but it is verydirty and
4、 causes acid rain.Look at the following pictures and guess the meaningof the underlined words.Nuclear power is clean but it is very dangerous.Look at the following pictures and guess the meaning of the underlined word.Read 1a and answer the following questions.Why isnt coal a good material?What is t
5、he disadvantage of using nuclear power?What do you think of electric cars?What do you think of the maglev train?It is very dirty and causes acid rain.Nuclear power can be very dangerous.It is quiet and quick.They are very efficient and cost very little to run.Choose the right picture for each paragr
6、aph of 1a.abcChina is one of the first countries in the world to use biogas technology.Farmers recycle straw,grass and animal waste to make biogas.This renewable energy is used in peoples everyday life.Electric vehicles were developed in the 1990s.Now there are electric vehicles in many countries.Th
7、ey are very efficient and cost very little to run.Although electric vehicles produce no pollution,there will be an increase in electricity needs if they are widely used.In China,the best-known maglev train is the German-built one in Shanghai.It takes people just 7 minutes to go to the airport 30 km
8、away and reaches a top speed of 431 km per hour.It is quiet and quick.There is no wheel noise,because there are no wheels.Maglev trains are very energy efficient and do not pollute the air.However,maglev guide paths are much more expensive than traditional steel railways.1bWork aloneRead 1a again an
9、d fill out the following table.Way to produce powerAdvantageDisadvantagebiogaselectric vehiclemaglev trainrenewable efficient,cheap,no pollution quiet,quick,energry efficient,no pollution It will cause an increase in electricity needs.much more expensive than traditional trains.a.There are more than
10、 3 000 power stations in the world that produce electricity by burning garbage to heat water.b.People use the movement of water to produce electricity.c.Wind is used for producing electricity in many places.d.People produce electricity from the sun.()()()()abdcFill in the blanks using but,and,though
11、 and while.1._ its raining hard,he keeps on working outside.2.Kangkang can solve the problem,_ I cant.3.Mr.Lin is very kind _ he is very humorous.4.The suit fits me well _ I cant afford it.Though while and but Use but,and,though and while to describe the ways of producing power.3Written workWhat goo
12、d habits protect the environment?List as many as you can.The more you list,the greener you are.Good Habits1.Turn off the lights when you leave a room.2.Walk or ride a bike instead of taking a bus or a taxi.3.Take a cloth bag when you go shopping.4.Dont use plastic bags.Useful expressionsIn many coun
13、tries,people produce power from coal or nuclear energy.Its a pity that its too expensive to use in most of China.Work in groupsThink of more ways to produce power.And talk about their advantages and disadvantages.The method we have knownThe new method animal waste burn garbage water sun wind magnets
14、Many people in the world are tryingto protect the environment.Are you a greener person?Answer the following questions to see how green you are.Are you a greener person?Answer the following questions to see how green you are.1、Do you usually recycle newspaper or cans?Often.Seldom.Never.2.Do you usual
15、ly take?a bath a shower3.What do you usually do when you see others littering?Stop them.Pick the litter up.Do nothing.Are you a greener person?Answer the following questions to see how green you are.Are you a greener person?Answer the following questions to see how green you are.4、When you make a sh
16、ort journey,do you usually _?walk or ride a bike go by car go by busAre you a greener person?Answer the following questions to see how green you are.5、What type of bags do you often use for shopping?Baskets or cloth bags.Reused plastic bags.New plastic bags.Are you a greener person?Answer the follow
17、ing questions to see how green you are.6、How often do you turn off the lights when you leave a room?Nearly always.Seldom.Never.Are you a greener person?Answer the following questions to see how green you are.7、How often do you use paper towels?Often.Seldom.Never.Can you ask more questions to seehow
18、green your classmates are?Score:04 You have not started turning green yet!59 You are pale green.1013 You are medium green.Try harder.1418 You are bright green,but do not stop trying.=2=1=0Group workWork in groups and talk about your answers and scores in 2a like this:My score is.This means that.To be greener,Ill.1、列出更多的保护环境的好习惯。、列出更多的保护环境的好习惯。2、课后搜集好的节能环保的方、课后搜集好的节能环保的方 法或者产品与大家交流。法或者产品与大家交流。3、预习、预习Section D。
