仁爱版九年级上Unit2Topic3SectionC课件.ppt

Unit 2 Topic 3 What kinds of things can we do to protect the environment?,Section C,-By David,1._ its raining hard,he keeps on working outside.2.Kangkang can play the voilin,_ I cant.3.Mr.Lin is very kind _ he is very humorous,too.4.The suit fits me well _ I cant afford it.,Though,while,and,but,Fill in the blanks using but,and,though and while.,Revision:,What new ways have been invented to produce power?,Ask and answer:,electric vehicle,biogas technology,What new ways have been invented to produce power?,Ask and answer:,maglev train,water battery,Look up these words in a dictionary.,power,acid rain,nuclear,renewable,electric,efficient,电力；动力；力,酸雨,原子核的，原子能的；核动力的,可更新的,电动的，用电的,效率高的；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.,Guessing game,More and more people are interested in electric cars.,Guessing game,The maglev train in Shanghai uses magnets.The magnets push the train forward.,Guessing game,people produce power from coal,but it is very dirty and causes acid rain.,Guessing game,Nuclear power is clean but it is very dangerous.,Guessing game,Read and understand,1a,Choose the right picture for each paragraph.,In many countries,people produce power from coal,but it is very dirty and causes acid rain.Some countries use nuclear energy to produce power.However,nuclear power can be very dangerous.To solve the energy problem,people all over the world are looking all the time for new ways to produce power.,c,_China 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.,Choose the right picture for each paragraph.,_ Electric vehicles were developed in the 1990s.Now there are electric vehicles in many countries.They 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.,a,_ In China,the best-known maglev train is the German-built one in Shanghai.It takes people 30km to the airport in just 7 minutes 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 street railways.,b,1.Why isnt coal a good material?2.What is the disadvantage of using nuclear power?3.What do you think of electric cars?4.What do you think of the maglev train?,Because it is very dirty and causes acid rain.,Because it can be very dangerous.,It is quiet and quick.,They are very efficient and cost very little to run.,Ask and answer:,Answer the following questions according to 1a.,Read 1a again and fill out the following table.,renewable,efficient,cheap,no pollution,quiet,quick,energy efficient,no pollution,It will cause an increase in electricity needs.,much more expensive than traditional trains.,Work alone:,1b,power stations,the movement of water,the wind power,solar energy,a.There are more than 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.,(b),(c),(d),Work alone,(a),2a,What habits are good for the environment?List as many as you can.The more you list,the greener you are.,Good Habits,1.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.,3,Written work:,Homework:,Copy the words and phrases.抄写单词和词组。2.Study Case:导学案Unit 2 Topic 3 Section C3.Recite 1a Passage.背诵1a课文。,Class is over!,Good-bye!,