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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit 2 Topic 3,Would you like to be,a,greener,person?,Section,C,Use,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.,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 meaning,of the underlined word.,More and more people are interested in,electric,cars.,Look at the,following,pictures and guess the meaning,of the underlined word.,The maglev train in Shanghai uses,magnet,s.,The magnets push the train,forward,.,Look at the,following,pictures and guess the meaning,of the underlined words.,people produce,power,from coal, but it is very,dirty and causes,acid rain,.,Look at the,following,pictures and guess the meaning,of 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 the disadvantage of using nuclear power?,What do you think of electric cars?,What do you think of the maglev train?,I,t is very dirty and causes acid rain.,N,uclear 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 paragraph,of 1a,.,a,b,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.,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.,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 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.,1b,Work alone,Read 1a again and fill out the following table.,Way to produce power,Advantage,Disadvantage,biogas,electric vehicle,maglev train,renewable,efficient,cheap,no pollution,quiet, quick,energry efficient,no pollution,I,t,will cause an increase in electricity needs,.,much more expensive than traditional trains,.,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.,( ),( ),( ),( ),图文搭配,a,b,d,c,Fill in the blanks using,but, and, though,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.,3,Written work,What good habits protect 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,.,Useful expressions,In many countries, people produce power from,coal or nuclear energy.,Its a pity that its too expensive to use in most of,China.,Work in groups,Think of more ways to produce power. And talk about,their advantages and disadvantages.,The method we have known,The new method,animal waste,burn garbage,water,sun,wind,magnets,Homework,1,、,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,法或者产品与大家交流。,3,、预习,Section D,。,Goodbye !,
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