1、Unit 2 Topic 3Would 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 theenvironment? What activities shouldnt we do to protect theenvironment?,Look up these words in a dictionary.,power,nuclear,renewable,electric
2、,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 mean
3、ing of the underlined word.,The maglev train in Shanghai uses magnets. 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
4、 the meaning of the underlined words.,Nuclear power is clean but it is very dangerous.,Look at the following pictures and guess the meaningof 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 thin
5、k 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 paragraph of 1a.,a,b,c,China is one of the first countri
6、es 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 litt
7、le 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
8、 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 t
9、able.,renewable,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 3 000 power stations in the world that produce electricity by burning garbage to heat water
10、. 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. K
11、angkang 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 ofproducing power.,3,Written work,What good habits protect the environment? List as many as you
12、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 expressionsIn 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.,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 !,
