仁爱九年级上UnitTopicSectionC.pptx

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1、会计学1仁爱九年级上仁爱九年级上UnitTopicSectionC1._ 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:第1页/共25

2、页What new ways have been invented to produce power?electric vehiclebiogas technology第2页/共25页What new ways have been invented to produce power?maglev trainwater battery第3页/共25页Look up these words in a dictionary.power 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

3、；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；有能力的有能力的第4页/共25页Wind is used for producing electricity in many places.Look at the following pictures and guess the meaningof the underlined word.第5页/共25页More and more people are interested in electric cars.第6页/共25页The maglev train in Shanghai uses magnets.The

4、 magnets push the train forward.第7页/共25页people produce power from coal,but it is very dirty and causes acid rain.第8页/共25页Nuclear power is clean but it is very dangerous.第9页/共25页1aChoose the right picture for each paragraph.第10页/共25页 In many countries,people produce power from coal,but it is very dir

5、ty 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.abc第11页/共25页c_China is one of the first countries in the world to use bi

6、ogas technology.Farmers recycle straw,grass and animal waste to make biogas.This renewable energy is used in peoples everyday life.abcChoose the right picture for each paragraph.第12页/共25页_ Electric vehicles were developed in the 1990s.Now there are electric vehicles in many countries.They are very e

7、fficient 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.aabc第13页/共25页_ 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 an

8、d 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.babc第14页/共25页1.Why isnt coal a goo

9、d 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.Answer th

10、e following questions according to 1a.第15页/共25页Read 1a again and fill out the following table.Way to produce powerAdvantageDisadvantagebiogaselectric vehiclemaglev trainrenewable efficient,cheap,no pollution quiet,quick,energy efficient,no pollution It will cause an increase in electricity needs.muc

11、h more expensive than traditional trains.1b第16页/共25页power stations第17页/共25页the movement of water第18页/共25页the wind power第19页/共25页solar energy第20页/共25页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

12、 produce electricity.c.Wind is used for producing electricity in many places.d.People produce electricity from the sun.(b )(c )(d )(a )2a第21页/共25页What habits are good for 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.3第22页/共25页Homework:1.Copy the words and phrases.抄写单词和词组。抄写单词和词组。2.Study Case:导学案导学案Unit 2 Topic 3 Section C3.Recite 1a Passage.背诵背诵1a课文。课文。第23页/共25页第24页/共25页