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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 Saving the EarthTopic 3,What can we do at home to protect the environment,?,Section C,How can we become a greener person?,1.,首先,你应该在离开房间的时候关电。,First,you ought to,shut,off the,electricity,when you leave a room.,2.,第二,如果你短途旅行的话,最好是走路或者骑车而不是坐公交车或者打的。,Second,youd better walk or ride,a bike,instead of taking a bus or a taxi if you travel a short distance.,3.,第三,当你去逛街的时候,带一个布包。,Third,take a cloth bag when you go shopping.,4.,说起来容易,做起来难。,Easier said than done.,5.,事实胜于雄辩。,Actions speak louder than words.,_ _ is harmful to the earth.,Acid rain,Some countries use _ _ to produce power.,nuclear,energy,_ is a kind of clear energy.,Biogas,There are all kinds of _ _.,electric,vehicles,The _ _ is faster than a common train.,maglev train,New words,acid rain,nuclear,biogas,technology,straw,renewable,disadvantage,process,require,electric,best-known,maglev train,German,1.,酸雨,2.,原子核的,原子能的,3.,沼气,4.,技术,5.,禾秆,稻草,6.,可更新的,可再生的,7.,不利因素;障碍;不便之处,8.n.,步骤,过程,v.,加工,处理,9.,需要,要求,10.,用电的;电动的,11.,最知名的,12.,磁悬浮列车,13.,德国人;德语,1.per,2.,wheel,3.efficient,4.,guide,5.path,6.,steel,7.wave,8.,deep,9.source,10.,run out,11.,worldwide,12.sunlight,13.steam,1.,每,每一,2.,轮子,车轮,3.,效率高的,有能力的,4.,向导,导游;指南,手册,5.,道路,途径,6.,钢,钢铁,7.,挥手,招手,海报,8.,深的,厚的,9.,来源,出处;起源,源头,10.,用完,耗尽,11.,全世界,世界各地,12.,阳光,日光,13.,水蒸气,蒸汽;水汽,1a Read and understand.,Look at the pictures.Do you know what they are?Choose the right picture for each paragraph.,paragraph 2,paragraph 3,Paragraph 4,1b Read 1a and match the words with the pictures on Page 48.,A,.,acid rain,B,.,nuclear,energy,C,.biogas,A,C,B,adj.,原子核的,,原子能的,酸雨,Read Paragraph 1 again,and then mark True(T)or False(F).,()Its good that people produce power from coal.,()Nuclear power is dangerous.So we cant use it.,()To solve the energy problem,people all over the world are looking for new ways to produce power.,T,F,T,Paragraph 1,Key points,发电,引起酸雨,用核能来发电,produce power,cause acid rain,use nuclear energy to produce power,1.I used _(leave)rubbish here and there.,2.We are used _(do)a lot of,homework.,3.The robots are used _(do),dangerous work instead of us.,4.We use the computer _(study).,to leave,to doing,to do,to study,1.中国是世界上第一批使用沼气技术的国家之一。,China is,one of,the first,countries,in the world to use biogas technology.,one of+N 复数形式,Paragraph 2,2.Its key disadvantage is that the,process,requires,a long time(up to 30 days)and the cost is high.,它最大的缺陷是生产过程需要很长时间(长达30天)和成本高。,require v.,需要,需求,require,有两种用法:,*,require(doing)sth.,表示主语“该,.,了”。,如:,The floor requires washing.,地板该洗了。,*,be required to do sth.,表示主语必须(被要求),.,如,:Students are required to attend classes.,学生必须按规定上课。,Paragraph 3,Electric vehicles were _ in the 1990s.On April 11,2010,a new kind of electric vehicle _“Yezi”was shown in the 2010 Shanghai World Expo.It produces _ from the sun,the wind and CO,2,.It can not only protect the environment but also _ energy.Its too small to hold many people,but _ models will be developed in the near future.,developed,named,electricity,save,larger,Key points,被研制,太.而不能,容纳很多人,在不久的将来,be developed,too.to,hold many people,in the near future,Paragraph 4,1.,去,30,公里以外的飞机场只需花费人们七分钟的时间。,It takes people just 7 minutes to go to the airport 30 km away.,2.,火车最高时速能够达到每小时,431,公里。,The train can reach a top speed of 431 km per hour.,German,n.,德国人,德语,Germany n.,德国,pl.,Germans,wheel n.,轮,车轮,轮子,E.g.They are Germans,and they are from Germany.,language points,1c Read 1a again and complete the table.,Item,Advantage,Disadvantage,biogas,electric vehicle,maglev train,renewable,long process and high cost for its building,save energy,no pollution,too small to hold many people,quiet,quick,energy-efficient,no pollution,much more expensive than traditional steel railways,2a Read the passage below and match the pictures with the sentences.Then discuss in detail the use of one energy source.,The sun,wind,waves and heat from,deep,in the earth are energy,sources,.They will never,run out,so they are called,renewable,sources.In 2011,about 16%of energy used,worldwide,came from renewable sources.The use of it is increasing rapidly each year.,deep,adj.,深的,厚的,adv.,深深地,在深处,depth,run out,用完,耗尽,E.g.He has run out of food,so his children are hungry.,2a Read the passage below and match the pictures with the sentences.Then discuss in detail the use of one energy source.,Wind can produce electricity in many places.,People use,sunlight,to produce electricity.,Sea waves are used for producing electricity.,People use hot water or,steam,from deep in the earth to produce electricity and heat for factories,schools and homes.,阳光,日光,水蒸汽,蒸汽,水汽,2b Take notes on your discussion and write a passage with them.,You may begin like this:,Sunlight can produce a lot of energy.People began to use the energy from the sunlight in different ways many years ago,Sunlight can produce a lot of energy.People began to use the energy from the sunlight in different ways many years ago.We can use it to warm the house in the winter,to heat the water for baths,and to produce electricity.Whats m
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