1、Unit 4 Global warming Using Language,1.Grasp the usage of such important new words andexpressions as average/advocate/casual/circumstance /on the whole/on behalf of /put up with. 2.Master the listening skills. 3.Learn some writing skills.,Learning aims,What can we do about global warming ?,Leading-i
2、n,Skimming,Skim the letters and find who the writers are and what their purpose of writing the letters is.,The first letter is written by a student who is asking for suggestions for his project global warming. The second letter is written by an editor of Earth Care magazine.He offers the student som
3、esuggestions on what to do about global warming.,Reading,Scanning,List Earth Cares suggestions and in groups discuss whether you think you can carry out each suggestion.,Yes,Save energy,Yes,Save energy,Yes,Save energy,Yes,Save energy,If youre cold, put on more clothes instead of turning up the heat.
4、,Motor vehicles use a lot of energyso walk or ride a bike if you can.,Recycle cans, bottles, plastic bags and newspapers and buy things made from recycled materials.,Yes,Save energy,Yes,Plants absorb carbon dioxide from the air.,Plant more trees.,Get your parents or friends to buy products that are
5、made to save energy.,Yes,Together, individuals can make a difference.,Talk with your family and friends about global warming and tell them what youve learned.,What can we do about global warming? Turn a(n) _ off when youre not using it. Put on more clothes instead of turning up the _ . Walk or _ ins
6、tead of taking motor vehicles. _ cans, bottles, plastic bags and newspapers.,electrical appliance,heat,ride a bike,Recycle,Detailed reading,1. Listen to Part 1 , and decide which statements Professor Keeling does NOT agree with. (1) We should stop depending on fossil fuels for our energy. (2) 90% of
7、 our energy comes from fossil fuels. (3) We can replace fossil fuels with cleaner sources of energy. (4) Nuclear power is a good source of energy.,produce carbon dioxide cheap and concentrated form of energy,2. Listen to Part 1 again and tick the energy sources that are mentioned. Complete the notes
8、 on them.,clean not very practical with present technology,does not produce carbon dioxide dangerous,clean not practical: needs huge areas of land to provide enough energy,First we must find ways to use fossil fuels that do not put carbon dioxide into the air. Second we must produce products that ar
9、e economical with energy. Third we must ask people to cut down the energy they use.,3. Listen to Part 2 and then list three things we can do to save energy.,LI BIN: What about _? They dont cut down on their use of _. KEELING: No, they dont. However, that is a _ we must work on as a _ community. That
10、 means _ and _countries will have to work together. LI BIN: But its not the _ countries that put most of the carbon_ into the air. The developed countries are really the ones to _.,energy,factories,problem,global,developed,developing,developing,dioxide,blame,4. Listen to Part 2 again and fill in the
11、 blanks.,Language Points on behalf of 代表；作为的代言人 I am doing a project on behalf of my school about global warming. 我正代表学校做一个关于全球变暖的课题研究。I shall accept the prize on his behalf. 我将代表他接受那份奖金。,on behalf of sb.=on sb.s behalf,2. advocate vt.拥护；提倡；主张 However, I still think people should advocate improvemen
12、ts in the way we use energy today. 然而，我仍认为人们应该提倡改善我们当今使用能源的方式。 I dont advocate your going there alone. 我不主张你独自去那里。 They advocated that we should establish a day-care center. 他们主张我们建立日间托儿所。,【归纳拓展】 advocate (doing) sth. 提倡（做）某事 advocate that-clause 提倡(从句谓语用should+ 动词原形，should可省略） 【即学即练】 完成句子。 (1) The
13、report advocated that all buildings _with smoke alarm. (fit) 报告主张所有的建筑物都应安装烟雾报警器。 (2) Many experts advocate _. (reward) 很多专家主张对小孩的良好表现加以奖励。,should be fitted,rewarding children for their good behaviors,3. put up with 忍受；容忍,We do not have to put up with pollution. 我们不必去忍受污染。Noise is coming to the poin
14、t where we cant put up with it. 噪音快到我们无法忍受的地步。 We cant change the bad weather, so we must put up with it. 我们改变不了这种坏天气, 所以对它只好忍受。,Answer key for Exercise 1: 1 . The main point of view to be circled: All sorts of items become litter, but two of the most common and most dangerous are cigarette butts an
15、d plastic bags.,2. The evidence about cigarette butts Tom gives to support his argument to be underlined: Over 1,600 billion cigarettes are smoked each year in China the toxic chemicals add up to a large amount. 3. The evidence about plastic bags Tom gives to support his argument to be boxed: They a
16、re made from to kill another animal.,4 .Toms solutions: (1) Put cigarette butts in the rubbish bin. (2) Dont let plastic bags become litter. (3) Use fewer plastic bags and recycle them. (4) Dont smoke. (5) Dont use plastic bags at all.,Writing Task (P67) Writing tips: Step 1: Write out the thesis st
17、atement. (point of view) Step 2: Write out the topic sentence of the first body paragraph. Step 3: Give the supporting points and details about the first subtopic.,Step 4: Write out the topic sentence of the second body paragraph. Step 5: Give the supporting points and details about the second subto
18、pic. (more body paragraphs . ),Now choose a topic from the below list that you feel strongly about. Make notes on your topic using headings similar to those in the table above. Use Toms essay as a model to write your own. A sample list of environment topics:air pollution, noise, soil erosion, water pollution, litter classification, desertification, make green by planting trees,Class exercises,Homework,Use Toms essay as a model to write your own.,Constant dripping wears away the stone. 水滴石穿。,
