1、Save our world,Module 12,外研版初中英语九年级,Unit 3 Language in use,pollution,Do you live a green life?,Save the earth and save us.,Teaching aims: 知识目标：To master some words and expressions about save our world: . factory, pollute, recycle, waste, enemy, crop, kill, oil, less, such as, hopeless 能力目标： 1.To und
2、erstand passages about pollution . 2. to learn to say why we need to save the world and how to be green.,Wordsand expressions,New words,factory n. 制造厂; 工厂,pollute v. 污染,recycle v. 回收利用, 再使用(废品),waste n. 废料; 废弃物,enemy n. 敌人; 仇人,crop n. 庄稼; 作物,kill v. 杀死; 弄死,oil n. 石油,kill v. 杀死; 弄死,oil n. 石油,Repeated
3、 use 重复使用，多次利用,Recycling 分类回收，循环再生,policy n. 政策; 方针,divide n. 分开; 分隔,plastic n. 塑料 adj. 塑料的,cloth n. 布; 布料,throw away 扔掉; 丢弃,ton n. 吨 tons of 许多, 很多,rubber n. 橡胶,rapid adj. 快速的; 迅速的,step n. 步骤; 措施,reuse v. 再次使用; 重复利用,reduce v. 减少; 减低; 缩小,recycling n. 回收利用,We should recycle rubbish because it can hel
4、p us protect the environment.,It is better to use china cups and bowls because they can be used many times.,Pollution from factories spreads over cities and villages.If the rivers are polluted,If the rivers are polluted, farmers cant use them to water their crops,What causes pollution ?,The cars on
5、the roads use so much oil and cause pollution,.Pollution from factories spreads over cities and villages.If the rivers are polluted, farmers cant use them to water their crops . 2. In some places, pollution from factories spreads over cities and villages 3.The cars on the roads use so much oil and c
6、ause pollution . .,What causes pollution ?,Watch and read,What can students do ?,1.every class collects waste which can be recycled or used again .Then the school sells the waste to help students. 2. Order food that you can finish. 3. Use less electricity at home. 4. Learn ways to recycle rubbish. 5
7、. Divide rubbish into different groups. 6. Use paper cups and paper bags.,7.Go to school on foot or by bike. 8. Do not throw away things made of glass, plastic and paper, but recycle them when possible. 9. Turn off lights when you do not need them. 10. Take a bag when you go shopping in stead of ask
8、ing for a plastic bag. 11. Use things for as long as possible.,1. We throw tons of rubbish away each year, and we have to make a change. ton n. 吨tons of 许多, 很多e.g 我们为今晚的聚会买了大量饮料。,. Weve bought tons of drinks for theparty tonight.,throw away 扔掉; 丢弃 e.g. When are you going to throw away those old maga
9、zines? 你打算什么时候扔掉那些旧杂志.他已经失去了一个良好的机会。,He has thrown away a good chance,2. Repeat these three words daily: reduce, reuse and recycle. repeat v. 重说; 重新做前缀“re-”, 意思是“再, 重复”e.g. I repeated after the teacher word by word. 我跟着老师一个字一个字地读。,reuse v. 再次使用; 重复利用 e.g. She often reuses old envelopes. 她经常重复使用旧信封。
10、这些瓶子可重复使用达20次。,The bottles can be reused up to 20 times.,3. Although it takes energy to change things into something else, it is better than throwing things away or burning them.change into 把变成e.g. You cant change iron into gold. 你无法把铁变成金子。,4. We cannot hope for rapid change, but lets take these sim
11、ple steps today take steps 采取措施 e.g.我们需要采取一些措施了减少污 染。,We need to take some steps to reduce pollution,5. Its no use talking about things we cant do. Its no use doing sth. 做某事没有用处e.g. Its no use complaining. 抱怨没有用处。Listen, George, . 听着, 乔治, 活在过去是没有用的。,its no use living in the past.,合成法将两个或两个以上独立且语义不同的
12、单词合在一起构成新词的方法叫做合成法。合成法是一种比较灵活的构词方法，可以合成名词、形容词、副词、代词、动词等。例如：afternoon, sportsman, blackboard, sportsperson, newspaper,构词法,2. 派生法通过在词根前面加前缀或在词根后面加后缀构成一个新词的方法叫作派生法。要通过派生法理解和记忆单词, 我们需要掌握常见的前缀和后缀及派生规律。,(1) 常见前缀,(3) 派生规律 由一个词根加上相应的词缀可以派生出名词、形容词、副词等，掌握派生规律对扩充词汇有很大帮助。例如：,由 interest 可以派生出：uninteresting inter
13、est interesting interestinglyinterested uninterested,由 help 可以派生出：helpless helplessly help helpful helpfully 由 able 可以派生出：enable able unableabilitydisable,3. 转化法英语构词法中把一种词性转化为另一种词性而词形不变的方法称作转化法。常见的转化有： (1) 动词转化为名词 Lets talk about it more. 咱们再谈谈这件事吧。 I think wed better finish the talk now. 我想我们最好现在结束
14、谈话。,(2) 名词转化为动词She gave me a cup of water. 她给了我一杯水。You should water the flowers twice a day. 你应该每天给这些花浇两次水。,Complete the sentences with the words in the box.,hopeful impossible reuse unhealthy wasteful,Polluted water is _. 2. It is _ to throw so much food away.,unhealthy,wasteful,Exercises,3. If you
15、 look after things well, you may _ some of them later. 4. It is _ to clean up the whole river in such a short time. 5. If we pay attention to pollution now, the future will be _.,reuse,impossible,hopeful,Complete the sentences with the correct form of the words in Activity 3.,She was hopeful that he
16、r new job would make her more successful.,The factory _ the river, and the fish died. 2. We often walk in the countryside. It is a(n) _ activity for us.,polluted,usual,3. Do not use so much water. It is very _. 4. To keep the flowers growing, you need to _ them once a day.,wasteful,water,Complete th
17、e conversation with the correct form of the expressions in the box.,be good for throw away turn off worry about,Mike: I hear you are off to the Caribbean for a holiday! Lucky you! But arent you _ the pollution that such long plane journey may cause for the environment? Ken: I know, but what can I do
18、 about it? Ive already tried my best to protect the environment.,worried about,I recycle. I dont _ things if I dont want them any more. I _ the lights when I leave a room. Dont tell me I shouldnt travel by plane any more!,throw away,turn off,Ken: Good! So I can enjoy my holiday, and when I come back
19、, Ill plant some trees! Mike: Thats the idea! Maybe we can all join in and start a small forest!,Listen and check () the true sentences. 1. It is OK to throw used things away. Looking after them takes a lot of time. 2. Do not throw away things made of glass, plastic and paper, but recycle them when
20、possible. 3. Take a bag when you go shopping.,Listening,reduce pollution,waste electricity,Walk or cycle,pollution,Module task,Work in groups,Discussing what you can do about pollution,Discuss your subject.,Discussion,Take turns to say what you think about the problem and what can be done.,Bye-bye!,Thank you,
