Unit 2 Saving the Earth,Unit 2 Topic 1,Pollution is harmfulto peoples health.,Section A,In the past,At present,The Changes of the World,Free talk: The Changes of the World,pollution problems,the development of the society,Our world has changed a lot.,Pollution often comes along with the development of industry.,Lets have a close look at the city.,pollution,air pollution,water pollution,litter,noise pollution,嘀!,嘀!,light pollution,soil pollution,Listen to 1a and then answer the questions.,1.Where are the children planning to go for a picnic?What is it like there?,They are planning to go to West Hill for a picnic.,Its a beautiful place with lots of flowers and grass. The air is fresh, the water is clean, and you can see bees and butterflies dancing.,2. Has everything changed? What is it like now? What has happened there?,Yes, it has.,All the flowers, grass and fish have gone. The water is dirty and it smells terrible.,Because there are several chemical factories pouring waste water into the factory.,Find out the following phrases.,对人们的健康有害 计划一次野炊 看见蜜蜂和蝴蝶在飞舞 我的天啊 花草都不见了。 几座化工厂 往小溪排放污水 一个有许多花草的美丽地方,be harmful to peoples health,plan a picnic,see bees and butterflies dancing,my goodness,The flowers and grass have gone.,several chemical factories,pour waste water into the stream,a beautiful place with lots of flowers and grass,(Kangkang, Jane, Maria and Michael are planning a picnic.) J&Ma: Kangkang, where shall we go? K: What about the West Hill? Ive been there before. Its a beautiful place with lots of flowers and grass. The air isfresh and the water is clean, and you will see bees and butterflies dancing. Mi: Sounds great! Lets go there.,1a,(Two days later, they come to the West Hill.) K: Oh, my goodness! The flowers and grass have gone! The water is so dirty. It smells terrible. What has happened here? Ma: Look, there are several chemical factories pouring waste water into the stream. K: Everything has changed. Mi: Do you still want to have a picnic here? J: Of course not.,1a,pourinto,waste: adj. 废弃的，无用的,waste: 1) adj. 废弃的，丢弃的，无用的2) n. 浪费a waste of，废弃物，废料 un.3) v. 浪费,Language points,1) adj. 2) n. 3) v.,污水,waste water,他的等待只是浪费时间。,别浪费水资源!,His waiting is just a waste of time.,Dont waste water!,Report,What has happened to West Hill?,West Hill used to be a beautiful place,Its a beautiful place with flowers and grass. The air is fresh, the water is clean and you can see bees and butterflies dancing.,All the flowers,grass and fishhave gone. Thewater is dirty and it smells terrible,Several chemical factories are pouring waste water into the stream.,Its generally believed that pollution does great harm to animals. Listen and number the pictures.,fishes,giraffes,pandas,whales,some deer,birds,6,2 Work alone,4,1,2,3,5,be harmful to,People use chemicals too much in their fields, so _causes unhealthy food. People pour waste water into rivers and lakes, so _is almost everywhere in China. _makes people sick. It causes breathing problems and even cancer. In some cities theres too much _caused by many cars. The government has done something useful to stop it. _is harmful to birds. _influences our environment.,soil pollution,water pollution,Air pollution,noise pollution,Light pollution,Litter,3b,cn. 化学制品 chemical: adj. 化学上的,v. breathen. breath,influence: n. / v.,2. influence: n. 影响力；权利，势力 have an influence on sth.v. 影响 influence sb./sth.,在他们的影响下，他已经变成了一个好学生。,他利用父母的影响力获得了那份工作。,这本书深深的影响了我。,Under the influence of them, he has been a good student.,He used his parents influence to get the job .,This book influences me deeply.,Language points,1. 呼吸： v. breathe-breathing n. breath,吸入/ 呼出,breathe in / out,他终于松了一口气。,屏住呼吸,He can breathe easily at last.,keep ones breath,深呼吸,take a deep breath,一口气喝完一杯水,drink up a glass of water in one breath,喘不过气来,使某人大为惊讶,out of breath,take ones breath away,1. Martin said to Bob, “You must come for a visit. Then you can see New York for yourself.”2. Helen said to Bob, “You have been to New York for a long time.”,把直接引语改为间接引语。,Martin said to Bob that he must come for a visit. Then he could see New York for himself.”,Helen said to Bob that he had been to New York for a long time.,3. Jane said, “ I am reading a newspaper from Canada.”4. Maria asked, “ Are there homeless people in Canada?”5. Maria asked, “ Can the homeless people get good medical treatment?”,Jane said that she was reading a newspaper from Canada.Maria asked if there were homeless people in Canada.Maria asked if homeless people could get good medical treatment.,6. Jane asked Bob, “ How do you like living there?”7. Maria asked, “ What are you reading, Jane?”,Jane asked Bob how he liked living there.,Maria asked Jane what she was reading.,8. The teacher said to Li Ping, “ Open the window.”,The teacher asked Li Ping to open the window.,9. The policeman said to us,“ Dont play on the street.”,The policeman told us not to play on the street.,