Unit9 Saving the earth 人教版 课件VIP免费

When and what are World Enviroment Day?June 5 World Environment Day- the world warnpeople toconcern for the increasing environmental problems. 世界环境What about World Water Day and World Earth Day?March 22 World Water Day - The decision to celebrate this day has been taken recently as rinking water sources are fast depleting.April 22 is Earth Day – a time to teach about the value of our environment and how to preserve our planet.Water pollution Trash/garbageAir pollutionDesforestationDesertificationStarvationQuestions2.What is the biggest problem facing the earth? Why do you think so?Water?Earth ?Air ?Starvaion?Other problem?1.What cause the problem?Trees be cut down—nothing to hold---soil wahsed awayTrees be cut down—nothing to hold---soil wahsed awaySmoke from factories , power stations and cars---water be polluted3.What can we do to solve the problem?(1).we can develop techology to control the pollution of air and water. (2).Our government should spend more money in controling desertificationby plants more Trees(3). ………Discussion(group work)What we should do to protect our enviroment in future?Plant treesRide bicycleSave electricityRecycle Save water What should we not do to damage our enviroment in future?●Don’t use one-off, opsticks ,lunch-boxes and cups.●Don’t use paper tissue when you sneeze,use handkerchief instead.●don’t throw rubbish at will ●Don’t waste electricity.●Don’t waste water ●Don’t destroy trees Homework(class work)Whether you notice or not,the Xinjiang River through our county is very dirty,there are a lot of waste on the river.please make a poster about our river and post it in the school column to tell people to protect our river.