1、Period 5 presenting ideas（revision and writing)Learning objective1.Review the useful expressions about the environmental problems2.present my ideas about what I can to deal with an environmental problem.3.know how to write a persuasive letter.4.Raise the awareness that it is everyones duty to protec
2、t the environment.Step I:Useful expressions1.其他人开始肆无忌惮地捕杀鲨鱼。2.1975年后，大型鲨鱼的数量开始下降，这一趋势很快蔓延到全球。3.今天，随着我们越多地了解鲨鱼，更多的人比以往想要保护它们以防灭绝。4.近年来，我们看到大片的湿地被人类活动所破坏。5.保护和修复自然环境6.采纳新的可持续的方法.7.种树能大大地减少温室效应Step I:Useful expressions8.通过运用可利用的产品减少浪费。9.努力碳的足印且用再次利用的能源10.你用的能量越少，更少的二氧化碳释放。11.关于4000人已经死去由于雾12.交通和工厂产生的化学
3、药品13.政府正在采取措施尽可能多地减少雾霾。14.工厂必须遵守它们用什么化学药品的规则。15.在一些城市，人们开车进入中心需要交费。Step II:Presenting your ideasPrepare a talk according to the following commands and guidance.Whats the environmental problem you will mention?What causes it?How to solve it?Step IV:Writing a persuasive letterTask 1:Read the passage o
4、n p71and answer the following questions.1.What is the purpose of the letter?2.What is the existing problem?3.What are the proposed actions from Class 8?To call on everyone to take part in the Clear Your Plate campaign.Over 30%of the worlds food is wasted,while many people in poor areas do not have e
5、nough to eat.Do not order more than you need in the school canteen;order less and take leftover food home when doing in restaurants;call on family members and friends to take part in the campaign.Task 2:Work in groups.Discuss another environmental issue about which to write a persuasive letter and m
6、ake notes.Problem:Causes:Solutions:Task 3:Think about another environmental issue and ask students to join in the campaign related to the issue(for example,the No Bottled Water campaign)and write a persuasive letter with the help of these expressions(100-120 words).The letter should include the foll
7、owing aspects:Problem:Cause(s):Solution(s):Useful expressions:We are writing this letter to raise your awareness of.We are concerned that.We would like to suggest.We hope that you will consider.One of the reasons for this is.范文：Dear Friends,We are writing this letter to raise your awareness of the n
8、eed to protect our planet.You can help simply by participating in the No Bottled Water campaign.People tend to think bottled water is cleaner and more convenient.However,they may not know that according to scientific research,millions of tons of plastic are used worldwide to make water bottles each
9、year.The plastic can take hundreds of years to break down.If you are worried about the effects of bottled water on the Earth,we would like to suggest you take the following steps:1.Carry your water in a sustainable,reusable bottle.In this way,you dont need to buy bottled water.2.If you have to purch
10、ase a plastic bottled beverage,recycle the bottle after use,3.Ask your family members and friends to take part in this campaign.Everyone is responsible for making our planet cleaner and better by doing what we can.Let start NOW.With best wishes,Class 29Homework:Polish the summary and check the grammar and spelling mistakes in groups.
