2020-2021学年高中英语 Unit 6 Earth first Period 5学案外研版必修第二册

1、2020-2021学年高中英语 unit 6 earth first period 5学案外研版必修第二册2020-2021学年高中英语 unit 6 earth first period 5学案外研版必修第二册年级：姓名：unit 6 earth firstperiod 5presenting ideas (revision and writing)学案设计学习目标1.review the words related to dealing with environmental problems.2.present your ideas about what you can do to dea

2、l with an environmental problem.3.know how to write a persuasive letter.4.raise the awareness that it is everyones duty to protect the environment.课堂探究step 1:review some expressions related to environmental problemstranslate the following sentences:1.其他人开始肆无忌惮地捕杀鲨鱼。2.1975年后,美国大型鲨鱼的数量迅速下降,这一趋势很快蔓延到全球

3、。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.种树能大大地减少温室效应。6.通过运用可重复利用的产品减少浪费。7.努力减少碳的足迹且使用可再生的能源。8.你用的能量越少,二氧化碳释放的就越少。9.政府正在采取措施尽可能多地减少雾霾。10.工厂必须遵守它们用什么化学药品的规则。11.在一些城市,人们开车进入中心需要交费。step 2:present your ideasprepare a talk according to the following commands and guidance.whats the en

4、vironmental problem you will mention? what causes it?how to solve it?useful expressions:lead to/bring out/contribute tobe concerned aboutwould like to suggestwe hope that.one of the reasons is that.in order to improve the situation,we should.replace.with.as far as i am concernedreusable bagson foot/

5、by bikelimited resourcesoffer an alternative to.make joint effortraise peoples awareness ofappeal to sb.to do sth.step 3:write a persuasive lettertask 1:read the passage on page 71 and answer the following questions.1.what is the purpose of the letter?2.what is the existing problem?3.what are the pr

6、oposed actions from class 8?task 2:work in groups.discuss another environmental issue about how to write a persuasive letter and make notes.problem:cause(s):solution(s):task 3:think about another environmental issue and ask students to join in the campaign related to the issue (for example,the no bo

7、ttled water campaign) and write a persuasive letter with the help of these expressions(100-120 words).the letter should include the following 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.w

8、e hope that you will consider.one of the reasons for this is.in order to improve the situation,we should.课后练习1.polish the summary and check the grammar and spelling mistakes in groups.2.transform your speech into a short passage(within 100 words).参考答案课堂探究step 1:1.other people started fishing for sha

9、rks,killing as many as they could.2.after 1975,the number of large sharks around america fell quickly,and soon fell around the world.3.today,as we learn more about sharks,more people than ever want to protect them from extinction.4.in recent years,we have seen large areas of wetland that were damage

10、d by human activity.5.planting trees can help a lot in reducing the greenhouse effect.6.reduce waste by choosing reusable products.7.try to reduce your carbon footprint and use renewable energy.8.the less energy you use,the less carbon dioxide is released.9.the government is taking measures to reduc

11、e smog as much as possible.10.factories must follow rules about what chemicals they use.11.in some cities,people have to pay to drive in the centre.step 3:1.to call on everyone to take part in the clear your plate campaign.2.over 30% of the worlds food is wasted,while many people in poor areas do no

12、t have enough to eat.3.do not order more than you need in the school canteen;order less and take leftover food home when dining in restaurants;call on family members and friends to take part in the campaign.task 3:dear friends,we are writing this letter to raise your awareness of the need to protect

13、 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 year.the plast

14、ic 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 purchase a plastic bottled beverage,r