Unit 6 Starting out （ppt课件）-2022新外研版（2019）《高中英语》必修第二册.pptx

1、 To think about some environmental problems we are facing.To express your ideas on how these environmental problems arise by watching a video and looking at some pictures.To discuss with classmates on how to protect the earth.List the top 10 environmental problems.Climate Change.（气候变化。）（气候变化。）Energy

2、.（能源。）（能源。）Water.（水。）（水。）Biodiversity and Land Use.（生物多样性和土地使用。）（生物多样性和土地使用。）Chemicals,Toxics and Heavy Metals.(化学特制、有毒物化学特制、有毒物质及重金属质及重金属)Air Pollution.（空气污染。）（空气污染。）Waste Management.（废物管理。）（废物管理。）Ozone Layer Depletion.（臭氧层损耗。）（臭氧层损耗。）Oceans and fisheries.（海洋和渔业。）（海洋和渔业。）Deforestation.（采伐森林。）（采伐森林。

3、）When it comes to the earth,whats your first impression?Have you noticed some serious problems the earth is suffering from?How much do you know about the serious situation humans faces?Watch the video and answer the questions.2.What does the video want to tell us?Severe environmental problems we are

4、 facing nowadays make our future uncertain.Its time for everyone to take action now and make our planet a greener and safer place for our future generations.1.Which of the facts in the video do you find most alarming?(Any reasonable idea is accepted.)Listen and complete the missing numbers._ square

5、kilometers of forest disappear every year around _ trees are cut down each day just to make toilet paper each day,around _ to _ species of plants and animals become extinct-nearly _ times the natural rate of extinction130,00025,0001502001,000 over _ animals are killed by ocean pollution each year _

6、people dont have clean drinking water a plastic bottle can take _ years to break down the ice caps are more than _ thinner than they were _ years ago1 million1 billion45050%40Discuss what major environmental problems we are facing currently.1.Pollution:water pollution,air pollution,soil pollution,et

7、c.2.Global warming.3.Climate change.4.Overpopulation.5.Waste disposal.6.Loss of biodiversity.7.Deforestation.water pollutionair pollutionplastic pollutionglobal warmingwaste disposalsoil pollutionoverpopulationdeforestationLook at the cartoons on page 61 and answer the questions.1.What environmental

8、 problem does each cartoon refer to?Water pollution;deforestation;air pollution;global warming2.What are the causes of these problems?Use following expressions to help you:ignore,cause/lead to/result in,peoples awareness of environmental protection,fossil fuel burning.3.What do you think is the most

9、 serious environmental problem we face today?What should be done to help solve it?Use following expressions to help you:invest,recycle,carpooling,classification of waste,green/clean energy.Choose one of the most serious environmental problems and discuss in groups to analyze the causes and think abo

10、ut possible solutions.air pollutionCause:the burning of fossil fuels,agricultural activities,exhaust from factories and industries,mining operations,indoor air pollutionPossible solutions:taking public transportation;conserving energy;understanding the concept of Reduce,Reuse and Recycle;emphasis on

11、 clean energy resources;using energy efficient devices;.How about plastic pollution?Packaging wastePlastic has revolutionized the way we package goods and safely consume food.But packaging accounts for more than 35%of plastic worldwide.Southeast Asia has seen an explosion of plastic packaging waste,

12、which increasing the risk of polluting rivers and seas.Most plastic packaging is single use.Recycling rates are extremely low-less than 9%globally.If nothing changes,26 billion tons of plastics will be produced over the next 30 years.Solutions:Controls on industry for plastic packaging production.In

13、ventions and investment in biodegradable(生物可降解的生物可降解的)or reusable packaging.Government targets to restrict plastic packaging and promote recycling.Whats your solution?If we do not change our ways,we are at risk of ruining our planet and destroying many more plants and animals.All of these things will be gone.And we will be gone,too.Time is running out.Our planet needs our help.Its up to us to decide together what happens next.Make a survey about water pollution around you,then write a short report in 70 words,including existing problems,causes,damage,possible solutions.