Unit 6 Period 1&2 Starting out+vocabulary+listening ppt课件-2022高中英语新外研版必修第二册.pptx

1、Unit 6 Earth firstPeriod 1 Starting out&Vocabulary&ListeningActivity 1 Watch the video and write down the numbers mentioned.Complete the missing numbers._ square kilometers of forest disappear every year around _ trees are cut down each day just to make toilet paper each day,around _ to _ species of

2、 plants and animals become extinct-nearly _ times the natural rate of extinction130,00025,0001502001,000 over _ animals are killed by ocean pollution each year _ 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

3、_ years ago1 million1 billion45050%40Activity 2 What environmental problem does each cartoon refer to?water pollutiondeforestationglobal warmingair pollutionglobal warmingActivity 3 Dealing with global warmingShare what you know about these expressions.water conservationrenewable energyLED bulbcarbo

4、n footprintgreenhouse effectreusable water bottleComplete the brochure with the expressions in Activity 4.Reduce waste by choosing reusable products-get a(n)1._,for example.Try to reduce your 2._.Walk or ride a bike instead of taking a car.Use 3._ such as solar energy and wind power.reusable water b

5、ottlecarbon footprintrenewable energy The less energy you use,the less carbon dioxide is released.Replacing a regular light bulb with a(n)4._ is a great start.5._ is important because clean water is a limited resource.Also,we use a lot of energy to process clean water.Planting trees can help a lot i

6、n reducing the 6._ because trees absorb the carbon dioxide in the air.LED bulbWater conservationgreenhouse effectWhat is the problem in the picture?smogn.雾雾Smog comes from the words “smoke”and“fog”,and it is used to describe the air pollution in cities caused mainly by traffic and factories.Smog can

7、 be dangerous because it causes severe breathing problems and infections.Did you know?n.烟雾，雾霾烟雾，雾霾adj.(问题、伤问题、伤势、传染病势、传染病)很严重的很严重的n.感染，传染病感染，传染病Listen to the lecture and choose the topics that are covered.1.What the word“smog”means.2.When the word“smog”appeared.3.What caused smog in the past.4.What

8、causes smog now.5.The effects of smog on the environment.6.How governments try to reduce smog.7.What will happen if we dont reduce smog.Activity 4Listen again and complete the slides.Smog in the past Term created in:_ Big problem in London:_ in December 1952 Causes of the problem:burning too much co

9、al and _1900sThe Great Smogno windActivity 5Smog in the present Causes of the problem:_ Measures:rules about using _ in factories and _ _ in the city centre.chemicals coming from trafficchemicals requirements of paying todriveWhy do we have to protect the earth?What measures should we take to protec

10、t the earth?听力原文听力原文 Lecturer:Good evening,everyone,and thank you for coming to todays talk.Im Dr Brown and Im going to talk about air pollution in cities-what we all know as“smog”.Please feel free to stop me if you have any questions.So,first of all,a bit of history.The term“smog”was first used in

11、the 1800s in cities that had problems with smoke and fog.Student A:Sorry for interrupting,but I believe it was in the 1900s.Lecturer:Sorry,I made a mistake.You areright.It was in the 1900s.Thank you.Londonwas one of the cities where smog caused bigproblems.In December 1952,it suffered from“The Great

12、 Smog”.It was a very cold winter,soa lot of coal was burned at home and in thefactories.The problem was that there was nowind,so thick smog covered the city.Nowadays打扰，打断打扰，打断Student B:Excuse me,but can I just ask-did thesmog cause any deaths?Lecturer:Im afraid so.According to research,about 4,000 p

13、eople are known to have died as aresult of the smog,but that number could bemuch higher.It was terrible!Nowadays,smogstill exists,but is produced by chemicals comingfrom traffic and factories.However,governmentsare taking measures to reduce smog as much aspossible.Now,lets look at what smog does to

14、ourhealth采取措施采取措施Student A:If I could just stop you again Canyou give us examples of these measures?Lecturer:Well,for example,factories mustfollow rules about what chemicals they use.Insome cities,when theres smog,people have topay to drive in the centre.Now,lets move on tothe impact of smog on our healthPlease preview the passage in P62 and do the exercises in P64.