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1、Unit 3 Food and cultureEarth provides enough to satisfy every mans needs,but not every mans greed.-Mohandas K.GandhiWhat have you learnt from the reading passage?What have you learnt from the reading passage?What have you learnt from the reading passage?What have you learnt from the reading passage?
2、Where do greenhouse gases come from?Where do greenhouse gases come from?Where do greenhouse gases come from?Where do greenhouse gases come from?The main reason of global warming is extra greenhouse gases.Many greenhouse gases occur naturally in the atmosphere.Others are man-made.Extra man-made Extra
3、 man-made greenhousegreenhouse gases gases Global warmingGlobal warmingWhat can you see in these pictures?chimneyindustrycoalsmogNew energy-efficient vehiclesAir pollutionAir pollutionDo you know where the second photo was taken?Are these similar environmental problems in your city or town?What does
4、 the last picture mean to you?Activity 2：True(T)or false(F)?Listen to an interview with an air pollution expert and decide whether the statements are true(T)or false(F).1.The expression“smog”originated in Britain and means a combination of“smoke and“fog”.2.Smog became a severe problem in Britain bec
5、ause people at that time burnt lots of fossil fuels.3.The worst smog in British history happened in London in 1942.4.The Great Smog of London claimed 5,000 lives.5.Later,the UK government ordered people not to burn wood in their homes.T T F F F Activity 3：Listen again and take notes.Listen again and
6、 take notes on what the expert said.Then summarize the information you got from the interview.Take notesBe concise Use your own wordsListen for the“cue”In active listening,summarizing helps you review the key points of a speakers message.In order to write a good summary,you must take notes of the mo
7、st important points as you listen.When summarizing,you need to be as concise as possible and use your own words.Summarise InformationBen Drake,an export on air pollution,is being interviewed on the radio.He said that smog was a severe problem _century in Britain.At that time,Britain was experiencing
8、 a boom in_.Factories and homes _,which created smog.He also mentioned the heavy smog in London _ in 1952.Later the UK government restricted _ in homes and forced factories to_.As smog is harmful to everyone,the expert advised us to _,use _,and further develop _.industry used lots of coal was partic
9、ularly bad and caused over 4000 deaths in the early 20th burning coalmove away from city centersreplace coal with cleaner forms of energynew energy-efficient vehiclesgreen technologyGood morning,listeners.Air pollution is a serious problem,with urban populations particularly at risk from smog.Ben Dr
10、ake is an expert on air pollution,and he is joining us today to talk about this issue.Ben,where does the word“smog come from?“Smog”comes from a combination of the words“smoke”and“fog”.It originated in Britain ,when smog was a severe problem.Why was it so bad then?Well,Britain was one of and factorie
11、s and homes used lots of coal.When burnt,the coal produced harmful emissions which created lots of smog.In London,they also called the smog a“pea soup”because it was as thick as soup.That sounds terrible!What problems did it cause?Hostess:Ben Drake:Hostess:Hostess:Ben Drake:in the early 20th century
12、the first industrial countries Smog caused many health issues and killed many people.The worst case happened in London in 1952.Over a few days when the smog was particularly bad,4,000 deaths were recorded.It was necessary to .The UK government ordered people and forced factories to .But smog is stil
13、l an important issue in many places.What can be done about it?Smog is harmful to everyone,especially to children,old people,and those with heart or lung problems.We have to and for everyones health and wellbeing.We should ,and we need to use .We have the ,but we must use and develop it.Yes.Lets hope
14、 we can make some big changes.Thanks,Ben.Thank you.take immediate actionnot to burn coal in their homes move away from city centresreduce smog improve air quality replace coal with cleaner forms of energynew energy-efficient vehiclestechnologyBen Drake:Hostess:Ben Drake:Hostess:Ben Drake:1.Have you
15、experienced heavy smog where you live?Have you seen photos of big cities under clouds of smog?What is it like?2.What do you think are the major causes of smog in China?3.What measures have the government and citizens taken to help address the problem?Referring to common knowledgeEveryone knows that.We all know that.As is known to all,.Most people think that.There is no doubt that.It is obvious that.