人教版 (2019)选择性必修 第三册Unit 3 Environmental Protection完美版课件ppt

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Talk abut air pllutin
What has caused envirnmental pllutin in the abve picture?
What cnsequences the envirnmental pllutin has brught?
Smke emissins
Lung diseases
Befre yu listen，lk at the pictures belw and discuss the questinsin grups.
I can get infrmatin abut where the pictures were taken，fr example，the bridge is in Lndn，and the chimneys are in a pwer statin. Bth places lk very plluted. I can see that the car is pwered by electricity as it is plugged in. I can see sme cal being burned. These pictures tell me that the interview is prbably abut energy and pllutin.
These situatins influence my life nt nly by prviding electricity fr me，and transprting me，but als by plluting the air I breathe.
1 What infrmatin can yu get frm these pictures?
2 Hw d these situatins influence yur life?
Listen t an interview with an air pllutin expert and decide whetherthe statements are true（T） r false（F）.
1 The expressin “smg” riginated in Britain and means a cmbinatin f “smke” and “fg”. T□　F □ 2 Smg became a severe prblem in Britain because peple at that time burnt lts f fssil fuels. T □　F □ 3 The wrst smg in British histry happened in Lndn in 1942. T □　F □ 4 The Great Smg f Lndn claimed（4） 5，000 lives. T □　F □ 5 Later，the UK gvernment rdered peple nt t（5） burn wd in their hmes. T□　F □
Hstess： Gd mrning，listeners. Air pllutin is a serius prblem， with urban ppulatins particularly at risk frm smg. Ben Drake is an expert n air pllutin，and he is jining us tday t talk abut this issue. Ben，where des the wrd “smg” cme frm? Ben Drake： “Smg” cmes frm a cmbinatin f the wrds “smke” and “fg”. It riginated in Britain in the early 20th century，when smg was a severe prblem. Hstess：Why was it s bad then? Ben Drake：Well，Britain was ne f the first industrial cuntries and factries and hmes used lts f cal. When burnt，the cal prduced harmful emissins which created lts f smg. In Lndn，they als called the smg a “pea sup” because it was as thick as sup. Hstess：That sunds terrible! What prblems did it cause? Ben Drake：Smg caused many health issues and killed many peple. The wrst case happened in Lndn in 1952. Over a few days when the smg was particularly bad，4，000 deaths were recrded. It was necessary t take immediate actin. The UK gvernment rdered peple nt t burn cal in their hmes and frced factries t mve away frm city centres. Hstess：But smg is still an imprtant issue in many places. What can be dne abut it? Ben Drake：Smg is harmful t everyne，especially t children，ld peple，and thse with heart r lung prblems. We have t reduce smg and imprve air quality fr everyne’s health and wellbeing. We shuld replace cal with cleaner frms f energy，and we need t use new energy-efficient vehicles. We have the technlgy，but we must use and develp it. Hstess：Yes. Let’s hpe we can make sme big changes. Thanks，Ben. Ben Drake：Thank yu.
Listen again and take ntes n what the expert said. Then summarisethe infrmatin yu gt frm the interview.
Summarise infrmatin In active listening，summarising helps yu review the key pints f a speaker’s message. In rder t write a gd summary，yu must take ntes f the mst imprtant pints as yu listen. When summarising，yu need t be as cncise as pssible and use yur wn wrds.
Ben Drake，an expert n air pllutin，is being interviewed n the radi. He said that smg was a severe prblem 　　　　　　　　 century in Britain. At that time，Britain was experiencing a bm in 　　　　　　　　. Factries and hmes 　　 　，which created smg. He als mentined the heavy smg in Lndn 　　　　 　　　　　 　　 in 1952. Later the UK gvernment restricted 　　　　　　　　 in hmes and frced factries t 　　 　　　　　　. As smg is harmful t everyne，the expert advised us t 　　　　　　 　　　　，use 　　　　　　　 　， and further develp 　　　　　　　　.
in the early 20th
used lts f cal
was particularly bad and caused 4，000 deaths
burning cal
mve away frm city centres
replace cal with cleaner frms f energy
new energy-efficient vehicles
green technlgy
Wrk in grups. Discuss the questins. The expressins in the bx may help yu.
1 Have yu experienced heavy smg where yu live? Have yu seen phts f big cities under cluds f smg? What is it like? 2 What d yu think are the majr causes f smg in China? 3 What measures have the gvernment and citizens taken t help address the prblem?
I have ccasinally experienced heavy smg where I live. I have als seen pictures f heavy smg ver cities. It is very thick and hard t see thrugh. There is n dubt that it is nt a gd thing.
Industry and vehicles are the majr causes f smg in China.
Mst peple think that pllutin at a certain level is a necessary result f grwth，but the gvernment is taking measures t keep it in check by develping green energy slutins and cntrlling factry and vehicle emissins.
Referring t cmmn knwledge ·Everyne knws that... ·There is n dubt that... ·Mst peple think that... ·We all knw that... ·As is knwn t all，... ·It is bvius that...