国际英语2电子教案B2_U4PPT格式课件下载.ppt

1、CoverCONTENTBook 2 Unit 4-Environment-Text（A）-Text（B）Book 2 Unit 4-Environment Content-2Text studyText studyBackground informationWords and expressionsTextLooking at the textLooking at the textWorking with wordsWorking with wordsListeningListeningListening 1Listening 2Listening 3People and issues Te

2、xt（A）Book 2 Unit 4-Environment Content-3Text studyText studyBackground informationWords and expressionsTextLooking at the textLooking at the textWorking with wordsWorking with wordsListening 4Listening 5ListeningListeningSpeakingSpeakingPersonal view Text（B）Book 2 Unit 4-EnvironmentBrief summary of

3、the unitTopics Environmental pollutionThe effects of global warmingEnvironmentally friendly methods of transport Recycled goods Reducing the production of personal garbage Ways of savingenergy Being environmentally awareSkills Writing a summary Interpreting warning signs Explaining a process Compari

4、ng two texts,looking at key points Writing:#Writing a report on safety signs Project:#Analysing rubbish produced by students Grammar Adverbial clausesBook 2 Unit 4-EnvironmentWarming up Carbon dioxide is one of the simplest and commonest molecules in the universe.It has only three atoms one carbon a

5、nd two oxygen atoms.We breathe out carbon dioxide.Plants breathe in carbon dioxide and give off oxygen,which is why we need plants and green belts around the city.What kinds of pollution do you know?#Please look out of the window and answer what pollution there is out there and give examples of how

6、it is produced.Do you know what CO2 is?#_Book 2 Unit 4-Environment1.What kinds of pollution are shown in these pictures?#air pollutionFocus water and environmental pollution Book 2 Unit 4-EnvironmentFocus water pollutionair pollutionBook 2 Unit 4-EnvironmentFocus noise pollutionwater and environment

7、al pollution noise pollutionBook 2 Unit 4-EnvironmentFocus 2.Work with a partner and find more examples of these kinds of pollution.Another example of environmental pollution is when we throw our rubbish in the street or out of cars.Even throwing rubbish around in the school is environmental polluti

8、on.Another example of noise pollution is when one plays his music too loudly or has the TV on full volume.Water pollution is when an oil tanker breaks up and loses its cargo.Air pollution is when a lot of people smoke in one room,or when only one person is travelling in a car instead of four people.

9、Book 2 Unit 4-EnvironmentFocus 3.What can we do to stop this?#We can stop this by not using the car for short journeys and walking or taking public transport.We could put a higher tax on fuel so that people would not travel alone in their car but share the cost.Book 2 Unit 4-EnvironmentFocus 4.What

10、can you personally do?#I can stop smoking.I can stop throwing rubbish in the streets.I can try to recycle my rubbish by putting it in the proper containers.I can turn down the volume of the TV or my music system.Book 2 Unit 4-EnvironmentThe United Nations Environment Programme（UNEP）is an internation

11、al institution（a programme,rather than an agency of the UN）that coordinates United Nations environmental activities,assisting developing countries in implementing environmentally sound policies and practices.Its activities cover a wide range of issues regarding the atmosphere,marine and terrestrial

12、ecosystems,environmental governance and green economy.It has played a significant role in developing international environmental conventions,promoting environmental science and information and illustrating the way that can be implemented in conjunction with policy,working on the development and impl

13、ementation of policy with national governments,regional institutions in conjunction with environmental non-governmental organizations（NGOs）.UNEP has also been active in funding and implementing environment-related development projects.Background information Words and expressions Text Text study（A）Un

14、ited Nations Environment ProgrammeText A-background-1-1Book 2 Unit 4-EnvironmentBackground information Words and expressions Text Cyclone In meteorology,a cyclone is an area of closed,circular fluid motion rotating in the same direction as the Earth.This is usually characterized by inward spiraling

15、winds that rotate anti-clockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere of the Earth.Most large-scale cyclonic circulations are centered on areas of low atmospheric pressure.The largest low-pressure systems are cold-core polar cyclones and extratropical cyclones which li

16、e on the synoptic scale.Cyclones can produce cloudy weather and broad areas of rain and even snow.Text A-background-2Text study（A）Book 2 Unit 4-Environmentdesperately adv.very or very much 极度地，极强烈地 environment n.surroundings 环境committee n.a group of people chosen to do a particular job,make decisions,etc.委员会 critical adj.serious or worrying 危急的，严重的 industrial adj.relating to industry 工业的climate n.weather 气候 Background information Words and expressions Text Text A-words and expressions-1Text study（A）Boo