Module 9 Population. Unit 2 Arnwick was a city with 200,000 people. 课件（33张PPT）

课件33张PPT。Module 9Unit 21. How many babies are born every
minute?
2. How many babies are born every year?
3. What’s the population of China?
4. What’s the population of the world?Revision China has the largest population in the world.The population problem is one of the most serious problems in the world today. If population grows too fast, what will bring to the world?
What’s the bad effect of overpopulation? food shortage
water shortage
city problems
pollutionBad effectsWater Shortage约占世界人口总数40%的80个国家和地区严重缺水。目前，全球80多个国家的约15亿人口面临淡水不足，其中26个国家的3亿人口完全生活在缺水状态。预计到2025年，全世界将有30亿人口缺水，涉及的国家和地区达40多个。These are not true snows.
These are plastic bags.白色污染(White Pollution)是人们对难降解的塑料垃圾（多指塑料袋）污染环境现象的一种形象称谓。它是指用聚苯乙烯、聚丙烯、聚氯乙烯等高分子化合物制成的各类生活塑料制品使用后被弃置成为固体废物，由于随意乱丢乱扔，难于降解处理，以致环境严重污染的现象。Sometimes colorful things are a kind of burden!Tomorrow’s mountainOverpopulation makes the traffic crowded. It makes the environment terrible. So we must try our best to control the population.Where do you prefer to live, in a quiet country village or a big city? Why?Work in pairs and answer the questions.
Using the words in the box to help you.countryside field flat hospital
job office rubbish villageBecause they want to look for jobs and have a better life.1. Why do people move to cities?2. What are the problems of big cities?Pollution, crime, loneliness, rubbish collection and so on are the problems of cities.Read and answer the questions. What was Parkville like when Jo’s grandparents first came to Parkville?
2. What is Arnwick?
3. What is Parkville now?It was a quiet country village.It is a city near Parkville.It is a part of Arnwick, with over a million people.4. Why did people move to the big city Arnwick?
5. How long does it take Jo to go to school now?Because people wanted to find jobs there.It takes an hour by bus.Para. 1Para. 3Para. 4Para. 5Para. 2New problems.
The lesson we got from the story.
C. The old Parkville.
D. The new needs.
E. The changes in Parkville.Read the passage again and match the headings with the paragraphs. Where did they live in Parkville?They lived in a small house, close to fields and hills.Para. 1 The old Parkville. Was Parkville far from Arnwick?
2. Why were buildings built outside the centre of Arnwick?
3. What problems does Jo’s family have to live in a flat?No, it was near Arnwick.Para. 2 The changes in Parkville.Because it was expensive to live in the centre of Arnwick.It is very crowded, and rubbish is also a problem. The small local school is still open.
2. The new school is close to Jo’s home.
3. The longer journey has a lot of traffic and pollution.closed down.far fromPara. 3 New problems.True or false.FFTPara. 4 New needs.Arnwick needs more schools, buses and __________. It needs fresh air, clean water, and better ____________. It needs more ________ to protect people. It needs ___________
to do all these things.Fill in the blanks.hospitalspublic servicemore money policePara. 5 The lesson we got from the story.What does the writer want to tell us?Population increase is a big problem in big cities. Pollution, rubbish collection, traffic and so on are the problems of cities. We should protect our Earth.Parkville (a quiet village)

People moved to Arnwick.
Parkville (became part of Arnwick)
Arnwick became larger.
New problems (education, traffic, pollution…)
More things needed (school, buses, hospitals, fresh air, clean water, police, more money…)Retell the story according to the clue.Where do you live, in a village, a town or a city?
What problems do you think your home town has? Can you give some advice?Free talk Do you have any ideas of solving these
problems?Imagine that you and your family have moved from the countryside to the city.Write an email to a friend about your new life in the city.Writing Read and check the problems that exist in your home town.( ) 1. Many young people want to leave the countryside because they want to find jobs in the city.( ) 2. There are not enough schools and hospitals in big cities.( ) 3. Too much traffic brings air pollution. Writing ( ) 4. There is too much rubbish in the streets.( ) 5. There are not enough police in the city.( ) 6. It is difficult to get enough clean water.Write about a problem your home town has. Write down your suggestions to solve the problem.