课件41张PPT。Unit 3
Language in useModule 9 PopulationLead-in2012年中国召回汽车的数量：1，827，500Read the number aloud.世界人口的数量：6,302,309,691到2012年底，普通高校在校学生人数：
25，365，647Beijing is a huge city.
2. It takes an hour to get there by bus.
3. That’s almost one fifth of the world’s
population.
4. That makes over 131.4 million births
a year.Language practicePay attention to these sentences.1. 不定冠词 a / an的用法：
1) a 用以辅音音素开头的单词前，an 用以元音音素开头的单词前。 例如： a book, a table, an elephant, an orange
2) 表示数量“一”，意思与“one”接近，但数的概念没有one强。例如：
The little girl played a whole day outside.
这个小女孩在外面玩了一整天。
3) 用于首次提到的某人或某物前，表泛指。
A teacher from England will teach us English.
一位来自英格兰的教师将教我们英语。 4) 用于可数名词的单数前，表示一类人或物。 A tiger is very dangerous. 老虎很危险。
5) 表示某类人或事物当中的任何一个，相当于one。泛指人或事物的类别。例如：
He is a ball player. 他是一位棒球手。
6) 表示“每一个”，相当于every。用在表示时间，速度，价格的名词前。
You should take this medicine three times a day.
你应该每天服三次药。
7) 表示 “某一” 。
A Mr. Wang is waiting for you.
一位姓王的先生在等你。2. 定冠词 the 的用法:
定冠词是指特定的人或物，用于特指的名词前。
例如：
The book is mine. 这本书是我的 。
2) 表示上文提到的或说话双方都知道的人或物。
例如：
I heard a report. The report was about war.
我听了一个报告，这个报告是关于战争的。
Please close the window before you fall asleep.
请在睡觉之前关上窗子。 3) 用于序数词、形容词最高级以及对两者进行比较时起特定作用的比较级前。例如：
Our classroom is on the second floor.
It’s the most interesting book I have read.
I have two sisters. The elder one is a doctor.
4) 世界上独一无二的事物前常用the。例如：The moon goes round the earth.
5) 在姓的复数形式前加the，表示一家人或夫妇二人。例如：
the Greens 格林一家人或格林夫妇。
6) 用于某些形容词前表示一类人或事物。 the rich, the poor, the old 7) 用于江河、山脉、湖泊、岛屿、杂志和报纸等专有名词前。例如：
the Changjiang River, the Great Wall,
the Summer Palace
8) 用于由普通名词构成的专有名词前。例如：
the United States
9) 用于乐器名称前。例如：
play the piano / violin
10) 用于固定短语中。例如：
at the moment, by the way, in the middle of3. 零冠词的用法
一般来说，在一个句子中有时不加冠词，如 We go to school by bus.
这种不加冠词的现象，就叫“零冠词”。
复数可数名词前，表示人或物的类别，或泛指不定
量的人或物。例如：
Horses are useful animals.
There are pens and books on the desk.2) 当名词前有物主代词、指示代词、不定代词及名词所有格等修饰时。例如：
She is our math teacher. The man in blue is Mary’s father. No one can get this book.
3) 交通工具、学科名词前。
by boat, on foot I like chemistry.
4) 球类运动、棋类游戏及语言名称前。 He prefers to play football. The two old men are playing chess. Can you speak English? 5) 季节、月份、星期、节日、一日三餐等名词前。例如：
in spring, on Monday Children’s Day is coming. I ate some noodles for lunch.
6) 某些固定搭配的词组。
in public; go to bedMina is (1) ____ eighteen-year-old girl. She’s got (2) ____ brother and (3) ____ sister. Mina is (4) ____ oldest child in (5) _____ family. She lives in (6) ____ very big city. She has (7) ___ job in (8) ____ hotel. She hopes that one day she will have (9) ___ chance to go to (10) ___ college.antheaatheaaaaComplete the passage with a, an or the where necessary.Read your answers to Activity 1 the whole class.China has a population of …Now listen and check.1. China
2. the US
3. Australia
4. New Zealandd) 1,370,537,000c) 314,791,000 a) 4,437,000b) 22,956,000Work in pairs. Match the countries with their populations.Learning to learnWhen you see a table or a chart, look carefully at the labels and graphs to make sure that you understand what they are showing. Look at the chart below. What is it comparing? What can you conclude? Read the chart and answer the questions.1. Which city had the largest population in 2000?
2. Which city’s population will increase the most from 2000 to 2025?Tokyo had the largest population in 2000.Mumbai’s population will increase the most from 2000 to 2025.3. Which city will have a larger increase in its population, New York or Mexico City?
4. Which city/cities do you think will have the biggest population problem? Why?Mexico City will have a larger increase in its population.I think Mumbai will have the biggest population problem because its population will increase the fastest.1. We believe the schools in Arnwick are very good, and we’re working to make them even _______.
2. Their flat is too large for two people. They want to find a _______ one.bettersmallerfew good much smallComplete the sentences with the correct form of the words in the box.3. Anna always talks about her ideas. I think she needs to listen ________.
4. There are a lot of parks in this city. I think there are ______ parks in a lot of other cities.morefewerComplete the diagram showing population problems. Use the words in the box to help you.air city countryside hospital increase public service traffic waterProblems of Arnwick the countryside the cityincreaseswater pollution air pollutionnot enough hospitalsneed more schools and buses; need better public services; need more police to protect peopletoo much trafficrubbish (crowed flats) Our world is facing many problems. Two of the biggest are the increasing population and pollution.
The (1) __________ of the world is
increasing quickly. Why is this happening?
Because more babies are born every year and people also live longer. populationcountryside pollution population space trafficComplete the passage. Many people are leaving the (2) __________ to work in the cities, but there is not enough (3) _____ for so many people.
Another huge problem for the world is (4)
________. There’s so much (5) ______ on the roads that in some cities the air is heavily polluted. We should work harder to protect our world.pollutiontraffic countryside space 1. Growing population is a problem ________________.
2. The population of China will grow more slowly ____________.all over the worldall over the world closed down
in the future it takes not … any more in the future Complete the sentences with the expressions in the box.3. The supermarket ___________ when a bigger one opened in the town.
4. Usually _________ an hour to get there by bus.
5. The town had a lot of pollution in the past but it’s _____ a problem _________.closed down it takes not any more a) It’s cheaper to share a car than to have a personal car.
b) People in a car club don’t often take
buses, trains or the underground.
c) There are no car clubs in the US.
d) Joining car clubs is good for you and for the city.Listen and choose the best summary.Joining a car club is cheaper / more expensive than having a personal car.
People in car clubs pay for / don’t pay for a car when they drive.
People in car clubs sometimes / never take a bus or ride a bike.
People in car clubs probably are / are not healthier.Listen again and choose the correct answer.Do you think car clubs would be popular in China? Why / Why not?Work in pairs and discuss this question.Around the worldWorld population and water
With more and more people in the world, more and more water is used. In fact, water use is growing more than twice as fast as the world’s population! As a result, getting good, clean water is becoming a problem in many places. A lot of water is polluted and in many areas people have to walk a long way to get clean water for daily use. More than 3.4 million people die each year from drinking and washing with polluted water. So let’s do everything we can to stop the pollution and save water.Choose a country or town which interests you. It could be your home town.
Decide the points of time you want to look at – for example, now, ten years ago and ten years from now.
Research the population of your place in those years. Write your notes carefully.Work in groups. Prepare to make your graph.Module task: Making a graphDecide how you want to make your graph.
Draw it and color it. You can also make it on the computer.
Label it clearly.Make your graph and present your graph to the class.Write a paragraph to describe your graph. In the graph, we can see how the population in the town changed between 1900 and 2000. we can see the population going up the vertical line and the years going across the horizontal line. The graph shows the population increased by more than one hundred percent from two and a half million toPossible answer five million in one hundred years. At first it increased very slowly, but after 1945 it increased much more quickly. From 1990 to 2000, the population even increased by one million. The town itself also grew in size during this time.1. — Did you see Mr. Black just now?
— Yes. He _____ his car when I met
him.
A. parked B. was parking
C. parks D. will park
2. The girl suddenly fell _____ the bike and I sent her to hospital at once.
A. on B. of C. off D. toBCExercises3. Yesterday evening, I was walking along the street _____ I suddenly met my maths teacher.
A. when B. while C. but
4. — Where were you at 7:00 last
night?
— I _____ to my mom at home.
A. write B. was writing C. wroteAB中考链接He wrote his ______ novel when he was ______.
A. five; fifties B. fifth; fifty
C. fifth; fiftieth
2. Did you know that the earth is home to _____ animals?
A million B. millions
C. million of D. millions of BD3. — _____ is your mother?
— She is _____ English teacher.
A. Who; the B. What; /
C. What; an D. Who; aC
