[外研版]八年级英语上学期Module9Unit3优质课件.ppt

1、Module 9 Population 外研外研八年级上册八年级上册 Unit 3 Language in use Language practice Beijing is a huge city. It takes an hour to get there by bus. Thats almost one fifth of the worlds population. That makes over 131.4 million births a year. 冠词和数词基数词的用法冠词和数词基数词的用法 1.冠词冠词 (1)不用冠词的情况不用冠词的情况 在专有名词或不可数名词前。在专有名词或不

2、可数名词前。 China is my home town. 名词前有指示代词、物主代词或不定代词名词前有指示代词、物主代词或不定代词 作定语。作定语。 There are many apples in the basket. 在一日三餐、球类运动、棋类运动、在一日三餐、球类运动、棋类运动、 学科及季节、日期的名词前。学科及季节、日期的名词前。 play volleyball 打排球打排球 learn English 学英语学英语 have dinner 吃晚饭吃晚饭 在某些固定短语中。在某些固定短语中。 at night 在晚上在晚上 (2)不定冠词不定冠词 a/an a 用在读音以辅音音素开

3、头的名词前；用在读音以辅音音素开头的名词前； an 用在读音以元音音素开头的名词前。用在读音以元音音素开头的名词前。 a boy 一个男孩一个男孩 an apple 一个苹果一个苹果 用于可数名词单数前，表示“一个”相当于用于可数名词单数前，表示“一个”相当于one。 This is an apple. 用在可数的、单数形式的普通名词前，表示价用在可数的、单数形式的普通名词前，表示价 格、速度、时间、频率等度量上的“每一”。格、速度、时间、频率等度量上的“每一”。 I watch TV once a week. 首次提到某人或某物，不定冠词起介绍作用。首次提到某人或某物，不定冠词起介绍作用。

4、A girl wants to ask for some help. 用在序数词前表示“又一、再一”的意思。用在序数词前表示“又一、再一”的意思。 I want to have a second one. 用于固定短语中。用于固定短语中。 have a good time (3)定冠词定冠词 the 用于谈话双方都清楚的名词前，表示特指。用于谈话双方都清楚的名词前，表示特指。 I had to go to the shop at that time. 用于再次被提到的名词前。用于再次被提到的名词前。 I have a cat. The cat is black. 特指某人或某物。特指某人或某物

5、。 The boy with short hair is my cousin. 用于形容词最高级或序数词前。用于形容词最高级或序数词前。 the first boy 用于世界上独一无二的事物或乐器名词前。用于世界上独一无二的事物或乐器名词前。 the sun play the piano 注意注意 在某些词组中，名词前用冠词和不用在某些词组中，名词前用冠词和不用 冠词的意义有所不同。冠词的意义有所不同。 in class 在课堂上在课堂上 in the class 在班里在班里 in hospital 生病住院生病住院 in the hospital 在医院里在医院里 in front of

6、在在（外部）的前面（外部）的前面 in the front of 在在（内部）的前面（内部）的前面 2.数词基数词数词基数词 (1)基数词从基数词从 1-12，写法都不同。，写法都不同。 one, eleven (2) 13-19 都是以后缀都是以后缀 -teen 结尾。结尾。 thirteen (3)十位数和个位数之间添加连字符。十位数和个位数之间添加连字符。 21 twenty-one (4)百位数与十位数之间要用百位数与十位数之间要用 and 。 101 one hundred and one (5)千位数以上的数，从数字的右端向左端数千位数以上的数，从数字的右端向左端数 起，每三位数加

7、一个“起，每三位数加一个“,”。”。 从右开始，第一个从右开始，第一个 “,”前的数字后添加”前的数字后添加 thousand ，第二个“，第二个“,” 前的数字后添加前的数字后添加 million ，第三个“，第三个“,”前的数字前的数字 后添加后添加 billion。然后一节一节分别表示，两个。然后一节一节分别表示，两个 逗号之间最大的数为百位数形式。逗号之间最大的数为百位数形式。 2 , 427 , 155 , 256 读作读作: two billon, four hundred and twenty-seven million, one hundred and fifty-five t

8、housand, two hundred and fifty-six 1 China a) 4,437,000 2 the USA b) 22,956,000 3 Australia c) 314,791,000 4 New Zealand d) 1,370,537,000 1 Work in pairs. Match the countries with their populations. When you see a table or a chart, look carefully at the labels and graphs to make sure that you unders

9、tand what they are showing. Look at the chart below. What is it comparing? What can you conclude? Learning to learn 2 Read your answers to Activity 1 to the whole class. China has a population of Now listen and check. 3 Read the chart and answer the questions. 加尔各答加尔各答 孟买孟买 纽约纽约 墨西哥城墨西哥城 东京东京 Popula

10、tion (million) 13.1 18.7 16.4 26.6 17.8 23.6 18 24.6 34.4 38.7 1 Which city had the largest population in 2000? 2 Which citys population will increase the most from 2000 to 2025? Tokyo had the largest population in 2000. Mumbais population will increase the most from 2000 to 2025. 3 Which city will

11、have a larger increase in its population, New York or Mexico City? Mexico city. 4 Which city / cities do you think will have the biggest population problem? Why? I think Mumbai will have the biggest population problem because its population will increase the fastest. 4 Complete the passage with a, a

12、n or the where necessary. Mina is (1) _eighteen-year-old girl. She has got (2) _ brother and (3) _ sister. Mina is (4) _ oldest child in (5) _ family. a an a the the a 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)

13、_ college. a a a a / 5 Complete the sentences with the correct form of the words in the box. few good much small 1 We believe the schools in Arnwick are very good, and we are working to make them even _. better 2 Their flat is too large for two people. They want to find a _ one. 3 Anna always talks

14、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. few good much small smaller more fewer 6 Complete the diagram showing population problems. Use the words in the box to help you. air city countryside hospital

15、increase public service traffic water Problems of Arnwick Problems: Population _ People arrive in _ People move from _ the city. increases. the countryside. Environmental problems Examples: _ _ _ _ the air the water the traffic the rubbish Health problems Example: _ _ _ _ not enough hospitals Proble

16、ms for the government Examples: _ _ _ Need more schools and buses. Need more police to protect people. Need better public services. 7 Complete the passage with the words in the box. countryside pollution population space traffic Our world is facing many problems. Two of the biggest are increasing po

17、pulation 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. Many people are leaving the (2) _ to work in the cities, but there is not enough (3) _ for so many people. population countryside space An

18、other huge problem for the world is (4) _. There is so much (5) _ on the roads that in some cities the air is heavily polluted. We should work harder to protect our world. pollution traffic 8 Complete the sentences with the expressions in the box. all over the world closed down it takes in the futur

19、e not any more 1 Growing population is a problem _. all over the world 2 The population of China may grow more slowly . 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 population in the past but it is a problem . it takes not any

20、 more in the future closed down a) It is cheaper to share a car than to have a personal car. b) People in a car club do not 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. 9 Listen and choose the best summary. 1

21、0 Listen again and choose the correct answer. 1 Joining a car club is cheaper / more expensive than having a personal car. 2 People in car clubs pay for / do not pay for a car when they drive. 3 People in car clubs sometimes / never take a bus or ride a bike. 4 People in car clubs probably are / are

22、 not healthier. Tapescript Joining car clubs is a good way to get around in cities. There are many car clubs in the US. You can use a car when you want to, and its cheaper than having a personal car. You only pay for the car when you drive it. You dont always use the car because sometimes you can ta

23、ke a bus, or walk or ride a bike. This is healthier for the city, as there will be fewer cars on the road. It is also healthier for you. Do you think car clubs would be popular in China? Why / Why not? In my opinion, car clubs 11 Work in pairs and discuss this question. World population and water Wi

24、th 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 worlds 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

25、to get clean for daily use. More than 3.4 million people die each year from drinking and washing with polluted water. So lets 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 loo

26、k 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. 12 Work in groups. Prepare to make your graph. Decide how you want to make your graph. Draw it and colour it. You can also make it on the computer. Label it

27、clearly. 13 Make your graph. 14 Write a paragraph to describe your graph. 15 Present your graph to the class. Homework Possible answer 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.