Module 9 Population Unit 3 Language in use 课件39张PPT

英语（外研版）
八年级上册
English
Module 9
Population
Unit 3
Language in use
Language practice
Beijing is a huge city.
It takes an hour to get there by bus.
That’s almost one fifth of the world’s population.
That makes over 131.4 million births a year.
1
课堂导入
冠词和数词基数词的用法
1.冠词
(1)不用冠词的情况
①在专有名词或不可数名词前。
China is my home town.
②名词前有指示代词、物主代词或不定代词
作定语。
There are many apples in the basket.
③在一日三餐、球类运动、棋类运动、
学科及季节、日期的名词前。
play volleyball 打排球
learn English 学英语
have dinner 吃晚饭
④在某些固定短语中。
at night 在晚上
(2)不定冠词 a/an
① a 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。
a boy 一个男孩 an apple 一个苹果
②用于可数名词单数前，表示“一个”相当于one。
This is an apple.
③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”。
I watch TV once a week.
④首次提到某人或某物，不定冠词起介绍作用。
A girl wants to ask for some help.
⑤用在序数词前表示“又一、再一”的意思。
I want to have a second one.
⑥用于固定短语中。
have a good time
(3)定冠词 the
①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.
②用于再次被提到的名词前。
I have a cat. The cat is black.
③特指某人或某物。
The boy with short hair is my cousin.
④用于形容词最高级或序数词前。
the first boy
⑤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] 在某些词组中，名词前用冠词和不用冠词的意义有所不同。
in class 在课堂上
in the class 在班里
in hospital 生病住院
in the hospital 在医院里
in front of 在……（外部）的前面
in the front of 在……（内部）的前面
2.数词基数词
(1)基数词从 1-12，写法都不同。
one, eleven
(2) 13-19 都是以后缀 -teen 结尾。
thirteen
(3)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 and 。
101 one hundred and one
(5)千位数以上的数，从数字的右端向左端数起，每三位数加
一个“,”。 从右开始，第一个 “,”前的数字后添加
thousand ，第二个“,” 前的数字后添加 million ，第三个
“,”前的数字后添加 billion。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。
2 , 427 , 155 , 256 读作:
two billon, four hundred and twenty-seven million, one hundred and fifty-five
thousand, 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
Work in pairs. Match the countries with their populations.
2
课堂活动
01
Read your answers to Activity 1 to the whole class.
China has a population of…
Now listen and check.
Learning to learn
When 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?
02
Read the chart and answer the questions.
加尔各答
孟买
纽约
墨西哥城
东京
Population
(million)
13.1
18.7
16.4
26.6
17.8
23.6
18
24.6
34.4
38.7
03
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?
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.
Complete the passage with a, an 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. 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.
a
an
a
the
the
a
a
a
a
/
04
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 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.
smaller
more
fewer
05
Complete the diagram showing population problems. Use the words in the box to help you.
air city countryside hospital
increase public service traffic water
06
Problems of Arnwick
People move from _______________
People arrive in _________
Problems: Population __________
Environmental problems
Examples:
_______________
_______________
______________________________
Health problems
Example:
___________
___________
Problems for the government
Examples:
__________________
__________________
__________________
____________________________________
the countryside
the city
increases
water pollution
air pollution
not enough hospitals
need more schools and buses; need better public services; need more police to protect people
too much traffic
rubbish (crowed flats)
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 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. Many people are leaving the (2) __________ to work in the cities, but there is not enough (3) _________ for so many people.
population
countryside
space
07
Another 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
Complete the sentences with the expressions in the box.
all over the world closed down it takes in the future 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 more
in the future
closed down
08
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.
Listen and choose the best summary.
?
09
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 not healthier.
10
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 it’s cheaper than having a personal car. You only pay for the car when you drive it. You don’t always use the car because sometimes you can take 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…
Work in pairs and discuss this question.
11
World 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 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.
12
●Decide how you want to make your graph.
●Draw it and colour it. You can also make it on the computer.
●Label it clearly.
Make your graph.
13
Write a paragraph to describe your graph.
Present your graph to the class.
14
15
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.
The graph shows the population increased by
one hundred percent from two and a half million to 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.
3
课堂小结
1. We have learned to express some large numbers.
2. We have learned to how to use Articles.
3. We have learned to write about population problems.

A. 单项选择。
1.?I?read?______ story.?It?is?______ interesting?story.?
A.?a,?an? B.?a,?a? C.?the,?the? D.?the,?an?
2.?Britain?is?______?European?country?and?China?is
_______?Asian?country.?
A.?an,?an? B.?a,?a? C.?a,?an? D.?an,?a?
3.?_____China?is?____?old?country?with?____?long?history.?
A.?The,?an,?a? B.?The,?a,?a? C.?/,?an,?the? D.?/,?an,?a?
4.?Shut?_____door,?please.?
A.?a? B.?the? C.?an D./?
5.?Einstein?won?_____?Nobel?Prize?in?Physics in?1921.?
A.?a? B.?an? C.?the? D.?/?
A
C
D
B
C
4
课堂练习
6.?_____ elephant?is?bigger?than?______?horse.?
A.? /,?/? B. ?an,?a? C. ?An,?a? D.?/,?the?
7.?We?always?have?______ rice?for?______ lunch.?
A.?/,?/? B.?the,?/? C.?/,?a? D.?the,?the?
8.?It?took?me?______?hour?and?_____?half?to finish?______?work.?
A.?a,?a,?a? B.?an,?a,?a? C.?an,?a,?the? D.?an,?a,?/?
9.?______?doctor?told?me?to?take?_______ medicine three?times?_______ day and stay?in?______ bed,?then?I?would?be?better?soon.?
A.?/,?a,?a,?the? B.?A,?the,?the,?/?
C.?The,?the,?a,?/? D.?A,?/,?a,?/?
10.?There?is?______?picture?on?______?wall.?I?like?_____ picture?very?much.?
A.?a,?the,?the? B.?a,?the,?a? C.?the,?a,?a? D.?a,?an,?the?
C
A
C
C
A
11. ____ trees have been planted near here, so the air is very fresh.
A. Two hundreds B. Hundred of C. Hundreds of
12. How do you read 131,400,000? _______.
A. One hundred and thirty one million four hundred thousand
B. One hundred and thirty one million four hundred thousand
C. One hundred and thirty one million four hundred thousand
13. The number 22,135 reads _______.
A. twenty-two thousands one hundred and thirty-five
B. twenty-two thousand one hundred and thirty-five
C. twenty-two thousands one hundred thirty-five
D. twenty two thousand one hundred thirty-five
A
C
B
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