外研版八年级上册 Module 9 Population Unit 3 Language in use 课件(共27张PPT)

(共27张PPT)
Unit 3 Language in use
Module 9 Population
Revise the new words
Revision
noise, prepare, report, billion, huge, increase, notes, cause, problem, grow, birth, flat, rubbish, quiet, local, mention, pollution, solve, public, service, pupil, reduce, create
Work in pairs. Match the countries with their populations in 2020.
1. China a) 5,084,000
2. the US b) 25,690,000
3. Australia c) 331,698,000
4. New Zealand d) 1,411,780,000
Revision
Read your answers to Activity 1 to the whole class.
China has a population of...
Revision
Now listen and check.
one 1
two 2
three 3
four 4
five 5
six 6
seven 7
eight 8
nine 9
ten 10
eleven 11
twelve 12
thirteen 13
fourteen 14
fifteen 15
sixteen 16
seventeen 17
eighteen 18
nineteen 19
1-19的基数词
Grammar 基数词
twenty 20
thirty 30
forty 40
fifty 50
sixty 60
seventy 70
eighty 80
ninety 90
twenty-one 21
twenty-two 22
………………
其它的十位数照此类推，如：
thirty-one 31
forty-two 42
seventy-five 75
ninety-six 96
20—90等十位数
百、千、万
百 hundred 100 one hundred
200 two hundred
以此类推······
千 thousand 1 000 one thousand
2 000 two thousand
英语里没有“万”这一单位，万也用thousand
表示。如：
10 000 ten thousand 一万
20 000 twenty thousand 两万
4、十万、百万
十万的说法是：100,000 a (one) hundred thousand
200,000 two hundred thousand
million 百万 a (one) million 1 000 000
two million 2 000 000
········以此类推 ······
8 000 000 eight million
在英语中，对于万以上的数字，我们改如何表达呢？这就要记住英语数字读法特点。以下面一个数字为例：
6，500，431，729
hundred
thousand
million
billion
注意每三个数为一个单位，按照百、
十、个向下读。
大数字的表达方法
英语分数的表示法：
用“基数词＋序数词”表示，其中基数词表示分子，序数词表示分母。分子除用one外，也可用a；如果分子大于1，分母要用复数形式。
Two thirds of the students have passed the exam. 三分之二的学生考试及格了。
注意：1／2不能说a（one）second，而要说a（one）half。
1／4和3／4可以说a（one）fourth和three fourths，但常用a quarter和three quarters表示。
若它们在句子中作主语，则谓语动词是用单数还是复数取决于名词，即与分数所修饰的名词保持一致。
About two thirds of the students attend the meeting．
大约2／3的学生都参加了会议。
Read the chart and answer the questions.
Grammar
1. Which city had the largest population in 2018
2. Which city’s population will increase the most from 2018 to 2030
3. Which city will have a larger increase in its population, Mumbai or Cairo
4. Which city/cities do you think will have the biggest population problem Why
Mexico City had the largest population in 2018.
Dhaka will increase the most from 2018 to 2030.
Cairo will have a larger increase in its population.
I think Dhaka will have the biggest population problem, because its population will increase the fastest.
冠词是一种虚词，没有词义，没有数和格的变化，不能单独使用，只能帮助名词或起名词作用的其他词类说明其意义。
冠词有三种形式：
不定冠词 a(n), 定冠词the和零冠词。定冠词特指某一特定名词，不定冠词泛指一般普通名词。零冠词是指名词前面没有不定冠词(a/an)、定冠词(the)，也没有其他限定词的现象。
冠词的用法
冠词的分类
种类 形式 意义 例词
不定冠词 a /an 只能用在可数名词前,表示 “一”的意思.a用在以辅音音素开头的单词前;而an用在以元音音素开头的单词前． a desk
an hour
a horse
an egg
a hand
定冠词 the 表示某一类或某个特指的人或物，可与名词的单, 复数连用． the map
the man
the earth
一、不定冠词的用法。
1. 首次提到某人, 不定冠词起介绍作用。
I’m preparing some notes for a report.
我正在为一个报告准备笔记。
2. 表示“每一”的概念，相当于 every。
I go to the cinema once a month.
我一个月去看一次电影。
3. 某些固定短语中，要用不定冠词。
have a good time, in a hurry, have a break
二、定冠词的用法。
1. 指前面提到过的人或物，或特指某人或某物。
I have a dog. The dog is brown.
2. 指谈话双方都知道的人或物。
I had to write the same report last term!
3. 用于序数词以及形容词的最高级之前。
He went to the first floor.
4. 用于世界上独一无二的事物。
The sun is shining brightly.
5. 在江河、海洋、山脉等地理名词前及由普通名词构成的专有名词前。
the Great Wall of China
6. 用于表示方位名词前。
Guangdong is in the south of China.
7. 用在弹奏乐器中。
The boy is playing the piano.
8. 在某些形容词前加定冠词，表示一类人或物。
The old are dancing on the playground.
9. 在姓氏复数形式之前, 表示“一家人”或“夫妇两人”。
The Browns are really a large family.
10. 用于某些固定短语中。
by the way
三、零冠词。
1. 在球类活动、学科名称前，以及节日、月份、星期前不用冠词。
1st June is Children’s Day.
2. 名词前已有指示代词、物主代词、不定代词或数词等作定语的名词前不用冠词。
I have several questions to ask.
3. 在某些固定词组和习惯用语中不用冠词。
by bus at night in trouble
四. 定冠不定冠 意思差千万
有些名词前用冠词或不用冠词，其意义有所不同。
如：
1)at table在吃饭；
at the table在桌子旁
2)in class在上课；
in the class在班级中
3)go to school去上学;
go to the school到那所学校去
4)go to bed上床睡觉;
go to the bed到床那边去
5)in front of在…的前面 ;
in the front of在…的前部.
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.
Complete the passage with a, an or the where necessary.
an
a
Grammar
a
the
the
a
a
a
a
/
1. We believe the schools in Arnwick are very good, and we are working to make
them even ________.
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.
Complete the sentences with the correct form of the words in the box.
better
smaller
more
fewer
Vocabulary
few　good　much　small
Complete the diagram. Use the words in the box to help you.
air city flat public service school traffic
Vocabulary
Problems Reasons Solutions
● People from Parkville live in __________________ ____________________. ● It __________________ to go to school by bus. ● ____________________. ● ____________________ ___________________. ● ____________________ ____________________. ● ____________________ ____________________ ____________________ ____________________. ● ____________________. ● The government is
making a great effort to
____________________
___________________.
◎ ____________________
____________________
____________________.
◎ ____________________
____________________.
From Parkville to Arnwick: problems and solutions
flats outside the centre
of Arnwick
takes an hour
There is air pollution
People moved to the
city to find jobs
It was expensive to live
in the city centre
Parkville became part of
Arnwick, and the
population of Arnwick
became even larger
The traffic is bad
solve Arnwick’s problems
with better public services
There will be more schools,
so pupils won’t need to
travel far
The government is reducing
air pollution from traffic
Our world is facing many problems. Two of the biggest are increasing population and pollution.
The (1)__________ of the world is increasing quickly. 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 is so much (5)________ on the roads that in some cities the air is heavily polluted. We should work harder to protect our world.
Complete the passage with the words in the box.
population
countryside
space
pollution
Vocabulary
countryside pollution population space traffic
traffic
1. Growing population is a problem __________________.
2. The population of the world 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 pollution in the past but it is _____ a problem ________.
Complete the sentences with the expressions in the box.
all over the word
in the future
closed down
it takes
Vocabulary
all over the world closed down in the future it takes not... any more
not any more
Listening
Listen and choose the best summary.
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. (　　)
√
Listening
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.
Group work
Read Around the world first.