外研版英语九年级上册 Module11 Population Unit3.doc

MODULE 11 Population
Part 1: Teaching design
第一部分 教学设计
Function
Talking about and understanding large numbers
Structure
Articles; large numbers
Listening/Speaking
● Completing a table with numbers
● Talking about population
Reading/Writing
● Checking your own ideas with a passage
● Writing about the problems of your city
Around the world
Population and water
Task
Making a graph
Unit 3 Language in use
■Warm up by acting out the text.
Hi, class. Let’s go to page 90. We shall try to turn the text into a play and act it out. Which group is ready?
■Study uses of “articles”.
不冠词，定冠词，零冠词
1. 不定冠词的用法
不定冠词a (an)与数词one 同源，是“一个”的意思。a用于辅音音素前，一般读作[e]，而an则用于元音音素前，一般读做[en]。
1) 表示“一个”，意为one；指某人或某物，意为a certain。
A Mr. Ling is waiting for you.
2) 代表一类人或物。
A knife is a tool for cutting with.
Mr. Smith is an engineer.
3) 词组或成语。
a little / a few / a lot / a type of / a pile / a great many / many a / as a rule / in a hurry / in a minute / in a word / in a short while / after a while / have a cold / have a try / keep an eye on / all of a sudden
2. 定冠词的用法
定冠词the与指示代词this，that同源，有“那（这）个”的意思，但较弱，可以和一个名词连用，来表示某个或某些特定的人或东西。
1）特指双方都明白的人或物：
Take the medicine.　把药吃了。
2）上文提到过的人或事：
He bought a house.　I've been to the house.
他买了幢房子。我去过那幢房子。
3）指世上独一物二的事物：
the sun， the sky， the moon， the earth
4）单数名词连用表示一类事物，如：the dollar 美元;
the fox 狐狸；或与形容词或分词连用，表示一类人：the rich 富人; the living 生者。
5）用在序数词和形容词最高级，及形容词only， very， same等前面：
Where do you live?　I live on the second floor.　 你住在哪？我住在二层。
That's the very thing I've been looking for.　 那正是我要找的东西。
6）与复数名词连用，指整个群体：
They are the teachers of this school.指全体教师)
They are teachers of this school.　 (指部分教师)
7）表示所有，相当于物主代词，用在表示身体部位的名词前：
She caught me by the arm..　她抓住了我的手臂。
8）用在某些由普通名词构成的国家名称、机关团体、阶级、等专有名词前：
the People's Republic of China　 中华人民共和国
the United States　 美国
9）用在表示乐器的名词之前：　 She plays the piano.　她会弹钢琴。
10) 用在姓氏的复数名词之前，表示一家人：
the Greens　 格林一家人 (或格林夫妇)
11) 用在惯用语中：
in the day, in the morning (afternoon，evening),　the day after tomorrow　
the day before yesterday,　the next morning,　
in the sky (water，field，country)　
in the dark,　in the rain,　in the distance,　
in the middle (of),　in the end,
on the whole,　by the way,　go to the theatre
3. 零冠词的用法
1) 国名，人名前通常不用定冠词：England，Mary；
2）泛指的复数名词，表示一类人或事物时，可不用定冠词；
They are teachers. 他们是教师。
3）抽象名词表示一般概念时，通常不加冠词；
Failure is the mother of success.　失败乃成功之母。

4）物质名词表示一般概念时，通常不加冠词，当表示特定的意思时，需要加定冠词；
Man cannot live without water.　人离开水就无法生存。
5）在季节、月份、节日、 假日、日期、星期等表示时间的名词之前，不加冠词；
We go to school from Monday to Friday.　 我们从星期一到星期五都上课。
6）在称呼或表示官衔，职位的名词前不加冠词；
The guards took the American to General Lee.
士兵们把这个美国人送到李将军那里。
7）在三餐、球类运动和娱乐运动的名称前，不加冠词 如：have breakfast，play chess
8）当两个或两个以上名词并用时，常省去冠词；
I can't write without pen or pencil.　　没有钢笔和铅笔，我就写不了字。
9）当by 与火车等交通工具连用，表示一种方式时，中间无冠词；by bus，by train；
10）有些个体名词不用冠词；如：
school，college，prison，market，hospital，bed，table，class，town， church，court 等个体名词，直接置于介词后，表示该名词的深层含义；
go to hospital　　去医院看病
go to the hospital　 去医院 (并不是去看病，而是有其他目的)
11)不用冠词的序数词；
a. 序数词前有物主代词
b. 序数词作副词　 He came first in the race.
c. 在固定词组中　 at (the) first, first of all,　　from first to last
■Read Around the world.
Turn to page 95. Let’s go on to travel around the world by reading the passage called Population and water.
While reading, try to: cut/ the sentence into thought groups, study the predicative, darken the connectives and underline all the useful expressions. (阅读过程中，断开/意群，观察谓语构成，圈出连词，摘录短语搭配。)
Useful expressions (有用的短语搭配)
in many countries, the shortage of water, the main problems, with more and more people, less and less water, a lot of the available water, be polluted, carries disease, less available water underground, grow food, walk hours, bring water back to…, with more and more people in…, get good clean water, become a problem, in many places, a pie chart, in the year 2050, world population, 58% people, have enough water
■Close down by putting the passage into a conversation. (改写)
We are to turn the text into a conversation.
A: What is the biggest problem for many countries?
B: It is the problem of overpopulation and the shortage of water.
C: That is because with more and more people, less and less water is available.
D: And a lot of the available water is polluted or carries disease.
A: What about the underground water?
B: There is less available water underground now than there used to be.
C: That means that it will be more and more difficult to grow food.
A: In my hometown many people must walk hours to bring water back to their homes.
D: With more and more people in my city, getting good clean water is becoming a problem in many places.
C: look at the pie chart here. It shows how water might be available in the year 2050.
A: It’s hard to believe that 58% people will have enough water then.
B: And 24% people will have some water.
C: What is the worst is that 18% people will not have enough water.
A: It is time for us to take effective steps to control the population.