The worlds population（通用2篇）
The worlds population 篇1
初三 unit 13 the world's population lesson 52教案
period: the fourth period
content: lesson 52
properties: recorder; overhead projector.
teaching objectives:
1. practise listening.
2. do the writing according to the diagram.
teaching procedures:
i. showing the teaching aims
ii. revision
choose some useful sentences from the students' homework and read them to class, then do more oral practice using the future -in-the- past tense.
iii. leading in
say: today we're going to hear about different languages in the world, and have the students look at the exercise 1 in the workbook, read all the questions first, then read the numbers aloud. try to guess the answers before listening.
iv. listening
listen to the tape and do exercises. the answers are: 1. a 2. b 3. a 4. c 5. b 6. b7.c 8.a
check the answers with the whole class.
v. practice
ask the students to look at the diagram in part 2. discuss it with the students, let them understand the information. ask the students to do the exercise in pairs. then check the answers orally. finally get them to write down the whole passage. pay attention to the first sentence, it means the people will not be able to find room to stand in if the population is too large. the answers are: small, slowly, quickly, faster, more, smaller, fewer, healthier
vi. look and ask
ask the students to look at the list of cards and let the students ask and answer in pairs. for example: a: how much is the car? or what’s the price of the car? or how much does the car cost? b: it’s… then discuss about why your car is the best.
vii. presentation
ask the students: do you like travelling in your holiday, let the students discuss. then tell the students we'll learn something about sam, ask the questions:
1. which countries would he travel to for holiday?
2. was his plan very good?
listen to the tape and answer the questions. play the tape for the students to listen and repeat. explain some language points:
1. travel to…
last year sam travelled to beijing.
2. become interested in:
he became interested in science when he was eight years old.
3. be busy doing something:
the students are busy reading english now.
viii. checkpoint 13
go through checkpoint 13 and make sure the students can understand the grammar and useful expressions.
ix. workbook
do exercises 2 and 3, ask the students to do them in pairs.
do exercise 4. the answers are: 1. would go, would get 2 would be, would be, said, would be, received 3 decided, didn't know, would teach, said, would leave, wouldn't be 4 was, found, would use, down loaded, made
exercises in class
rewrite the sentences.
1. what’s the population of the world?
_________ _________ people _________ _________ in the world?
2. my home is twenty minutes on foot.
it __________________ 20 minutes to go home.
3. i forgot everything, so did jim.
________i ________ jim could ________ everything.
4. he was late for school, i was late, too.
he was late for school, i ________ ________ ________, ________.
x. homework
1. revise the whole unit.
2. use the useful expressions to make up a story.
3. finish off the exercises in the workbook.
The worlds population 篇2
教学目标
教学目标与要点
1.掌握且能熟练运用有关人口的问答：What's the population of…? It's about…
2.能快速、正确地表达任何一个数字，且能书写正确。
3.掌握本单元的词汇和短语的用法，特别是hour after hour, prefer to…rather than…, be busy doing, faster and faster等的用法。
4.学习过去将来时态的构成和用法，掌握它的否定式、肯定式、疑问式及其简略答语，及它用于宾语从句中与主句时态的关系。
5.认真学习"Standing room only"，明白控制人口迅速增长的重要性，设想一下有哪些方案可以缓解人口的快速增长。
本单元词组与日常交际用语
（一）本单元短语及词组
slow down 下降；放慢
hour after hour 一小时又一小时，连续
multiply…by… ……乘以……
at the beginning of… 起；开始
more and more 越来越…
prefer to…rather than… 宁愿……而不愿
rather than 宁可；是……而不……
bag one's pardon 请原谅；对不起
be busy doing 忙着做……
for the size of the country 相对这个国家的容量
the developed countries 发达国家
the more developed countries 比较发达国家
the developing countries 发展中国家
the less developed countries 不太发达国家
slow down the population increase？ 下降人口增长
standing room only 只有立足之地
produce …for… 为……生产
grow faster and faster 增长的越来越快
one square metres of space 一平方米的地方
at the beginning of the 21st century 在21世纪初
be worth …… 值 ……
the Rolls Royce 劳斯莱斯牌轿车
（二）日常交际英语
购物shopping
How much does… cost …?
It can cost as little as … yuan and as much as … yuan.
It can cost ….
It costs ….
It's worth ….
You can buy ….
表示同意和不同意Expressing agreement and disagreement
I don't agree with ….
请求Requests
I wasn't sure whether….
I wonder if ….
其他
What's the population of …?
教学建议一
教材内容分析
本单元的中心问题是当代人们最关注的问题之 — 人口问题。课文“Standing room only”介绍了世界人口迅速增长的状况，所带来的一系列问题，如粮食紧缺、就业困难、住房紧张等，说明控制人口增长的重要性和必要性，以雄辩的事实对同学们进行人口教育，使他们进一步认识到中国实行计划生育政策的必要性和深远意义。本单元学习了数词的表示法和读法，过去将来时态的构成和基本用法，询问人口的句型。英语中就人口提问只用what，不用 how many或 how much。本单元还学习了，常用词语和表示位置移动的动词可用过去进行时表示过去将来时态。
本单元重点例句及相关知识讲解
1. 3，333，333，333三十三亿三千三百三十三万三千三百三十三。
读写多位数时要注意以下几点：
（1）1，000以上的数字，要用计数退点“，”。从个位开始，每隔三位加一个逗点。第一个逗点前是thousand，第二个逗点前是million.第三个逗点前是billion（美国英语说法）或thousand million（英国英语说法）。
（2）分段之后，每段都成了l～999之间的数了，读写时在十位（个位）数与百位数之间加and。
（3）英语中无单独表示“万”和“亿”的量词，故用ten thousand表示“一万”，one hundred thousand 表示“十万”，twenty million表示“二千万”，three hundred million表示“三亿”。
因此，上面的数字就读成：three billion three hundred and thirty－three million three hundred and thirty-three thousand three hundred and thirty-three。
2.What’s the population of Germany? 德国的人口是多少？
population是个集合名词，意思是“人口；人数”，常用来指人口的总称，在日常使用时，必须注意以下几种用法：
（1）population是一个集合名词，在句中作主语时，谓语动词多用单数形式。如：
The population of Germany is about 81,000,000. 德国大约有八千一百万人口。
The world's population is growing faster and faster. 世界人口增长越来越快。
注：如果population与分数或百分数连用时，谓语动词多用复数形式。如：
Three fifths of the population in our town are farmers. 我们镇五分之三的人是农民。
（2）表示“……的人口”可用the population of +地名，也可用the population in +地名，作主语中心词时，谓语动词用单数形式。如：
The population of Canada is 28,100,000. 加拿大人口是二千八百一十万。
（3）表示某国、某城市有多少人口时，还可用… have/has a population of…结构。如：
The city has a population of 50,000. 那座城市有五万人。
注：people常用于表示具体的人数，虽然people不加"s"，但谓语动词常用复数。如：
How many people are there in your family? 你家有几口人？
（4）由于population是不可数名词，因此不用How many也不用How much进行提问，应用What / How large。如：
1）What's the population of China? 中国有多少人口？
2）澳大利亚有多少人？
误：How many is the population of Australia?
正：How large is the population of Australia?
（5）说明人口或人数的“多”或“少”时，不用many/few/much/little修饰，而用large, big或small, thin修饰。如：
Dalian has a large population. 大连人口很多。Which country has the smallest population Canada, the USA or Australia? 加拿大、美国、澳大利亚哪个国家的人口最少？
3. I wonder if that’s a lot of people for the size of the country. 我想知道这个国家能否容的下这么多人。
句中wonder的意思是want to know，常接if或whether引导的宾语从句。如：
I wonder if it is true. 我想知道这是不是真的。
I wonder whether Tom will come. 我不晓得汤姆来不来。
句中size 是名词，意思是“容量；尺寸；大小；面积”。如：
It was about the size of a duck’s egg. 其大小约如鸭蛋。
His shoes are Size 10. 他的鞋是十码的。
The earth is 49 times the size of the moon. 地球大约是月球的49倍。
4. Multiply this by 365. 用365来乘它（370，000）
（1）multiply A by B 用B乘A。
例：6 multiplied by 5 is 30. (6×5=30)6乘5等于30。
（2）“乘”的另外一种表达法是times。“除”在英语中用divide表示。
例：6 times 5 is (are) 30. 30 divided by 5 is 6.
(6×5=30) 6乘5等于30。(30 ÷ 5=6) 30除以等于6。
（3）句中by是介词，意思是“相差”指程度。如：
He is taller than I by a head. 他比我高一个头。
“……+by+数字或倍数+……”在本句型中有比较级出现或有表示增减意义的动词或分词出现时，by后表示的都是净增减的数或增加的倍数。如：
A is by 2 inches longer than B. A比B长二吋。
300 increased by 200 is 500. 300加200等于500。
900 decreased by 100 is 800. 900减100等于800。
注意如果句中用go up（上升）代替increase时，就不能用by。
5.The world’s population is growing faster and faster.世界人口增长得越来越快。
the world’s population还可以说成：the population of the world/the world population这三种说法都译为“世界人口”，只是表达形式不同。第一种说法是名词所有格作定语；第二种说法是“of属格”作定语；第三种说法是名词作定语。注意，如说“中国人口”，应说：the population of China或the China’s population。但不能用表示“某国”的形容词作定语，即不能说the Chinese population，因为形容词Chinese（中国的）French（法国的）German（德国的）等不表示所属关系。
形容词或副词的比较级连用表示“越来越……”，例如：
English is becoming more and more important.She studies English harder and harder.Her score is becoming better and better.英语变得越来越重要。她学习英语越来越用功。她的成绩越来越好
6.People say that by the year 2010, it may be seven billion.
人们认为到2010年，人口将达70亿。
（1） 句中by the year 2010是“到2010年”的意思。相关 by的短语有：by the end of…到……末为止，只用来表示时间，常与完成时态连用，也可用于将来时态。与之相关的短语有：
at the end of在……末，在……末端（尽头），可以表示时间，也可表示地点，常与过去时态或将来时态连用。
to the end到（某一）终点为止，可表示时间，也可表示地点，指时间常用till代替to。
in the end最终、终于，相当于at last或 finally。
【例】1）We had learned eleven English songs by the end of last term.We had an English songs exam at the end of last month.He stayed there till(to) the end of last month.
到上学期末，我们已学了十一首英语歌曲。上月末我们进行了一场英语歌考试。他在那儿一直呆到上月月底。
2）You can find the post office at the end of this street.Go down that street to the end and you will find the hospital.
在这条街的尽头，你会找到邮局的。沿着那条街走到底，你会找到那所医院的。
（2）by还可表达下列意思：
by在……旁边
The writer often saw an old man fish by the lake. 作者经常看见一位老者在湖边钓鱼。
by使用……工具
Miss Smith goes to work by car but she is sometimes late. Smith小姐开车上班但有时她还是迟到。
by：由……，被……，表示被动关系。
This book was written by my father in 1998.这本书是由我父亲在于1998年写的。
by the end of…到……底为止，它不是指在某个时间点，而是指某一点时间之前或到某一点时间为止是一种什么情况。强调的是状态或结果。其后接表示时间的名词并与之构成时间状语。如：
He will be 16 years old by the end of next month. 他到下个月底就16岁了。
7.That means that in about 600 years, there will be standing room only on the earth.这意味着大约600年后，地球上将只有立足之地。
（1）副词only一般放在它所修饰的词或短语之前。否则，就会引起句意的不同。
例：Only Tom drives the new car on Sunday.只有Tom在周日开新车。
Tom only drives the new car on Sunday.周日Tom只开开新车，而不做别的事。
Tom drives only the new car on Sunday.Tom在周日只开新的车子。
Tom drives the new car only Sunday.Tom只有在周日才开新车。
（2）standing在这里是动名词，“站的地方；立足之地”。作room的定语，整个短语相当于room for standing only. -ing形式修饰名词表示用途的情况还有：
waiting room 候车室
walking stick 拐棍，手杖
fishing pole 钓鱼竿
（3）此处的room表示“空间”，是个不可数名词，相当于space。常用于“There be句型”和“make room for sb.”，“take up much/little room”等短语中。
例：This table takes up too much room of his bedroom.
这张桌子占了他卧室里太多的空间（地方）。
本句中有两个that，但作用意思完全不同。前者为指示代词，指代上文中所讲人口增长的严峻形势，作主语，意为“这种情况”；后者为连词，引导means后的宾语从句，无词义。
（4）in/after/later这三个词均可表示“在……之后”的意思，其用法及区别是：
in作为介词，后跟一段时间，表示从现在算起的“一段时间之后”，常用于一般将来时态。例如：
l）I’ll come back in a minute.我一会儿就回来。
2）What will happen in a hundred years？100年后会发生什么事呢？
after也是介词，表示从过去某时起的若干时间之后，谓语动词用过去时，不可用于将来时。但是，在表示某一具体时间或某一具体事件之后，则用在将来时或过去时中。例如：
1）He came back after two years.他两年后回来了。
2）After three days Wang Hai found his bike.三天后王海找到了他的自行车。
3）After the meeting, we’ll discuss it.会议后，我们将讨论这件事。
4）We will get there after two o’clock.两点钟后，我们将到那里。
later是副词，在句中作状语，既能以过去某个时间为基准，也能以现在为基准，因此可用于一般过去时态或一般将来时态。例如：
1）Later, he was interested in science.后来，他对自然科学发生了兴趣。
2）The radio says the sun will come out later.广播说太阳过一会儿就会出来。
注意：“一段时间 + later”是副词词组，表示“若干时间以后”，有两种用法：
① 用于过去时态，表示“从过去某一时间算起，过若干时间后”，与“after+段时间”意思相同。例如：Half an hour later she woke up and began to cry.半个小时后她醒了，开始哭起来。
② 用于将来时态，表示“从将来的某一时间算起，过若干时间后”。例如：He will go there on May 1, and will go there again a few days later.五月一日他将到那儿，几天后他还要再去那儿。
8.I don't agree with you two.我不同意你们两人（的观点）。
句中agree是“同意；取得一致意见”的意思。agree作及物动词用时，后面通常跟名词、不定式或that引起的从句作宾语。其可以单独使用，也可以和介词to，with，on等连用，agree on常用在被动结构中，以事物作主语时，表示“（某事）是大家都同意的”意思，有时on也可以省略。
【例】
（1）Can we agree the price 我们能不能商定一个价格？
（2）I agree that your suggestion is quite good.
我认为你的建议非常好。
（3）I really can't agree with you.
我实在不能同意你的意见。
（4）We agreed on the date for the meeting.
我们对开会的日期取得了一致的意见。
（5）After a short time, the program was agreed (on).
过了一会儿，这项计划大家都同意了。
（6）He has agreed to our plan for the holiday.
他已经同意我们的假期计划。
9. prefer v. 宁愿，更喜欢
1）跟名词或代词。例如：
Southerners prefer rice and northerners foods made from flour.
南方人比较爱吃米饭，北方人比较爱吃面食。
They prefer new works that sing of their life today. I prefer the view taken by Xiao Yang who like the old songs.This construction is much to be preferred.
他们更喜欢歌颂他们今天生活的新作品。我倾向于小杨的喜欢老歌的意见。这种结构更好一些。
2）跟不定式。例如：
I prefer to walk there.我宁愿走路去。
But people prefer to order their dishes if they have the time.
但人们更愿意点菜，如果有时间的话。
At the moment they preferred not to talk about this question.
在这个时刻，他宁愿不谈这个问题。
We should have preferred to leave on the 8th, but we didn’t because we had to wait for another classmate.
我们本来更愿意在八号走的，但没有成功，因为我们得等另外一个同学。
3）跟V+ ing结构。例如：
I prefer standing.我情愿站着。
He preferred spending his spare time doing some serious reading.
他比较喜欢把业余时间用来认真读点书。
So you prefer living in the suburbs?
这么说，你是更愿意住郊区了？
He preferred speaking without referring to his notes.
他喜欢不看稿子作报告。
4）跟带不定式的复合结构。例如：
I should have preferred him to do it in a different way.
我倒愿意他用另一种办法办。
They preferred her not to go with them.
他们宁愿她不跟他们去。
The committee would prefer the matter to be discussed at the next morning.
委员们希望这个问题下次会议再讨论。
5）跟从句。例如：
He preferred, of course, such activities should cease.
他当时情愿这种活动不再继续下去。
She preferred that we should have the discussion right after the lecture.
她更愿意我们一听完课就讨论。
I would have preferred that we do it some other way.
我倒愿意我们采取另一种做法。
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