九年级英语第二十单元
科目 英语
年级 初三
文件 middle3 unit20.1.doc
标题 The World\'s Population
章节 第二十单元
关键词
内容
一、教法建议
【 抛砖引玉 】
单元双基学习目标
Ⅰ. 词汇学习
population , billion , India , following , grow , beginning , century . UN , at the beginning of , the more developed countries , the less developed countries , the developing countries , in the year 2000 , hour after hour , on the earth
Ⅱ. 句型结构
What\'s the population of Germany ?
By what year will the world\'s population reach 6 billion ?
I didn\'t know that China\'s population would grow so fast .
We never asked what would happen to the world .
Ⅲ. 课文学习
本单元的中心话题是当代人类最为关注的人口问题,通过学习课文了解世界人口的状况
并学习过去将来时的用法。语法重点学习过去将来时。
【 指点迷津 】
单元重点词汇点拨
1 . population 人口;人数
— What\'s the population of that city ? 那个城市的人口有多少 ?
— The city has a population of 300 , 3000 . 该市有30万人口。
The population of the city is less than / 200 , 000 . 此城的人口不到20万。
〖 点拨 〗population 作主语谓语通常用单数,但当其前面有百分数、分数修饰时,谓语用复数。have a population of 有……人口。问人口多少有 what 或者 how large 。
2 . following 接着的;以下的
He became quite well the following day . 第二天,他的身体便好了。
Please translate the following sentences into English .
3 . mouth 嘴
Open your mouth , please .
The boy filled his mouth with food .
His mouth is watering . 他在流口水。
〖 点拨 〗复数直接加 s 。have a dirty mouth 说脏话。from hand to mouth 勉强糊口。
4 . beginning 开始;开端
I\'ve read the book from beginning to end . 我已把这本书从头到尾读完了。
The beginning of the book is interesting . 这本书开头很有趣。
Good beginning is half done . 良好的开端是成功的一半。 ( 谚语 )
He came back at the beginning of the school term . 这学期开始时他回来了。
〖 点拨 〗from beginning to end 从头到尾。
5 . century 世纪;百年
The church is some centuries old . 这座教堂已有数百年的历史了。
6 . by 到……为止 ( 指时间 ) ,不迟于
I\'ll finish the work by this week . 在本周末前我将把工作完成。
He can\'t get here by 5 0\'clock . 五点钟之前他到不了这里。
This work must be finished by the end of this month .
〖 点拨 〗by the end of 到……末端为止,by the way 顺便说一下。
单元词组思维运用
1 . on earth 在地球上
Two thousand years ago , there were only 250 million people on the earth . 两千年前,地球上只有两亿五千万人。
We live on the earth , but in the future some will be able to live on the moon . 我们生活在地球上,将来有些人可能生活在月球上。
注意on earth 是“世界上;究竟”。如:
What on earth do you mean ? 你究竟是什么意思 ?
He is the greatest man on earth . 他是世界上最伟大的人。
2 . hour after hour 一小时接着一小时,不停地
If the population goes on hour after hour , it will be the biggest problem in our country . 如果人口一小时又一小时地继续增长下去,它将成为我国最大的问题。
So it goes on , hour after hour . In one day , people have to find food for over 250 , 000 mouths more . 随着一小时又一小时地过去,仅在一天内,人们就必须提供25万人吃的食物。
They worked on hour after hour and never left tired . 他们不停地工作,从不感到累。
类似词组还有:day after day 一天又一天 / year after year 一年又一年
3 . at the beginning of 在……初期;在……开头
At the beginning of the twentieth century , the world\'s population was about 1 , 700 million . 在20世纪初,世界人口大约17亿。
You can find the sentence at the beginning of this chapter . 在这一章的开头你能发现那个句子。
注意at the beginning 是“开始,开头”。如:
At the beginning he wasn\'t interested in maths . 起初他对数学不感兴趣。
4 . at the end of 在……的末尾;在……的尽头
At the end of the road you\'ll see the hospital .
At the end of his journey , he went to Shanghai . 在旅行快要结束时,他去了上海。
At the end of 1979 , he came back from Japan . 在1979年末,他从日本回来。
5 . some day 总有一天,有朝一日
Some day you will be sorry about it .
6 . faste