12.1 九年级上册：Unit 1 Topic 2SectionCD 知识梳理与挖空练

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Unit 1 Topic 2SectionCD

一．单词学习

1. social 社会的;社交的

2. supply 提供供应 n.供应量;补给;供应

3. natural 天然的;天生的

4. worse 更差的,更的，更差,更糟

5. so far 到目前为止

6. government 政府,内阁

7. take measures to do sth.采取措施做某事

8. thanks to sb./sth.幸亏,由于

9. paragraph 段;段落

10. opportunity 机会,时机

11. newborn 新生的初生的

12. percent 百分之……

13. offer 提供(东西或机会);主动提出

14. surround 围绕,环绕

15. garbage(生活)垃圾,废垃圾场

16. discourage 阻拦,阻止;使灰心

17. local 当地的,本地的

18. capital 首都;资本

19. huge 巨大的,极多的

20. market 集市,市场

21. transportation 运输

22. excellent 优秀的,杰出的

二．课文学习

In 2010, the world's population was about 6.8 billion. More than three billion people live in Asia now. That's

almost half of the world's population. China has the largest population in the world, and about one fifth of the

people in the world live in China. Because of the large population, there is less living space for each family. And it

is difficult for lots of people to find jobs. At the same time, the large population has caused many other difficulties

for the whole nation. For example, it is hard for China to supply energy and water to satisfy people's daily needs.

Most cities are more crowded than before, and the traffic is much heavier. Natural environments are becoming

worse and worse. The large population has been a serious problem.

So far, our government has taken many measures to control the population. One is known as the one-child-

policy. It has worked well in controlling China's population. Thanks to the policy China is developing quickly and

people's living conditions are improving rapidly. However, the population problem is still serious in China. We still

have a long way to go.

三．重点解析

1. In 2010, the world’s population was about 6.8 billion. More than three billion people live in Asia now.

(1) about 用在数字之前表“大约”= around

(2) less than 比……少，修饰不可数名词（little 的比较级）、形容词、副词。

fewer than 比……少，只用于修饰可数名词（few 的比较级）。

more than 比……多，用于可数名词和不可数名词（many 和much 的比较级）。

2. That’s almost half of the world’s population.

(1) almost 几乎

(2) half of /half

如果是人称代词,则只能用 half of,而且人称代词要用宾格；如 half of them

在谈论距离、长度和数量时,只能用 half,一般不用 half of；如 half a mile

half, half of 后面所接的名词前,必须有表示限定含义的冠词、指示代词、物主代词等等，如 half of my

friends.

注意： half of + 中心词(名、代) + 谓语动词

3. China has the largest population in the world, and about one fifth of the people in the world live in China.

英语中分数的表达法口诀：子基母序，子＞1，母加 s.

例如：三分之一 one third; 五分之一 one fifth;

三分之三 three thirds; 五分之四 four fifths

注意: 四分之一也可说成 a quarter; 二分之一说成 a half

拓展：分数 + of + 名词 + 谓语动词

4. Because of the large population, there is less living space for each family.

living space 生活空间

5. At the same time, the large population has caused many other difficulties for the whole nation.

(1) at the same time 同时

名代单，谓单

名代复，谓复

名代单，谓单

名代复，谓复

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