内容正文:
Unit 3 Language in use
一、冠词
二、数字
(一)常用词汇
population 人口 increase 增大;增长 large/small 大的/小的 grow 增长;增大 million/billion 百万/十亿 cause 引起;造成 pollution 污染 traffic 交通 noise 噪音 resource 资源 traffic jam 交通阻塞 be short of 缺乏 solve a problem解决问题 make efforts 努力 the population of... ……的人口 public service 公共服务 such as 例如 what's more 另外
(二)常用句式
常用的开头语
As we all know, now the population of China is more than 1.4 billion.
我们都知道,现在中国的人口超过14亿。
主题部分常用表达
1. A large population causes many problems. 大量的人口导致许多问题。
2. For example, clean water is becoming less and less. 例如,干净的水越来越少。
3. We are short of natural resources. 我们缺乏自然资源。
4. There is more pollution and noise. 污染和噪音更多了。
5. To solve this problem, the government should... 要解决这个问题,政府应该……
常用的结束语
1. In a word, we should make more efforts to... 总而言之,我们应该更加努力……
2. I think the situation will get better in the future. 我认为情况将来会好转的。
冠词和数字
【语法感悟】
Ⅰ. 回顾课文语法,用a, an, the填空。
1. Parkville was near Arnwick, a city with a population of 10,000,000.
2. Getting to the nearest school in Arnwick takes her an hour by bus.
3. The story of Arnwick is just a story.
4. However, it was expensive to live in the city centre, so the government built flats outside the centre.
Ⅱ. 回顾课文语法,根据汉语意思完成句子。
1. 2020年世界人口数量约为78亿。
The world's population was about 7.8 billion in 2020.
2. 2030年数量将攀升至85亿。
The number will climb to 8.5 billion in 2030.
3. 到2030年,印度将有约15亿人。
By 2030, India will have about 1.5 billion people.
4. 阿恩威克现在有1 000多万人口。
Arnwick now has a population of more than 10 million .
【语法精讲】
1. 不定冠词a和an的用法
用法
示例
表示数量,泛指同类事物中的“任何一个”,含有“一”的意思
My aunt only eats an apple for breakfast. 我姑姑早饭只吃一个苹果。
首次提到某人或某物
A girl is waiting for you at the door. She is about thirteen. 有一个女孩正在门口等你。她大约13岁。
表示“每一”的概念,相当于every
I go swimming once a week. 我每周游泳一次。
用于某些固定短语中
have a look看一看;have a good time过得愉快;a lot of许多; a few一些;几个
注意:不定冠词只用来修饰可数名词单数。a用于以辅音音素开头的单词前,an用于以元音音素开头的单词前。如 a book(一本书),an egg(一个鸡蛋),a useful tool(一件有用的工具)。
2. 定冠词the的用法
特指某人或某物
Th