中考英语复习：话题十 自然与环境 课件(共21张PPT).ppt

1、话题十 自然与环境,话题朗读,实战演练,首页,末页,Everybody knows that there is a serious problem of water pollution on the earth. Yes, water pollution is increasing. Look! The water in the river is getting dirtier and dirtier. Most of fish in the water have died, and we cant swim in the water. My grandfather says, when he

2、 was very young, the water in the river was very clean. He often swam in the river with his friends. That was before, but now we cant see such clean rivers. Lets protect the water from pollution because we cant live without water. The water is really important to us all.,首页,末页,首页,末页,1. 阳光 _ 2. 垃圾 _

3、3. 浪费 _ 4. 森林 _ 5. 大自然 _ 6. 能源 _ 7. 环境 _ 8. 地球 _ 9. 保护 _ 10. 海洋 _ 11. 季节 _ 12. 污染 _ 13. 纸张 _ 14. 植物 _ 15. 树 _ 16. 空气 _ 17. 工厂 _ 18. 人类 _ 19. 回收利用 _ 20. 动物 _ 21. save _ 22. endangered _ 23. kill _ 24. earthquake _,一、重点单词英汉互译,sunshine,首页,末页,rubbish,waste,forest,nature,energy,environment,earth,protect/

4、 protection,ocean/ sea,season,pollution/ pollute,paper,plant,tree,air,factory,human,recycle,animal,救/ 救助,濒危的,杀死,地震,1. 扔掉 _ 2. 吸入 _ 3. 砍倒 _ 4. 关掉 _ 5. 付出代价 _ 6. take action _ 7. be in (great) danger _ 8. run out _,二、重点短语英汉互译,首页,末页,throw away,take in,cut down,turn off,pay for,采取行动,处于(极大)危险之中,用完/ 耗尽,空气

5、污染变得越来越严重了。 _ 2. 树能吸收有害的气体,净化空气。 _ 3. 我们应该采取行动保护环境。 _ 4. 许多野生动物正处于极大的危险中。 _ 5. 不要到处乱扔垃圾。 _,三、重点句型,The air pollution is becoming more and more serious.,首页,末页,Trees can take in harmful gases and make the air clean.,We should take action to protect the environment.,Many wild animals are in great danger

6、.,Dont throw away rubbish everywhere.,难易度: There are millions of stars in our sky. If you look at the sky on a clear night, it is possible to see about 3,000 stars. They are small, but they are really very big hot balls of burning gas. Some of them are huge, but others are much smaller. The biggest

7、stars are very bright, but they only live for a short time. Every day new stars are born and old stars die. All the stars are very far away. Most of the stars are thousands of light years away from the earth. Do you know what a light year is? Nothing in the world travels faster than light. It travel

8、s 300,000 kilometers a second. One light year is the distance that,四、阅读理解,首页,末页,light travels in one year. Hundreds of years ago, people used stars, like the North Star, to know which direction to travel in. Today you can still see that star. But nobody can deny, the sun is the most important star t

9、o human beings. At night you can see many stars, but in day-time you can only see one starthe sun. The sun is much nearer to us than any other star. That is why it looks like the biggest and brightest of all the stars. The distance of the sun from the earth is as much as 150 million kilometers. The

10、sun is so much hotter than earth. The surfaces temperature of the sun is about 6,000. The energy from the sun supports,首页,末页,almost all life on earth and drives the earths climate and weather. Thanks to the sun, we human beings can enjoy this beautiful world. ( )1. The stars in the sky _. are all ve

11、ry huge B. will never die C. are all very far away from the earth D. cant be seen ( )2. People use the word “light year” to describe _. the size B. the distance C. the position D. the weight,首页,末页,C,B,( )3. What does the underlined word climate probably mean in Chinese? A. 温度 B. 密度 C. 容积 D. 气候 ( )4.

12、 Which of the following is NOT true according to the passage? A. Light travels 300,000 kilometers a second. B. In the past time people used stars to know the direction. C. The surfaces temperature of the sun is about 5,000益. D. People cant live without the sun.,首页,末页,D,C,( )5. The best title of this

13、 passage is . The Stars and the Sun B. The Distance of the Stars C. The Usage of the Sun D. The Size of the Sun,首页,末页,A,难易度: A. 信息归纳 请阅读下面一篇关于水资源的文章,根据所提供的信息,完成下面表格。 Water is the most important of all the things we eat and drink. The human body can go without food for a long time, yet two or three d

14、ays without water can usually make people die. Most people drink when they are thirsty, but we often need more water, especially if we have been taking exercise. Our body is mostly water about 67%-75%. People need about five to seven liters,五、读写综合,首页,末页,of water every day. If we dont have enough, we

15、ll feel thirsty and even get ill. So, you know, how important water is to us all. But now the world will be thirsty for water. About 97% of water on the earth is sea water, or salt water. Man can only drink or use the other 3% of the fresh water which comes from rivers, lakes and underground. On the

16、 other hand, because the number of people in the world is becoming larger and larger, more and more fresh water is needed. So water shortage becomes a big problem. How can we work out this problem? Scientists have found some ways to turn salt water into fresh water.,首页,末页,One important way is to boi

17、l sea water with high heat until vapor(蒸汽) rises, leaving the salt. In this way, a lot of fresh water can be made quickly. But heating is not the only way to get fresh water. Other ways are tried. For example, digging deep wells, keeping rain water and preventing rivers from being polluted. Which wa

18、y is the best? To get the most fresh water for the least money is the best.,首页,末页,首页,末页,Information Card,about five to seven liters,feeling thirsty and even getting ill,rivers, lakes and underground,首页,末页,Information Card,water shortage,to boil sea water with high heat until vapor rises,B. 书面表达 淡水在我

19、们生活中的作用是十分重要的。面对淡水资源的紧缺,你认为该怎么做? 请你写一篇英语短文,谈谈你的看法。内容包括: 1. 淡水资源紧缺的原因(如:人口数量的增多、水污染); 2. 人类应如何解决淡水资源紧缺的问题(2 点)。 作文要求: 1. 不能照抄原文;不得在作文中出现学校的真实名称和学生的真实姓名。 2. 语句连贯,词数 80 个左右。作文的开头已经给出,不计入总词数。 参考词汇:population 人口;rapidly 快速地;poisonous 有毒的,首页,末页,Many people believe that fresh water in the world will never

20、be used up._ _,首页,末页,But in fact, the earth is short of fresh water. There are some reasons for it. On one hand, the world population is growing rapidly, so enough fresh water is needed. On the other hand, poisonous gases and water from factories cause the pollution of water. To work out this problem, first, we should pass strict laws to control any action of wasting and polluting water. Second, scientists must work even harder to find a better way to turn salt water into fresh water. Last but not least, we can save water in,_