Using LanguageⅠppt课件配套教案内容

高三教案

话题复习：世界与环境

Teaching Important Point 1.

Enable the Students know the background of the environment. 2.

Enable the students improving their reading skills and writing skills. 3.

Enable the students know this topic and can put forward some measures to deal with environmental problem. 4.

Improve the students’ skill on collecting useful materials from the reading texts. Teaching Methods 1.

Task-reading skill. 2.

Reading and Writing Step 1 Warming up 1. Read three pieces of news and some pictures. What do you think of all the news? 2. Watch a video of a girl’s speech. Think about why the girl criticize the adults. Step 2 Reading comprehension.

Try to get some knowledge about the current situation of our environment by doing the three passage. Passage 1

题材：极地冰雪融化

词数：277 建议阅读时间：4.5分钟

Polar-ice Meltdown Some scientists warn that ice near the Earth’s Poles may indeed be melting. This “polar meltdown” may be the first sign that the Earth is heating up. We could be in very serious trouble if this trend continues. It is estimated that a meltdown of as little as 10 percent of Antarctica’s ice would raise sea levels around the globe by 4 to 9 meters. Floods would cover low-lying regions and turn coastal cities like New York and New Orleans into real life underwater world. Scientists first predicted in the 1970s that heat trapped in the Earth’s atmosphere could cause a polar meltdown. Many now believe that human activities are turning up the heat. When we burn fossil fuels like coal and oil, we add carbon dioxide(CO₂) gas to the Earth’s atmosphere. Cutting down trees also makes CO₂levels raise because trees normally soak up CO₂to make food. Scientists say higher CO₂levels strengthen the “greenhouse effect” and could increase the Earth’s temperature. In fact, CO₂levels have risen by 30 percent since the Industrial Revolution of the

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18th and 19th centuries. Over the past three years, satellite measurements have shown a sea level rise of about a quarter inch worldwide. “If nothing is done to reduce fossil-fuel pollution and global warming, sea levels will rise even more.” says geologist Richard Alley.

But even Alley admits that a polar meltdown would take time. The ice in Antarctica and Arctic locks up nearly nine times the volume of water contained in all the world’s rivers and lakes. These are such big “ice cubes” and it would probably take thousands of years to melt them.

Another scientist Charles Bentley doesn’t think a meltdown will happen at all. “Even if warmer temperatures begin to melt polar-ice,” he says, “the excess moisture would most likely be redeposited as snow.” In other words, the melted ice would evaporate into the atmosphere, refreeze, and fall as rain and snow over the Poles. 1. What consequence of global warming is mentioned in the passage? A. More tropical storms. B. More tropical diseases. C. Changes in farm productivity. D. Coastal flooding. 2. Which of the following statements does the second paragraph support? A. CO₂in the atmosphere cannot keep the heat from escaping into space. B. The increase of CO₂gas may warm the planet and help to melt polar ice. C. Cutting down trees helps to greatly reduce CO₂levels. D. The end of the short-lived age of fossil fuels is already in sight. 3. Geologist Richard Alley most likely agrees that _______. A. the sea-level rise can be prevented by cutting back on energy-consuming activities B. the recent breaking off of ice blocks from Antarctica is just a natural part of a long-term cycle C. Antarctica temperatures have significantly changed since the Industrial Revolution D. the polar meltdown may be an accidental change of climate rather than a sign of global warming 4. Charles Bentley believes that a polar meltdown will not occur because _______. A. governments around the world are beginning to reduce CO₂levels in the air B. a melting of the polar ice cannot be achieved with the present technologies

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C. the melted ice in the polar areas would change into snow and rain over the Poles D. the sun’s heat would have no chance of being absorbed by the polar ice

5. In which paragraph does the author mention the immense quantities of polar ice? A. In the second paragraph. B. In the third paragraph. C. In the fourth paragraph. D. In the fifth paragraph.

Passage 2 题材：保护环境

词数：247 建议阅读时间：4.分钟

Think about all the things you enjoy doing outside. Do you have a huge, green field or city park close to your house where you can play baseball or soccer？

Do your parents take you swimming or camping during your summer vacation？

Maybe you and your friends just like to hang out on your street and ride bikes. Our world is so beautiful. It’s part of the reason we love to be outdoors. The blue skies, clear lakes and rivers, rich soil, and fresh air are all valuable natural resources(资源) that make up a healthy, safe environment. Everyone living on the earth needs to do his or her part to help protect these resources so our world will still be healthyand beautiful many years from now. As the population on earth continues to grow at a fast rate, it becomes harder to protect our land, air, and water from harmful pollution. The most important way people can fight pollution is to learn as much as possible about how their actions affect the environment. Then they can make wise choices that will reduce damage to the planet. Governments, scientists, businesses and industries, agriculture, environmental organizations, and individuals can all help to control pollution. Pollution management, which specifically involves(涉及)reducing and cleaning up pollution, is expected to be one of the fastest growing industries of the future. The government serves an important role in managing pollution by passing laws and setting guidelines(指导方针)to set and increase pollution standards. 6. What can be the best title of the passage？

(please answer within 10 words) _____________________________________________________________________

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7. What does the first paragraph mainly tell？

(please answer within 10 words) _____________________________________________________________________ 8. Translate the underlined sentence into Chinese. _____________________________________________________________________ 9. According to the passage, what is pollution management？

(Please answer within 10 words) _____________________________________________________________________ 10. After reading the passage, what do you think we senior high school students can help to reduce pollution？

_____________________________________________________________________ Passage 3 题材：5R规则

词数：290 建议阅读时间：6分钟

It's important to learn how we can protect the environment．Here are 5R rules for us．

Reduce(减少)：If you want to reduce waste, you should use things more cleverly．A large number of trees are being cut down to make paper．If everyone uses paper carelessly, soon we would not have any trees left．Other things are also being wasted, and people don't know what to do with the waste in big cities．So it is necessary to reduce the amount(数量)of waste we produce．

Reuse：You should always think of reusing things before throwing them out．For example, give the clothes you do not use or the ones that are too small to the poor．In a family, you may pass on such clothes to younger brothers or sisters．

Recycle：Bottles, cans and paper can easily be recycled．By doing so we save lots of time and money．For example, coke cans are sent to a factory, where they are smashed flat and melted．The metal can be used to make new coke cans．

Recover：When you buy a box of apples, there may be a few rotten(腐烂的)ones．You have two choices：one is to throw the apples away; the second is to throw the rotten ones and keep the good ones．In this way, you are recovering the eatable parts of food．

Repair：If one of the legs of your table is broken, you should repair it．If you want to buy something newer and better, it is better for you to sell the old thing, or give it to people who can use it after repairing it．Learn the rules to protect our environment．Let's try our best to make the

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earth cleaner and more beautiful．

11. The “Reduce” rule mainly asks us

. A. to use things more wisely

B. to cut down lots of trees C, to use a lot of paper

D. to throw away your old clothes 12. What should you think of before you throw things out? A. Buying new ones

B. Putting them asides

C, Reusing

D. Eating them 13. The “Recover” rule mainly asks us

A. to keep waste things

B. to cover waste things with earth C, to keep the useful parts

D. to throw everything away 14. What is the first suggestion that you should do with broken items? A. To throw them away

B. To repair them.

C, To sell them

D. To put them in a cupboard. Step3. Collect some useful structures from the three passages.

Step 4 话题解读

句型及短文框架1（全球变暖）

句型及短文框架2（环境保护）

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Step 5. Writing 假设你是李华，你所居住的城市最近受雾霾困扰，请你给市长先生写一封信，请求市长关注空气污染问题，简要分析空气污染的原因，并提出自己的建议。

Dear Mr. Mayor,

Yours sincerely,

Li Hua Step 6. Practice 假定你是李华，你的美国朋友Peter想了解汕头近年来在创建“文明城市”的一些情况，请你给他写一封信，介绍汕头“创文”以来所取得的成就及你对“创文”的看法，并欢迎他有空到汕头来看看。

注意:

1. 词数100左右:

2. 可适当增加细节, 以使行文连贯。

【参考词汇】文明城市a civilized city

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