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高中英语Unit22《Lesson1》课件北师大版选修8


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Lesson 1 Global Lesson 1Global Global Warming Global WarmingApprec

iation of a of a film trailerWords previewconsensus beyond claim n. 一致的意见 一致的意见一致的意见 一致的意见 prep. 超出 超出超出 超出 vt. 声称 声称声称 声称 claim relevant ray

bounce

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pin vt. 声称 声称声称 声称 adj. 有关的 有关的有关的 有关的 n. 光线 光线光线 光线 vi. 反弹 反弹反弹 反弹 vt. 固定 固定固定 固定agriculture coincidence condemnWords previewn.

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农业 农业农业 农业 n. 巧合 巧合巧合 巧合 vt. 宣判死刑 宣判死刑宣判死刑 宣判死刑,注定毁灭 注定毁灭注定毁灭 注定毁灭 condemn drought federal reservation sacrifice vt. 宣判死刑 宣判死刑宣判死刑 宣判死刑,注定毁灭

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注定毁灭注定毁灭 注定毁灭 n. 旱灾 旱灾旱灾 旱灾 adj. 联邦的 联邦的联邦的 联邦的 n. 保留 保留保留 保留,存疑 存疑存疑 存疑 vt., vi. 牺牲 牺牲牺牲 牺牲,献出 献出献出 献出advocate

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recycle substituteWords previewvt. 主张 主张主张 主张,提倡 提倡提倡 提倡 vt. 回收利用 回收利用回收利用 回收利用 n. 代替品 代替品代替品 代替品,代用品 代用品代用品 代用品 substitute threaten pancake hurricane

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n. 代替品 代替品代替品 代替品,代用品 代用品代用品 代用品 vt. 威胁 威胁威胁 威胁 n. 薄煎饼 薄煎饼薄煎饼 薄煎饼 n. 飓风 飓风飓风 飓风Expressions preview beyond one’s control look ahead 超出 超出超出

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超出??的控制 的控制的控制 的控制, ,, , 不受 不受不受 不受??的控制 的控制的控制 的控制 展望未来 展望未来展望未来 展望未来 look ahead refer to in turn lead to take action ahead of

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指 指指 指,意即 意即意即 意即 依次 依次依次 依次 引起 引起引起 引起,导致 导致导致 导致 采取行动 采取行动采取行动 采取行动 在 在在

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在??前面 前面前面 前面Look at the pictures and what do you know about global warming. The greenhouse effect is the rise in temperature that the Earth experiences because certain gases in the atmosphere (water vapor, carbon dioxide, nitrous oxide, and methane, for example) trap energy and methane, for example) trap energy from the sun. Without these gases, heat would escape back into space and Earth’s average temperature would be about 60oF colder. Because of how they warm our world, these gases are referred to as greenhouse gases. Without this greenhouse heating, the Earth's average temperature would be only about -73 C (-100 F); even the oceans would be frozen under such

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conditions, such as the Moon and the Mars. Mars.

MarsMarsMoonMoonSome greenhouse gases occur naturally in the atmosphere, while others result from human activities. Naturally occurring greenhouse gases include water vapor, greenhouse gases include water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Certain human activities, however, add to the levels of most of these naturally occurring gases .Owing to the rise in atmospheric carbon dioxide caused by modern industrial societies' widespread combustion of fossil fuels (coal, oil, and natural gas), the greenhouse effect on Earth may be intensified and long-term be intensified and long-term

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climatic changes may result. Which countries do you think contribute more to global warning? a) developed countries b) developing countries more industry and technologyWhat effect will global warming have on the sea and the living things in the sea?What effect will global warming have on the sea and the living things in the sea?What will happen with global warming?Will global warming affect the life of North Polar Bear?What will happen to penguins because of global warming?Read the text and answer these questions. 1) What is global warming? Global warming refers to an average increase in the Earth’s temperature that, in turn, leads to climate change. in turn, leads to climate change. 2) What human activities are causing global warming?

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Industry, agriculture, the cutting down of forests, the increase in transport and the burning of fuels are causing global warming. 3) By how much has the global average temperature increased in the last 100 years? By 1oF (One degree Fahrenheit) 4) Are greenhouse gases necessary for life on Earth? Yes, they are. Because they trap heat from the sun in the Earth’s atmosphere. Otherwise the Earth would be cold and unsuitable for life.5) How can we help solve the problem of global warming? We can make small changes like taking public transport, recycling, using low-flow shower heads, buying using low-flow shower heads, buying

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light bulbs that use less energy, using recycled paper and switching off the lights when we leave a room.6) What are the wouldbe consequences of global warming? It will cause more frequent flooding, heat waves and droughts. And serious diseases will spread and industries diseases will spread and industries that rely on nature such as fishing will be badly affected. It will cause the polar ice to melt, raising sea levels, and flooding many islands and cities.Taking public transport like busesTaking public transport like buses can reduce greenhouse gas emissions.can reduce greenhouse gas emissions.And taking train can also help a And taking train can also help a reduction of greenhouse gas. reduction of greenhouse gas. The recycling symbol Recycled productsRecycled productsyour paper could become part of a

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road or race-trackusing lowusing low--flow shower headsflow shower heads replacereplace withwith buying energybuying energy-efficient light bulbsefficient light bulbsLanguage pointsLanguage points1. Scientists have reported that human beings are causing changes in the Earth’s climate---something Earth’s climate--something _________ seen as _________________.previously beyond our controlbeyond 在那边 在那边在那边 在那边/超出 超出超出 超出??的范围 的范围的范围 的范围 This book on literature is beyond our reach. our reach.

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This bicycle is beyond repair.2. They claim that gases pumped into the Earth’s atmosphere by the factories and vehicleshave beenspeeding upthe process of global warming and process of global warming and affectingour climate. What is the function of the underlined part “pumped?vehicles”?It is used asattributive(定语 定语定语 定语). speed up 反义反义 反义: slow down affecthave a bad effect on sth. 3. Global warming ________ an average increase in the Earth’s temperature that, in turn, _______ climate change. 反义

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refers to leads to1) refer to 提到 提到提到 提到,谈到 谈到谈到 谈到 Don’t worry. I don’t think the manager referred to you.manager referred to you. Promise me not to refer to the matter again.2) (1) 通向 通向通向 通向 This road leads to the library. (2) lead to=result in=bring about The fight led to their divorce.4. increase?by? 增加了 增加了增加了 增加了? lead to

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increase?to? 增加到 增加到增加到 增加到? The temperature of the room is increased by 12oC, that is, the temperature of the room is increased temperature of the room is increased to 29oC. Cf : reduce?by? / reduce?to? rise by / rise to 5. insist: (1)urge in a forcible manner坚决主 坚决主坚决主 坚决主 张 张张 张, 坚决要求

坚决要求坚决要求 坚决要求 e.g. HeinsistedI (should) go with

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them. =He insisted on my going with them. 6. release: (1) allow to go; set free释放 释放释放 释放 When coal is burning, it will releasea lot of carbon dioxide into the atmosphere. (2)allow (news/films) to be known or published发布 发布发布 发布,发行 发行发行 发行 The news has been released. (1)the property of things which can be measured, e.g. size, weight, number. 物质的属性 7. quantity:

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物质的属性物质的属性 物质的属性, 量 量量 量 e.g. I prefer quality to quantity.(2) amount, sum or number数量 数量数量 数量 e.g. We’ve had quantitiesof rain this summer. 今年夏天雨下得很多 今年夏天雨下得很多今年夏天雨下得很多 今年夏天雨下得很多。 。。 。今年夏天雨下得很多 今年夏天雨下得很多今年夏天雨下得很多 今年夏天雨下得很多。 。。

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。 He buys things in quantity / in large quantities. 他总是大宗采购东西 他总是大宗采购东西他总是大宗采购东西 他总是大宗采购东西。 。。 。8. pin sth. on somebody 把某事归罪于某人 把某事归罪于某人把某事归罪于某人 把某事归罪于某人 Tom is innocent. They just tried to pin the blame on him. 汤姆是无辜的 汤姆是无辜的汤姆是无辜的 汤姆是无辜的,他们只是想把责任 他们只是想把责任他们只是想把责任 他们只是想把责任 推给他

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推给他推给他 推给他。 。。 。 to pin the blame on him.9. add up 加起来 加起来加起来 加起来= == #NAME? up to =total up to 加起来为 加起来为加起来为 加起来为?? He added upthe numbers and the numbers added up to 233.His honesty isbeyond question. 他的忠诚是 他的忠诚是他的忠诚是 他的忠诚是毋庸置疑 毋庸置疑毋庸置疑

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毋庸置疑的 的的 的。 。。 。 食用过多的糖会 食用过多的糖会食用过多的糖会 食用过多的糖会引起 引起引起 引起健康问题 健康问题健康问题 健康问题。 。。 。 Eating too much sugar canlead to Eating too much sugar canlead to health problems. 我们 我们我们

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我们坚决要求 坚决要求坚决要求 坚决要求全额退款 全额退款全额退款 全额退款。 。。 。 Weinsisted ona refund of the full amount.GrammarEx 6: What verbs are used in the text to report these statements? 1. Human beings are causing changes in the Earth’s climate. to report that2. Gases pumped into the Earth’s atmosphere have been speeding up the process of global warming. to claim that 3. Global warming could be one of the biggest environmental problems

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facing the 21st century. to believe that4. Global warming is mostly due to human activities. to insist that 5. Global warming will cause terrible climate changes including more frequent floods, heat waves, and droughts. to warn thatEx 7: Look at these sentences from the text and explain why the underlined verbs are not of the same tense as the reporting verbs.reporting verbs. 1.Recent reports warned that global warming will causeterrible climate changes.2. Scientists found that the temperature of the Earth is controlledby greenhouse gases. Answers: 1) because it is in the future

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2) because it is a general truthEx 8. Match the sentences with appropriate reporting verbs from the list. Then write the reported sentences. admit/report/forbid/ask/invite/order /suggest/threaten/suggest/threaten 1.We’ll close credit lines if you don’t reduce the amount of carbon dioxide you produce.2. OK, you’re right, some poisonous chemicals did escape into the atmosphere. 3. Why don’t you drop in tonight ahead of your meeting? 4. Stand up immediately! 5. You can’t use the dictionaries during the test.6. Shall we have pancakes with honey? 7. Is the bus service running according to the timetable today?to the timetable today?

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8. The fire has luckily caused no loss of life.1. They threatened to close our credit lines if we don’t reduce the amount of carbon dioxide we produce.The answersof carbon dioxide we produce. 2. They admitted that some poisonous chemicals had escaped into the atmosphere.3. He/ She/ They invited me to drop in tonight ahead of my meeting. 4. He/ She/ They ordered me to stand up immediately. 5. He/ She/ They forbade us to use our dictionaries during the test. 6. She/ He/ They suggested having pancakes with honey. 7. I/ He/ She/ They/ We asked if the bus service running according to the service running according to the timetable today. 8. He reported that the fire had luckily

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caused no loss of life.a)Tom advised John not to play the game today. John admitted that Tom was right The answers today. John admitted that Tom was right because he was still a little bit ill. He promised not to work too hard. Tom warned John to be careful because if he ran around too much in this weather he might get another attack of the flu.b) Sarah begged her mother to buy her the CD because she had always wanted it. Her mother refused and explained that she couldn’t afford it. She complained that her daughter always asked her to buy her The answers her daughter always asked her to buy her expensive things. The daughter denied this. She accused her mother of never buying

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her the things she wanted but only the things her mother liked. 1 ?women live longer than men. 2 ?our galaxy contains several thousand million stars. 3 ?the 2016 Olympics will be organised The answers 3 ?the 2016 Olympics will be organised in Africa. 4 ?this room was too hot. 5 ?the hurricane had killed 9 people. We don’t change the tense in 1, 2 and 3.他 他他 他抱怨 抱怨抱怨 抱怨他所受到的不公平待遇 他所受到的不公平待遇他所受到的不公平待遇 他所受到的不公平待遇。 。。

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。 He complained thathe had been 我 我我 我提醒他们 提醒他们提醒他们 提醒他们树林里可能有蛇 树林里可能有蛇树林里可能有蛇 树林里可能有蛇。 。。 。 unfairly treated. I warned them thatthere might be snakes in the woods.我们 我们我们 我们同意 同意同意 同意立即 立即立即

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立即离开 离开离开 离开。 。。 。 We agreed to leaveat once. 我 我我 我拒绝回答 拒绝回答拒绝回答 拒绝回答那个问题 那个问题那个问题 那个问题。 。。 。 I suggestedgoingfor a walk. 我 我我

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我建议 建议建议 建议去散步 去散步去散步 去散步。 。。 。 I refuse to answerthat question. 我 我我 我拒绝回答 拒绝回答拒绝回答 拒绝回答那个问题 那个问题那个问题 那个问题。 。。 。To learn more about the Global WarmingClick here

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