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unit7 pollution PPT

这是unit7 pollution PPT,包括了Review(复习),Teaching objectives(教学目标) ,Pre-Reading: 情境体验,summary,Homework等内容,欢迎点击下载。

unit7 pollution PPT是由红软PPT免费下载网推荐的一款课件PPT类型的PowerPoint.

第7单元 Pollution for Teaching objectives(教学目标) Knowledge objective(知识目标) To master key words and sentence patterns. Ability objective(能力目标) To master the main ideas of the text, practice their reading and writing ability Moral objective(情感目标) To understand the importance of environmental protection, and do something in daily life. Lead in(导入) Ask the students to talk about the following to question: 1. List some examples in our surroundings about pollution, and analyze its cause. 2. What is the first solution to reduce air pollution ? Pre-Reading: 情境体验 Environment pollution is everywhere in our daily life. Suppose you are a man who is on the way to work, you may come across many forms of pollutions. List some, and analyze the causes with your partners, then conclude how to solve them. 情境体验 规则: 1.清点人数,均分为6组,选出组长; 2.各组以小组为单位讨论,每人发言,组长归纳,选出队员表演; 3.每个组依次表演。 情境体验 Presentation : Each group show their performance. 情境体验 Teacher’s Evaluation: 1. Good points. 2. Details that students should pay attention to. Para.1 When I wake up in the morning, I pause briefly before opening my curtains, and what I see out of my window is likely to set the tone for the rest of the day. Para.2 I am not checking up on the weather. Instead, I want to know exactly how bad the pollution is going to be. On some mornings, it is truly horrible. It is as if the whole city has been turned into a smokers’ room with a yellowish color staining the sky. Para.3 And this month, pollution in my city went from bad to... well, dangerous. The hospitals were filled with patients, old and young, suffering from breath-related problems. People were warned to stay indoors and the streets were unusually quiet. Para.4 Sales of air purifiers for homes, as well as face masks, rocketed and some stores simply ran out. Even for a city that is used to pollution, this was an emergency. Para.5 For years, the local authorities often played down the pollution in the city, insisting it was fog in most cases, despite evidence to the contrary that was plain for all to see. Para.6 Faced with public pressure, the local authorities started publishing the hourly air-quality readings this year. And when the recent unusually heavy smog hit, the state media, for the first time on this issue, made its voice heard. Para.7-8 The pollution story led the country’s main evening TV news program. Even the major national daily newspaper ran a headline asking “What’s wrong with our air?”. Well, the answer is not far to seek. The problem is caused by the country developing at a speed and scale unheard-of in history. It has been growth at all costs, resulting in widespread environmental worsening. Para.9-11 Coal-burning energy plants power the country’s factories; they provide the heat for hundreds of millions of homes, but they also emit poisonous gases into the air. In my city alone, several million cars choke the streets, an illustration of the country’s growing prosperity. But all these vehicles, normally bumper to bumper, are also a sign of a country that is not coming to terms with pollution. And it is not just the air quality. Lakes, rivers and underground water supplies have all been badly polluted by lightly regulated industry. Almost no one in the city trusts the water that comes out of their taps. So maybe the great smog of this city in recent days will mark a turning point. A time when the people say: “We need to put quality of life before economic growth.” In recent months, there have been several large-scale protests against factories being built in various cities. Para.12 But a huge sea change looks unlikely—for now, anyway. Economic growth remains the city’s top priority. Without it, large numbers of people could be left unemployed. There are still millions of people who want the keys to their first car, their first air-conditioner, even a fridge. Who is going to be the one to deny them their dream? For that reason, clean air is likely to remain a rarity in my city for years to come. Some wealthy people are taking their kids to live in Canada or Australia. But for most, that is not an option. Para.13 As for me, after about five years of living here, I have ordered my first air purifier. And I now wear a face mask for my bike ride to work. And every morning, before opening my curtains, I pause and hope that the wind has blown the pollution away. summary Consolidation Homework 1. Read the text aloud after class. 2. Memorize all the new words and phrases in this unit. Best wishes for you all

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