2020新外研版必修二英语 Unit 6 Earth First(3)-2PPT课件（含教案+学案+音频视频素材）.pptx

1、必修二 Unit 6 Earth First (3) 高一年级 英语 Environmental problems to be solved Listening and Speaking Learning goals 1.To select the topics the lecture covers after listening. 2.To note down the causes, effect and control measures in the past and present by listening again. 3. To talk about another environm

2、ental problem in a similar conversation. Activity 1: Thinking and answering Environmental problems to be solved Can you list out some environmental problems to be solved? Did you know? Smog comes from the words “smoke” and “fog”, and it is used to describe the air pollution in cities caused mainly b

3、y traffic and factories. Smog can be dangerous because it causes severe breathing problems and infections. Activity 1: Thinking and answering 1.Where does the word “smog” come from? Smog comes from the words “smoke” and “fog” . 2.What is it used to describe? It is used to describe the air pollution

4、in cities caused mainly by traffic and factories. Activity 1: Thinking and answering 3.Why is it dangerous? Smog can be dangerous because it causes severe breathing problems and infections. Watch a video Lets watch a video and get some more information about smog. Watch the video The components of s

5、mog Smog contains fog and haze. Fog consists of a large number of tiny water or ice. They make the visibility worse. Haze is air pollution. It is mixed up with dust, smoke and other dry articles. The component that makes up haze may have a negative effect on peoples health, especially for the old an

6、d children. Causes of smog 1. The heavy traffic causes air pollution. The increasing numbers of cars in the city area send off a lot of poisonous gas. 2. Factories keep emitting dangerous material that causes smog. 3. Smog can occur more quickly and be more severe on a hot and sunny day. Effects of

7、smog on the environment 1. Affect the ecological environment. Smoggy weather has an important impact on roads, railways, aviation, shipping, power supply system and crop growth. 2. Cause great harm to human health. Hinder the normal blood circulation. Cause heart disease and breath-related problems.

8、 Effects of smog on the environment Increase the possibility of suffering from infectious disease. 3. Affect traffic safety. Visibility is low. Traffic congestion is likely to occur. Traffic accidents occur. Measures to take 1. The government and authorities should enforce laws and regulations to co

9、ntrol the emission of polluting gas. 2. Plant more trees to improve the air quality. 3. Limit the numbers of cars on road. 4. Go to school or work with public traffic. 5. Make public speeches to raise peoples awareness. Activity 2: Reading and predicting Read the seven topics and predict the topics

10、covered in the lecture. P67 1. What the word “smog” means. 2. When the word “smog” appeared. 3. What caused smog in the past. Activity 2: Reading and predicting 4. What causes smog now. 5. The effects of smog on the environment. 6. How governments try to reduce smog. 7. What will happen if we dont r

11、educe smog. Activity 2: Listening and ticking Listen to the lecture and tick the topics that are covered in the lecture. Activity 2: Checking answers The topics that are covered. Keys : 1 2 3 4 6 1. What the word “smog” means. 2. When the word “smog” appeared. 3. What caused smog in the past. 4. Wha

12、t causes smog now. 6. How governments try to reduce smog. Activity 2: Focusing on the topics covered 1. What the word “smog” mean. It is a kind of air pollution, with smoke and fog. 2. When the word “smog” appeared. It was first used in the 1900s. 3. What caused smog in the past. It was a cold winte

13、r, so a lot of coal was burned at home and in the factories. The problem was that there was no wind, so thick smog covered the city. Activity 2: Focusing on the topics covered Activity 2: Focusing on the topics covered 4. What causes smog now. Nowadays, smog still exists, but is produced by chemical

14、s coming from traffic and factories. 6. How governments try to reduce smog. Factories must follow rules about what chemicals they use. In some cities, when theres smog, people have to pay to drive in the city center. Activity 3: Reading and predicting Read the slides in activity 8 and predict the ma

15、in idea. Activity 3: Listening and completing Listen to the audio and complete the slides. Activity 3: Checking answers Smog in the past Term created in :1. 1900s Big problems in London: 2. The Great Smog in December 1952 Causes of the problem: burning too much coal and 3. no wind Activity 3: Checki

16、ng answers Smog in the present Causes of the problem: 4. chemicals coming from traffic and factories Measures: rules about using 5. chemicals in factories and 6. requirements of paying to drive in the city center Activity 3: Answering a question Q 1. What other measures can you think of to reduce sm

17、og? Activity 3: Answering a question Q 2. Whats the relationship between the speakers? A teacher and his students. Activity 4: Listening and taking notes Now listen to the lecture again and take notes on the expressions used to interrupt the lecturer politely. Activity 4: Reading the tapescript Read

18、 the lecture by following the tapescript. Activity 4: Reading the tapescript Lecturer: Good evening, everyone, and thank you for coming to todays talk. Im Dr Brown and Im going to talk about air pollution in citieswhat we all know as “smog”. Please feel free to stop me if you have any questions. So,

19、 first of all, a bit of history. The term “smog” was first used in the 1800s in cities that had problems with smoke and fog. Activity 4: Reading the tapescript Student A: Sorry for interrupting, but I believe it was in the 1900s. Lecturer: Sorry, I made a mistake. You are right. It was in the 1900s.

20、 Thank you. London was one of the cities where smog caused big problems. In December 1952, it suffered from “The Great Smog”. It was a very cold winter, so a lot of coal was burned at home and in the factories. The problem was that there was no wind, so thick smog covered the city. Nowadays Activity

21、 4: Reading the tapescript Student B: Excuse me, but can I just askdid the smog cause any deaths? Lecturer: Im afraid so. According to research, about 4000 people are known to have died as a result of the smog, but that number could be much higher. It was terrible! Nowadays, smog still exists, but i

22、s produced by chemicals coming from traffic and factories. Activity 4: Reading the tapescript However, governments are taking measures to reduce smog as much as possible. Now, lets look at what smog does to our health Student A: If I could just stop you again Can you give us examples of these measur

23、es? Lecturer: Well, for example, factories must follow rules about what chemicals they use. In some cities, when theres smog, people have to pay to drive in the centre. Now, lets move on to the impact of smog on our health Activity 4: Reading the tapescript Activity 4: Focusing on expressions The ex

24、pressions used to interrupt others politely. Sorry for interrupting, but Excuse me, but can I just ask If I could just stop you again Activity 4: Making a summary and retelling Make a summary of the lecture and retell the passage. Activity 4: Reading the summary The lecture mainly focuses on “smog”.

25、 The term smog was created in the1900s. In December 1952, London suffered from “The Great Smog”. A lot of coal was burned at home and in the factories in the cold winter. Besides, there was no wind. Therefore, thick smog covered the city. Activity 4: Reading the summary About 4000 people died as a r

26、esult of the smog. Nowadays, smog still exists because it is produced by chemicals coming from traffic and factories. To reduce the smog, the governments are taking some measures now to improve the air quality. Activity 5: Answering the question Q. What is the proper time to interrupt others politel

27、y? A polite interruption is usually framed as a request for permission to interrupt someone, often starting with “If”, “May I ?” or “Can I ?”. Usually we interrupt someone when they pause for breath, or during the slight pause between spoken clauses. Speaking Read the materials on page 84 and 87. Ma

28、ke up a new dialogue about recycling by using the required expressions. Reading the sample dialogue Student A : Hello. Everyone knows it s important to protect the environment. Im going to talk about recycling. Please feel free to stop me if you have any questions. So first of all, the classificatio

29、n of household waste aims to help people separate different types of waste. This is important because these different types of waste can be disposed of Reading the sample dialogue or recycled appropriately and effectively. According to the materials I have collected, household waste can be roughly d

30、ivided into: food waste, non-recyclable waste, recyclable waste, including paper, glass, plastic and used batteries. Student B: Sorry to interrupt, but I believe used batteries are usually regarded as non-recyclable waste and should be disposed of separately. Reading the sample dialogue Student A: S

31、orry, Ive made a mistake. You are right. The used batteries are non-recyclable waste and should be disposed of separately. Thank you. China plans to introduce household waste classification and sorting in the first batch of cities by 2020. Only Beijing, Shanghai, Tianjin and Chongqing are included i

32、n the first batch. Reading the sample dialogue Student B: Excuse me. Can I ask another question? You mentioned that only four cities are included in the first batch of cities to introduce household waste classification and sorting. But I remember that apart from these four cities, all capitals of pr

33、ovinces and autonomous regions are also included in the first batch of cities. Is that right? Reading the sample dialogue Student A: I am sorry. Ive made another mistake. You are right. Now, Lets go back to what I was talking about. The target recycling rate in these cities has been set at 55% by 20

34、20. Student B: Sorry, but could I just stop you again to check about the target recycling rate? I am wondering whether the target recycling rate should be 55% or 35% by 2020. Reading the sample dialogue Student A: Well, let me see. Yes, you are right. I am sorry again for making the mistake. Thank y

35、ou for correcting all my mistakes. Student B: You are welcome. Focusing on the useful expressions Please feel free if you have any questions. Sorry to interrupt, but Sorry, I made a mistake. You are right. Excuse me. Can I ask another question? Sorry, but could I just stop you again to check？ Well,

36、let me see. I am sorry again for making the mistake. Making a summary 1. Smog in the past and smog in the present. 2. Expressions used to interrupt others politely. Homework Choose one of the tasks to finish. 1. Write a similar conversation to talk about another environmental problem. Use what you have learnt in this session. 2. Write a short essay to talk about the present situation of smog in Beijing and the measures the government has taken. Thank you!