Moudle 2 Unit 4 Natural disasters 教案1.doc

Module 2 Environmental problemsUnit 4 Natural disasters教案1教学目的1、练习阅读策略与句子的完整文本的空白。2、练习使用自然灾害的词汇。3、做练习的文本。4、谈灾害援助。教学重点1、一些学生可能会用的词汇发音有问题。2、如何读课文，把握文章的主要意思。3、为了帮助学生提高他们的英语表达和创造力的能力。教学难点1、关键词：振动，恐惧，尖叫，方向，疯狂，冷静，被困，此刻，风，因为，快点。2、想知道更多关于地震的文章。教学工具多媒体电脑，黑板。教学内容Step 1 GreetingGreet the whole class as usual.Step 2 Warm upShow them some pictures of the disasters. Look at the following pictures and point out what kind of disasters they are?Are they caused by people?Are they made worse by people?Are they natural?And then lead in new subject: Natural Disasters.Step3 Read to learnAsk Ss to read the text and check their answers to Exercise1.Tell Ss to read through the sentences first before they go back to the text and study each paragraph, and then ask them to complete exercise3 individually, check their answers.Use the Strategies to complete the gaps in the text (1-5) with these sentences (a-g). There are two extra sentences you do not need.But evidence shows that 73,000 years ago there was a much greater eruption.Even Europe has suffered and large areas have been underwater.That is probably not the most important factor either.Third, the other bits of land you might have been able to farm are now useless.On top of that add global warming.For example, the Yellow River, once famous for flooding, failed to reach the sea at all for 226 days in 1997. One answer is overpopulation.Step 4. ListeningPlay the cassette, while they are listening, ask them to pay attention to the pronunciation of the speaker and check the answers in exercise 3.Step 5. Intensive readingAsk students to read the text again and answer the questions. Read the passage carefully again and fill in the following blanks on the screen.1. what is the attitude of the journalist towards the future?2. Who are the most likely to be victims of natural disasters?3. Why are there now more hurricanes, floods and droughts?4. Why are volcanoes and earthquakes more dangerous now?5. What could be the biggest threat to the planet in the future?6. What effects might this threat have?Step 6. Post-readingRead the text carefully and fill in the following blanks.Reasons: (paragraph 3)(5)_in the developing world;(6)_ caused by the huge amounts of CO2 produced by factories and vehicles, and the destruction of the worlds forests.In the last decade (para1&2):Natural disasters haveBecome (1) _.Volcanic eruptions and earthquakes have always been a (2)_in certainparts of the world. At present:(paragraph 4):Volcanoes and earthquakes are evenmore (3)_ than in the past. In the future:(paragraph 5)Most disaster experts believe that thingscould become a lot(4)_.Nature is turning on us in various forms of natural disasters:At present:(paragraph 4):Volcanoes and earthquakes are evenmore (3)_ than in the past. In the future:(paragraph 5)Most disaster experts believe that thingscould become a lot(4)_.Nature is turning on us in various forms of natural disasters:Step 7. DiscussionWork in pairs. Discuss these questions:1. What natural disaster has happened in the last year?2. What were the results of the disaster?3. What do you think governments can do to help prevent natural disaste