新人教版英語高二上module6unit4globalwarmingword說課一(存儲版)
【正文】 2.) How does it work? The air inside is warm because the glass traps the heat from the sun and keeps it from escaping. This makes the greenhouse heat up and so the plants can grow throughout the cold period. 3.) What are the “greenhouse gases”? In the atmosphere surrounding the earth there are gases, which are called “greenhouse gases”, including carbon dioxide, methane(甲烷 , 沼氣 ) and water vapor. 4). What do you think greenhouse gases do? They trap heat from the sun and therefore warm the earth. (This part enable students to know and think more about what is global warming by looking at some pictures and answering some questions. During this part, at first, students can learn some words about the topic and then have a few minutes to think about the pictures and questions. At last, them can show their own thoughts and answers.) Step III Dis cussion: Should we do nothing about global warming? Divide the class into two groups. Expressing agreement and disagreement Yes, I agree with you. Yes, I think so. I believe that you’ve got it right. I don’t think so. I don’t think that’s right. I’m afraid you are wrong. Yes, because… No, we should…, because… I dont’ think so. I think… I don’t’ agree with you, because I think… (During this part, students can be divided into two groups. They can do the task by group work and show their ideas by using the words, phrases or expressions given on the screen.) Step Ⅳ Summary and selfassessment Making a summary for this class.(Review what has been learned) Think about what you have read and practised in thisclass. Then tick the boxes. I have learned I need to learn this well more I have learned about : What is
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