《Unit 4 Global warming Period 2 Reading》福建西山学校高中部高二英语集备教案
2014-04-23 08:12:13   来源：    点击：

Unit 4  Global warming  Period  2  Reading
主稿： 严义华	审核：  严义华	日期:     年   月   日   教师
知识与技能：	compare, phenomenon, graph, fuel, trap, data, climate, catastrophe, consequence, range, per, glance, compare to, come about, fierce debate, result in, build up.
过程与方法：	Listening, reading and group work.   A recorder and a computer.
情感态度与价值观：	Help the students learn how to talk about the causes and effects of global warming and express ideas about what people should do about it.
教学重点：	Help the students learn how to debate over the topic “We should do nothing about global warming.”
教学难点	Enable the students to learn the writing skills of the text and get a better understanding of articles of this kind.

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教学过程： Step ⅠRevision Check the homework. Step Ⅱ Pre-reading T: Now look at the picture. What is it in the picture? S: A greenhouse. T: Right. Who can tell me what it is used for? Sa: A greenhouse is made of glass and is used for growing plants, especially during cold weather. T: Yes, you are right. And how does it work? Sb: 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. T: Exactly. Thank you. But today we are not going to talk about greenhouse, we’ll talk about greenhouse gases. Have you heard about this before? Sc: I know. In the atmosphere surrounding the earth there are gases, which are called “greenhouse gases”, including carbon dioxide, methane and water vapor. T: That’s correct. Then what do you think greenhouse gases do? Sd: Let me explain it. They trap heat from the sun and therefore warm the earth. Step Ⅲ While-reading Get the students to read the passage fast and meanwhile help the students form a good habit of reading. T: What do you think will be talked about at the sight of the title “THE EARTH IS BECOMING WARMER — BUT DOES IT MATTER?” Now please skim the passage to obtain a general idea of the whole passage. While reading, pay attention to the writing skills and if possible, divide the whole passage into several parts and summarize the main idea for each part. After a few minutes. T: How many parts can this text be divided into? T: Any different ideas? OK. Now let’s finish the form on the screen. Show the form on the screen and let the students complete the form. Step Ⅳ Comprehending Let the students read the passage again to find out the answers to the questions in Exercises 1 and 2 T: Now let’s listen to the tape. While listening, pay more attention to specific information. Then read the whole passage by yourselves. Try to find out the answers to questions in Exercises 1 and 2. You may work in groups. Step Ⅴ Debate Get the students to debate over the statement: We should do nothing about global warming. Let them work in groups of six to prepare it. T: Now you are going to have a debate: We should do nothing about global warming. Please follow these instructions. Put the following instructions on the screen. Step Ⅵ Homework 1. Read the passage again and review the new words and expressions. 2. Prepare the debate in groups. 3. Preview Using Language ― WHAT CAN WE DO ABOUT GLOBAL WARMING？

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