Module 4 Sandstorms in Asia
教学内容分析 本模块以Sandstorms为话题，旨在让学生深入了解沙尘暴的起因和对我国乃至整个亚洲的危害，并通过以“沙尘暴”和“环境保护”为话题的各种任务或活动，让学生掌握与沙尘暴和环境有关的词汇，了解沙尘暴方面的知识。培养学生用英语谈论沙尘暴及环保的语言技能，同时提高学生的环保意识。
Writing部分介绍了如何描述和比较不同地区的写作步骤。通过这部分的学习，使学生在speaking的基础上提高归纳、对比等的思维能力。
Module File部分有助于学生对本模块学习内容进行归纳、巩固和检验。 学情分析
学生对Developing and Developed Countries话题很有兴趣，他们可以简单对发达国家和发展中国家社会发展的差异进行分析介绍。 学习目标
1）对发达国家和发展中国家社会发展的差异进行分析介绍。
2）对人类社会发展有正确的认识并能自如的对地区和城市发展差异进行对比，写出短文。
3）对整个模块的学习内容进行小结，巩固本模块的知识。 教学重点和难点
1、教学重点
（1）学习掌握关于社会发展，城市介绍的词汇； （2）学习连词的用法； （3）学习如何做比较。
2、教学难点
（1）听懂与社会发展、城市比较有关的常用表达； （2）正确使用连词；
（3）学会运用所学词汇，准确表达。 教学辅助手段：电脑（或实物投影仪） 教学方法：讨论法
课时：第5课时 课前准备
预习学案，先列出关键词，翻译句子，划出不会表达的字词句。 教学步骤 Teaching Goals:
1. To enable Ss to describe one environmental problem; 2. To improve Ss’ writing skills;
3. To help Ss review what we have learned in this module. Teaching procedures: Step 1. Writing
1. Ask Ss to work in pairs and talk about two or three environmental problems. Make notes and write down the key words and phrases. Here are some sentence patterns: One major environmental problem is… There is a problem with….
2. Ask Ss to work in pairs and find out as many solutions as possible to the problems and write
down the key words and phrases.
Here are some suggestions for language. We should… We need to… We must…
3. Ask Ss to write down the problems and solutions. And then write two or three sentences to summarize.
One example: One major environmental problem is cars, because they pollute the air with carbon dioxide. We need to find a cleaner way to travel. People should cycle and walk more. 4. Ask Ss to exchange their writing with a partner for peer correction of content, structure and language.
One possible version
Humans change the environment in many ways and the most serious environmental problems are air pollution and water pollution.
With the development of industry and agriculture, the air and water have been seriously polluted, which is doing harm to us human beings. And many kinds of wild animals are dying out. So we must get a clear understanding of the dangerous situation we are in and take some measures. For example,it is important to deal with the rubbish in cities. Rubbish must be treated properly, or it may pollute the air and water. And when people breathe polluted air or drink polluted water,
they may get ill. So some rubbish should be sorted and sent to different factories. Rubbish, such as old newspapers and glass, should be recycled; some harmful rubbish should be sent to certain places and buried. At the same time, waste gases must be cleaned before they are returned to the air; and waster water needs be treated before flowing into rivers.
In a word, it is a duty of everybody to solve the problem and we should put into our hearts how important it is to protect the environment.
Step 2. Task
Ask Ss to design a poster that encourages people to look after the environment. Write down Ss’ suggestions to encourage people to take actions. Step 3. Module File
Ask Ss to look at Module File on page 20 and try to recall what they have learnt in the module. Then tick the things they are sure that they know and put a question mark next to the points they are not sure of and a cross to what they don’t know. Help Ss to share their ideas and deal with the difficult or confusing points.
Ask Ss to read some articles or novels about sports to strengthen their reading skills and enlarge their vocabulary. Step4. Homework
1. Ask Ss to review Module 4. 2. Ask Ss to preview Module 5.