1、Module 4Sandstorms in AsiaPeriod 6Task & Module file & Reading(page 87)教学内容分析作为本模块的最后一部分，本部分主要帮助学生复习本模块所学的内容。模块文档展示了主要的语言点，这是一个可以培养学生自我反思和总结学习策略的很好方法。在本部分将为不同水平的学生提供不同的练习。任务主要在于鼓励学生谈论保护环境的重要性以及如何保护环境。练习册87页的阅读活动是本模块的泛读材料，目的在于进一步培养学生的阅读能力。在这节课，为了帮助学生把握文章的主题思想以及细节方面的信息，应当向学生介绍一些阅读策略。 三维目标设计Knowledge a
2、nd skills1To help the students revise the following words and expressions.Words：(见Module file)Expressions：(见Module file)2To cultivate the students learning strategies of selfreflection and summary.Process and methods1To encourage the students to take an active part in the learning activities by givi
3、ng them clear instructions on what to do while reading a new passage.In addition，correct possible mistakes they might make in a proper way by making necessary changes while repeating their sentences.2To encourage the students to cooperate with the others by working in pairs or in groups of four.3To
4、make sure that the students pay attention to the important points of this module.4To encourage students to evaluate the effect of their own learning by summarising the effective learning methods.Emotion，attitude and value1To help the students enlarge the knowledge about desertification.2To help the
5、students appreciate the advantage of cooperative learning.教学重点1To display the module task and guide the students to carry on the evaluation and summary.2To help the students learn how to write an article about one environmental problem.教学难点1To help the students learn to organise their own sentences
6、to describe one environmental problem. 2To carry out accurate evaluation while dealing with the students sentences they make to express their ideas in class.Step 1Prepare a presentation on desertification 【15 min.】1Work in groups Ask the students to make a list of the sandstorm according to the info
7、rmation theyve got from magazines or TV programmes.2Ask students to discuss the items in their list with other members of their group.PhenomenaReasonsSuggestions.3.PresentationPresent the content to the rest of the class based on their discussions.Step 2Module file 【20 min.】1Give the students 10 min
8、utes to go through the module file，ticking the things they know about，making a question mark next to those things they are not sure of，and a cross next to those they dont know.2Have a dictation of the words and phrases of this module.3Review the grammar rules：1)The infinitive2)ButinfinitiveExercise：
9、Put the verbs in brackets into the correct infinitive forms.aShe has no choice but _(sleep)bTom did nothing but _(watch TV)ANSWERSa.to sleepb.watch TV4Finally，review Function and Everyday English.Ask the students to talk about what they learned in the Function and Everyday English.Step 3Reading(page
10、 87)【8 min.】1Read the article and find out the answers to the following questions.1)What was the Dust Bowl and when did it happen?2)What parts of the world are affected by desertification?Ask the students to read through the text quickly and silently.Give them the suggestion that they should focus o
11、n the general idea and also on the detailed meaning.Make sure they dont read the text aloud.ANSWERS1)It was a dust storm in the 1930s in the USA.2)Many regions of the world are being affected；China and Africa are two examples.2Read the article again and answer the following questions.1)What caused t
12、he disaster?2)How does our government do to fight against the desertification?3)What are the conditions in Africa?ANSWERS1)It was caused by bad farming methods and several years with very little rainfall made things worse.2)The Chinese government is fighting desertification by improving farming meth
13、ods and planting trees and grass.3)In Africa they are worse than anywhere else.They are losing a large part of their agricultural lands.Now they cant produce enough food for their population and their governments dont have enough money to fight desertification.3Language points1)The Dust Bowl of the
14、1930s was the worst agricultural disaster in the history of the United States.2)Over 200,000 people were forced to leave their homes and moved west to the cities.3)However，there is still a lot to be done before people can farm the land again.Step 4Making a summary 【2 min.】Summarise the whole period.
15、First，emphasise the main points of this module in order to better guide the students to carry on the selfreflection and summary.Make sure that the students have a good command of the vocabulary and phrases about protecting the environment.Then summarise the reading strategiesskimming，scanning，guessi
16、ng and key words in order to help the students better understand a passage.Step 5HomeworkAsk the students to write a composition according to the presentation in Step 1.SandstormA massive sandstorm has enveloped most of northern China，covering the capital Beijing in a shroud of dense dust and reduci
17、ng visibility to less than 50 metres in some areas.The storm is the strongest and most intense this spring，and hit Chinas north on March with fierce winds.Sandstorms are frequent in spring，triggered by sudden seasonal temperature changes.It covers the entire city with layers of sand，and air transpor
18、tation has been affected in the stormhit regions，which spread from the west to the east of northern China including Gansu and Ningxia provinces as well as the Inner Mongolia Autonomous Region.Therefore，many people wonder how much worse the weather will become when the spring sandstorms sweep into th
19、e mainland one after another.In fact the sandstorm has posed a serious threat to the air quality and environment.Sandstorms like these，which occurred in ancient times，are widely known among the herdsmen in Inner Mongolia as “Huangmaofeng，” meaning，“wind that carries yellow sand”In recent years，these
20、 sandstorms have occurred more frequently，at shorter intervals，and with greater intensity.A sandstorm on December 31st,2000 was the first one to hit China in decades.Since then，there has been one every month.We cant help but ask：is this a phenomenon purely powered by Mother Nature，an occurrence over
21、 which we have no control?The fact is that sandstorms are caused largely by human actionsmainly excessive herding and exploitation of the grasslands.Under normal conditions，Inner Mongolia provides grazing for up to some forty million sheep；yet，as many as seventy million sheep have been feeding on th
22、at area recently.Because of the increasing price of goats wool，herdsmen in Inner Mongolia have been hustling to raise goats.In these times，desertification is a primary environmental concern.Unrestricted farming is believed to be the main cause of desertification.Serious destruction of vegetation，dat
23、ing back from the Cultural Revolution in the 60s and 70s to as recently as two years ago，has prompted the tenthousandpeopleplanttrees activity，with an aim of reducing the incidence of sandstorms.However，such measures touch only the tip，but do not address the basis of the problem.No one ever bothers
24、to care for the trees after planting them and so the survival rate of the trees is staggering low.This simply is not a viable method of resolving the problem.With the global climate constantly changing，sandstorms are expected to occur more frequently，and humanity will be forced to confront the delay
25、ed effects of having recklessly exploited the environment.It is only recently that some of us，who have been pursuing economic goals，have begun noticing the environmental backlash.Perhaps man，who is finally eating his own bitter fruits，will understand that economic development does not have to be at
26、the expense of the environment.Instead，environmental preservation and economic development should go hand in hand.Take herding for example：enclosed herding is better than open herding for preserving vegetation，therefore，there are choices that could be made in this respect，with consideration for the
27、preservation of the ecosystem.In the future，one of the most noticeable results of globalisation will perhaps be environmental destruction.Desertification is not just happening in China，and the problem of sandstorms does not only occupy the minds of Chinese.The entire world is now being compelled to face the repercussions of overuse of the earths natural resources，including land exploitation in the pursuit of economic prosperity.We are gradually discovering how closely linked is destruction of the environment in one region，to environmental concerns in other areas around the world.