Part One The Analysis of teaching material
The Violence of Nature是外研版Book 3 Module 3的一篇阅读文章，文章共分3部分，分别介绍了两种自然灾害--龙卷风和飓风的形成和危害及一次异常事件。
Part Two Teaching aims
1. 让学生识记并能正确运用以下词汇：ash, bury, current, disaster, erupt, flow, latitude, lava, occur, tornado, tropical, hurricane, pick up, take off, on average, end up。
2. 学习过去完成时的被动语态的用法。
3. 理解含有所学生词、含有过去完成时的被动语态和间接引语的句子和段落，读懂其意义并获取信息；理解模块提供的和来自其他渠道的对不同自然灾害的介绍并获取信息。
4. 引导学生整体把握文章主旨，提高阅读效率；鼓励学生开展小组合作，运用副词表达好消息和坏消息。
5. 了解自然灾害的危害，结合发生在我国的两次大地震及甘肃省舟曲县的泥石流，激发学生学好科学文化知识的决心和信心，以实际行动作好与自然灾害作斗争的准备，为人类造福。
Part Three Important points and difficult aims
1. 通过阅读理解词汇，通过词汇学习掌握文章主旨，加深对文章的理解。
2. 理解文章中含有定语从句的句子及含有过去完成时的被动语态的句子。
3. 联系实际，了解不同的自然灾害带来的危害，激发学生利用所学知识与自然灾害作斗争的决心。
Part Four Teaching procedures
StepⅠWarming up
Show a video “Storm Chasers” and some pictures about tornado, hurricane and other natural disasters to lead in the topic of this passage.
[设计说明]
使用多媒体视频及图片生动、形象地展示与文章相关资料，更直观地展现自然灾害的威力，吸引学生注意，激发他们的学习兴趣和决心。
StepⅡSkimming
Let the students read the whole text quickly and say the main idea of each part.
● Part 1: A tornado is a rotating column of air and introduce its power.
● Part 2: Hurricanes are strong tropical storms and introduce its power and the worst disaster by it.
● Part 3: Charles Coghlan?s story in the worst hurricane disaster.
[设计说明]
通过快速阅读让学生初步了解文章大意，归纳每一部分的主旨大意，提高阅读技能。
StepⅢ Scanning
1. Let the students read the passage again and then work in pairs or groups to fill in the chart according to the text.
Keys:①A rotating column of air from a thunderstorm to the ground ②In the US ③More than 400kms/h ④Pick up cars, trains and even houses and put them down in the next street - or even in the next town; take the fur off the back of a cat and the feathers off a chicken; destroy the houses ⑤In 1925, in the US; killed more than 700 people; injured 2,700 people ⑥Strong tropical storms ⑦In the southern Atlantic Ocean, the Caribbean Sea and the Gulf of Mexico ⑧120kms/h or more ⑨Cause huge waves, heavy rain and floods ⑩ September the 8th, 1900; killed 6,000 people; destroyed 3,600 buildings
[设计说明]
通过练习使学生有目的地进行阅读，了解文章的细节信息，提高学生获取信息和处理信息的能力。
2. Do activity 2 and activity 3 on Page 22 by themselves.
Activity 2: Read the passages on page 23 and answer these questions.
(1) How strong are tornado winds?
(2) What can happen to furniture when a house is destroyed by a tornado?
(3) How many tornadoes are there in the US every year?
(4) How many people died in the worst tornado of all time?
(5) What happens at sea during a hurricane?
(6) When was the worst hurricane of all time?
(7) Was the actor Charles Coghlan killed in it?
(8) What happened to him after the hurricane?
Keys: (1) More than 400km/h. (2) It stays where it was. (3) About 800. (4) More than 700. (5) It has huge waves. (6) On the 8th September, 1900. (7) No, he wasn?t. (8) His coffin was dropped in the sea by a hurricane and carried to Canada by the Gulf Stream.
Activity 3: Find the words and expressions in the passages and match them with the definitions.
(1) you can see this on an animal_____
(2) describing the hottest parts of the earth, north and south of the equator_____
(3) a terrible event _____
(4) you can see these on a bird _____
(5) to place in the ground or tomb_____
(6) to happen _____
Keys: (1) fur (2) tropical (3) disaster (4) feathers (5) bury (6) occur
[设计说明]
让学生通过练习进一步获取文章信息，提高阅读理解能力及用英语思维的能力。
StepⅣ Careful reading
Let the students read the text carefully and do the following exercises.
Decide if these statements are true(T) or false (F).
(1) All tornadoes have winds of more than 400 kilometres per hour. (F)
(2) There are more tornadoes occurring in the US than in other parts of the world. (T)
(3) Tornadoes can?t destroy furniture because they are not violent enough. (F)
(4) In the US, there are usually about 80 people killed in tornadoes every year.(F)
(5) The worst tornado in history killed at least 700 people. (T)
(6) Every year there are six Atlantic hurricanes. (F)
(7) Both the worst tornado and the worst hurricane occurred in the US. (T)
(8) The worst hurricane of all time killed about one?sixth of the population in the US. (F)
(9) Charles Coghlan didn?t become famous until he moved to New York. (T)
(10) Coghlan?s coffin was destroyed by the 1900 Galveston hurricane. (F)
(11) It was only because of the hurricane that Coghlan?s body could travel back to Canada. (F)
[设计说明]
通过细读了解文章细节，指导学生掌握一定的阅读技巧，提高阅读效率。
StepⅤ Important language points
1. Almost all of them occur in the US, in the area from Texas in the southeast to South Dakota in the north.
occur:
①发生
e.g. He told me how the accident occurred.
② Sth occur to sb... 想起，浮现
e.g. An excellent idea occurred to me when I woke up this morning.
It occurred to me that I would travel to Europe.
2. On average, there are 800 tornadoes in the US each year, causing about 80 deaths and 1,500 injuries.
causing about 80 deaths and 1,500 injuries作结果状语。现在分词短语作结果状语表示两个动作之间具有必然的因果关系，通常放在句末。
e.g. Football is played in more than 80 countries, making it the most popular game in the world.
3. The cemetery where Coghlan was buried was destroyed by the hurricane and Coghlan?s coffin ended up in the sea.
end up with 以……告终
e.g. Without your help, the experiment will end up with failure.
[设计说明]
让学生掌握重点单词、短语和句型的用法，分析长难句，提高阅读水平和写作技能。
StepⅥ Discussion
The teacher shows the topic and some information about the Wenchuan earthquake. First, let the students discuss in groups. Second, each group will display a passage according to the given materials. Then, the teacher and students correct the mistakes and choose the best one together. Finally, show the possible version for the students to refer to.
Discussion and writing: 根据下面的提示写一篇120~150词的短文，可适当增添细节。
2008年5月12日，一次特大地震袭击了汶川，数以万计的人员伤亡，更有许多人无家可归。震后，交通阻断，水电供应也中断了，灾区情况严峻。消息传出后，全国人民纷纷伸出援助之手，众多国际组织和外国政府实施紧急救援，帮助灾区人们渡过难关。
Some expressions to help you.
● be in ruins 变成废墟
● in a flash 顷刻间
● as a result 结果
● become homeless 无家可归
● what?s worse 更糟糕的是
● lose one?s life 丧生
● take action 采取行动
● donate money 捐钱
● raise / collect money 筹集资金
● call on sb. to do 号召某人做
● share pains and sorrows with...与……分担痛苦与伤悲
● in a short time 在短时间内
● make contributions to 为……作出贡献
[设计说明]
以小组形式展开讨论，激发学生的积极性，提高他们的合作意识；利用所学知识组织文章，使之掌握写作技巧，提高写作能力。
Step Ⅶ Homework
1. Retell the text using about 100 words.
2. Combine the natural disasters which happened in our country in recent years, and write an essay based on the main idea “Faced with a natural disaster, what should you do to fight with it and benefit the human beings?”
[设计说明]
通过复述课文，培养学生利用所学知识进行英语口头表达的能力；自己组织一篇开放式作文，鼓励学生巩固所学知识，并通过多种渠道收集信息，提高学习英语的积极性和主动性。