Part One The Analysis of teaching material
The Violence of Nature是外研版Book 3 Module 3的一篇閱讀文章，文章共分3部分，分別介紹了兩種自然災害--龍卷風和颶風的形成和危害及一次異常事件。
Part Two Teaching aims
1. 讓學生識記并能正確運用以下詞匯：ash, bury, current, disaster, erupt, flow, latitude, lava, occur, tornado, tropical, hurricane, pick up, take off, on average, end up。
2. 學習過去完成時的被動語態的用法。
3. 理解含有所學生詞、含有過去完成時的被動語態和間接引語的句子和段落，讀懂其意義并獲取信息；理解模塊提供的和來自其他渠道的對不同自然災害的介紹并獲取信息。
4. 引導學生整體把握文章主旨，提高閱讀效率；鼓勵學生開展小組合作，運用副詞表達好消息和壞消息。
5. 了解自然災害的危害，結合發生在我國的兩次大地震及甘肅省舟曲縣的泥石流，激發學生學好科學文化知識的決心和信心，以實際行動作好與自然災害作斗爭的準備，為人類造福。
Part Three Important points and difficult aims
1. 通過閱讀理解詞匯，通過詞匯學習掌握文章主旨，加深對文章的理解。
2. 理解文章中含有定語從句的句子及含有過去完成時的被動語態的句子。
3. 聯系實際，了解不同的自然災害帶來的危害，激發學生利用所學知識與自然災害作斗爭的決心。
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.
[設計說明]
使用多媒體視頻及圖片生動、形象地展示與文章相關資料，更直觀地展現自然災害的威力，吸引學生注意，激發他們的學習興趣和決心。
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.
[設計說明]
通過快速閱讀讓學生初步了解文章大意，歸納每一部分的主旨大意，提高閱讀技能。
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
[設計說明]
通過練習使學生有目的地進行閱讀，了解文章的細節信息，提高學生獲取信息和處理信息的能力。
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
[設計說明]
讓學生通過練習進一步獲取文章信息，提高閱讀理解能力及用英語思維的能力。
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)
[設計說明]
通過細讀了解文章細節，指導學生掌握一定的閱讀技巧，提高閱讀效率。
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發生
e.g. He told me how the accident occurred.
② Sth occur to sb... 想起，浮現
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作結果狀語。現在分詞短語作結果狀語表示兩個動作之間具有必然的因果關系，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……告終
e.g. Without your help, the experiment will end up with failure.
[設計說明]
讓學生掌握重點單詞、短語和句型的用法，分析長難句，提高閱讀水平和寫作技能。
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: 根據下面的提示寫一篇120~150詞的短文，可適當增添細節。
2008年5月12日，一次特大地震襲擊了汶川，數以萬計的人員傷亡，更有許多人無家可歸。震后，交通阻斷，水電供應也中斷了，災區情況嚴峻。消息傳出后，全國人民紛紛伸出援助之手，眾多國際組織和外國政府實施緊急救援，幫助災區人們渡過難關。
Some expressions to help you.
● be in ruins 變成廢墟
● in a flash 頃刻間
● as a result 結果
● become homeless 無家可歸
● what?s worse 更糟糕的是
● lose one?s life 喪生
● take action 采取行動
● donate money 捐錢
● raise / collect money 籌集資金
● call on sb. to do 號召某人做
● share pains and sorrows with...與……分擔痛苦與傷悲
● in a short time 在短時間內
● make contributions to 為……作出貢獻
[設計說明]
以小組形式展開討論，激發學生的積極性，提高他們的合作意識；利用所學知識組織文章，使之掌握寫作技巧，提高寫作能力。
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?”
[設計說明]
通過復述課文，培養學生利用所學知識進行英語口頭表達的能力；自己組織一篇開放式作文，鼓勵學生鞏固所學知識，并通過多種渠道收集信息，提高學習英語的積極性和主動性。