1、优质文档优质文档Unit 5 The power of nature单 元 要 览本单元的中心话题是火山、飓风、地震和洪水等自然灾害，听说读写等语言知识和语言技能主要围绕“自然灾害”及如何预防和利用自然灾害这一主题进行。本单元引导学生讨论这些问题，目的在于帮助学生掌握与“自然灾害”这一主题有关的词汇知识，让他们了解自然界的威力，认识到人类只有保护自然，才能有效地预防自然灾害并改造和利用自然，同时也培养了 他们热爱大自然的情操。本单元的主要教学内容如下表所示：类别 课程标准要求掌握的内容话题 volcanoes；crater lakes；cyclones；floodsappoint v.任命；委
2、派 ash来源:学科网 ZXXK n.灰；灰末wave vi.波动；挥手 n波涛 hurricane n.飓风；风暴suit v.适合；使适宜 n套装 questionnaire n.问卷；调查表shoot v.射中；射伤 equipment n.设备；装备panic v.惊慌 n恐慌 database n.数据库；资料库guarantee v.保证；担保 helmet n.头盔potential n.潜在性；潜能 adj.可能的 boot n.靴子anxiety n.担心；焦虑；渴望 candidate n.候选人；候补者absolute adj.绝对的；完全的 bungalow n.平房；
3、小屋actual adj.实在的；实际的 typhoon n.台风anxious adj.焦虑的；不安的 thunderstorm n.雷暴alongsideadv.在旁边；沿着边 prep.在 旁边；沿着的边novelist n.小说家absolutely adv.绝对地；完全地 fog n.雾erupt vi.(指火山) 爆发；突然发生 document n.文件；证件evaluate v.评估；评价；估计 rainbow n.彩虹fountain v. 泉水般地喷出或涌出n喷泉；源泉 balcony n.阳台tremble vi.摇晃；摇动；颤抖 shot n.射击；枪炮声sweat v
4、i.出汗 n汗 appreciation n.欣赏；感激；感谢bathe vi.洗澡；游泳 precious adj.贵重的；珍贵的来源:Z#xx#k.Com来源:学科网 ZXXK来源:学科网词来源:学科网 ZXXK汇diagram n.图解；图表；示意图 uncomfortable adj.不舒服的；不优质文档优质文档舒适的volcano n.火山 unconscious adj.失去知觉的；未察觉的eruption n.火山爆发；(战争等)爆发 diverse adj. 多种多样的；不同的make ones way 前往 burn to the ground 全部焚毁glance thro
5、ugh 匆匆看一遍 attach.to.把附在上vary from.to.由到不等 compare.with.把和做比较a live volcano 一座活火山 be about to do 即将；马上；正要做part of 部分 run out of 跑出去；用光；耗尽out of the way 不挡道；不碍事；躲开 look down into 向下看be covered with 被所覆盖，遮掩 take.by surprise 使吃惊a great diversity of 多种多样的 be home to 是的栖息地；原产地in the distance 在远处；在远方 pick
6、up 拾起；捡起on earth 在地球上；究竟；到底；根本protect sb./sth.against/from sth.保护不受的伤害1.Having_collected_and_evaluated_the_information，I help other scientists to predict where lava from the volcano will flow next and how fast.(the ing form)2.I was_about_to go back to sleep when suddenly my bedroom became as bright
7、as day.(sb.be about to do sth.when.)3.The other two climbed down into the crater to collect some lava for later study，but this _being_my_first_experience，I stayed at the top and watched them.(the ing form)4.Having_studied_volcanoes_now_for_many_years，I am still amazed at their beauty as well as thei
8、r p otential to cause great damage.(the ing form)5.My job is collecting_information_for_a_database_about_Mount_Kilauea.(the ing form)句型6.I was appointed as a volcanologist working_for_the_Hawaiian_Volcano_Observatory(HVO)_twenty_years_ago.(the ing form)功能情感：喜悦、恐惧、焦虑、惊奇(Emotions ：joy，fear，anxiety，sur
9、prise)I became so excited that. Im looking forward to.Perfect! You did a good job.Im frightened. I was trembling.I was so anxious. I felt very nervous.Oh，my goodness. Oh，no!I had never felt so happy as. Doesnt that look lovely?I cant wait. I was never so frightened.Whats happening? Whats happened?Wh
10、ats that noise? Wheres the.？语法 复习ing 形式(Revise the ing form)I was appointed as a volcanologist working for the Hawaiian Volcano 优质文档优质文档Observatory(HVO) twenty years ago.My job is collecting_information_for_a_database_about_Mount_Kilauea.Having_worked_hard_all_day，I went to bed early.Having_experien
11、ced_quite_a_few_earthquakes_in_Hawaii_already，I didnt take much notice.教学重点1.Get students to know about disasters that are caused by natural forces.2Have students learn some useful new words and expressions about natural disasters and let them learn effective ways to master them.3Enable students to
12、express their emotions such as joy，fear，anxiety and surprise.4Let students get a better understanding of the grammar item：the ing form.5Develop students listening ，speaking ，reading and writing ability.教学难点1.Enable students to master the usages of the ing form.2Let students learn to write a letter e
13、xpressing emotions.3Develop students integrative skills.课时安排Periods needed：6Period 1 Warming Up，Prereading，Reading and ComprehendingPeriod 2 Language StudyPeriod 3 Grammar the ing FormPeriod 4 Listening and SpeakingPeriod 5 Reading and WritingPeriod 6 Summing Up，Learning Tip and AssessmentPeriod 1 W
14、arming Up，Prereading ，Readingand Comprehending整 体 设 计教学内容分析 This is the first teaching period of this unit.The central part of this period is the reading passage with the name of An Exciting Job showing the stude nts the power of nature.Warming Up gives two topics for students to discuss，letting stu
15、dents get some more knowledge about the power of nature.Prereading provides some questions and a questionnaire to help students focus on the topic of the reading passage and lead the students to think about any personal experiences of working outside， such as things about climbing into a live volcan
16、o，doing dangerous work， travelling，taking risks，adventure，studying rocks and so on.Reading is a firstperson account of a volcanologists experiences.He loves his job very much because he can help protect ordinary people from one of the most powerful forces on earth.His job is collecting information f
17、or a database about Mount Kilauea and helping other scientists to predict where lava from the volcano will flow next and how fast.Once，he watched an eruption and then collected some lava for later study.After many years，he is still enthusiastic about his job.Reading contains a picture that is an abs
18、olutely fantastic sight.After a glance at the 优质文档优质文档title of the text and the headlines within it we know that it is an account，in which there are many emotion expressions.Then we can understand the topic of the text and how the information is organized.Comprehending consists of three written or o
19、ral exercises for the students to do so as to help the students to get a better understanding of the text，that is to say，to help the teacher to check how much the students have understood the text.三维目标设计 Knowledge and skills1To know the meanings of the following new words and phrases：diagram(示意图) ，v
20、olcano(火山) ， erupt(爆发)，eruption(火山爆发) ，ash(灰末 )，hurricane(飓风)，questionnaire(调查表)，alongside(在旁边；在旁边) ，equipment(装备) ，appoint( 委派) ，database(数据库)，evaluate(评估) ，wave( 波浪)，fountain(泉水般地喷出或涌出；喷泉；源泉)，absolute(绝对的)，absolutely(绝对地)，suit( 一套外衣)，helmet(头盔)，boot(靴子)，potential(潜在性；潜在的)，actual(实在的) ，burn to the
21、ground(全部焚毁)，make ones way(前往 )2To learn about some disasters that are caused by natural forces，how people feel in dangerous situations and the ways in which humans protect themselves from natural disasters.3To learn how the information is organized.4To develop the students reading ability by skimmi
22、ng and scanning the passage.5To develop the students speaking ability by talking about natural forces.Process and methods1While doing Warming Up the teacher can lead in the topic of this unit by showing students some pictures of natural disasters and introducing some technical vocabulary concerning
23、volcanoes to review and deve lop students understanding of what a volcano is.To ask students to consider other natural disasters and the ways humans deal with them.2During Prereading the teacher can go around the classroom and disc uss the questions with several students.This discussion should be st
24、udentcentered and arouse students interest in working outside.The teacher should also ask the students some questions and try to let them have a general knowledge of volcanoes.3While doing Reading and Comprehending，the teacher may first ask the students to read the text quickly to get the general id
25、ea of each paragraph.After reading the passage carefully，students are encouraged to answer some questions and discuss the text structure.4To consolidate the contents of the reading passage，the students should be required to retell the volcanologists experiences in their own words at the end of the c
26、lass.Emotion，attitude and value1To stimulate students love to nature.2To develop students sense of cooperative learning.教学重、难点 1To enable the students to learn about the power of nature and to develop their reading ability.2To enable the students to talk about natural forces.教 学 过 程Step 1 Warming up
27、优质文档优质文档1Warming up by looking and talkingShow the following pictures to the students and let them know about the power of nature and talk about them.Sample expressions：What happened in the pictures above？Do you know any other natural disasters？Please work with your partners and make a list of natur
28、al disasters(such as earthquake，snowstorm，flood ，drought)Have you ever seen a volcano?(Some new words：lava erupt/eruption crater active/dormant/extinct volcanoes.)2Warming up by reading the passage below.Some knowledge about volcanoesThere are thousands of volcanoes all over the world.What makes vol
29、canoes？What happens?The inside of the earth is very hot.Because it is very，very hot，the rock has melted like ice.It has become liquid，like water.It is always boiling，like water in a kettle.If you have seen a kettle boiling，you know that the steam and boiling water try to get out.The very hot melted
30、rock inside t he earth also tries to get out.Usually it cannot because the outside of the earth is too thick and strong.But in some places the outside of the earth is thin and weak.Sometimes a crack(a small opening)appears.The hot melted rock，which we call “lava”，pushes up through the crack and burs
31、ts through.Steam and gas shoot up into the air and the hot melted lava pours out.Big pieces of rock may be thrown high into the air.After a while the volcano becomes quiet again.The melted lava becomes hard.Later the same thing happens again and again.Each time more hot lava pours out on top of the
32、cold lava and then becomes hard.In this way a kind of mountain is built up，with a hole down the middle.Perhaps the volcano will then be quiet and no more lava will burst out.Perhaps it will start again hundreds of years later.Vesuvius is the name of a very famous volcano in Italy.It first came to li
33、fe many，many years ago.It was quiet for hundreds of years.Then in the year 79 it suddenly burst.A great cloud of smoke shot up into the sky with great burning rocks，which fell all around.Hot lava poured down its sides.About 3000 people were killed.Step 2 Prereading1.Can you imagine climbing into a l
34、ive volcano in order to measure the temperature of the boiling rock inside？Now，read the following passage please.Why does Tazieff risk his life like this?Haroun Tazieff，the polish scientist，has spent his lifetime studying active volcanoes and deep caves in all parts of the world.In 1948，he went to L
35、ake Kivu in the Congo to observe a new volcano which he later named Kituro.Tazieff was able to set up his camp very closed to the volcanoes while it was erupting violently.Though he managed to take a number of b rilliant photographs，he could not stay near the volcanoes for very long.He noticed that
36、a river of liquid rock was coming towards him.It threatened to surround him completely.But Tazieff managed to escape just in time，he waited until t he volcanoes became quiet and he was able to return two days later.This time，he managed to climb into the mouth of Kituro so that he could take photogra
37、phs and measure temperatures.Tazieff has often risked his life in this way.He has been 优质文档优质文档able to tell us more about act ive volcanoes than any man alive.2Encourage students to talk more about volcanoes by looking a t the following pictures.Step 3 Reading and comprehending1Fastreading：Ask stude
38、nts to skim the passage so as to get the key words and general idea of each paragraph and answer the question：Whats the main idea of the text?2Read the passage carefully and answer the following questions.(1)Why is a volcanologists job important?(2)Why is the lava that flows on Mount Kilauea more da
39、ngerous than the actual eruption?(3)Why was it difficult for the writer to walk towards the edge of the crater?(4)What does the writer find impressive about volcanoes even after studying them for many years?(5)What did the author think it was when an eruption occurred?(6)Why did the scientists look
40、like spacemen?Suggested answers：1This passage is a fi rstper son account of a volcanologists experiences.The volcanologist described his exciting job and wrote down his first sight of an eruption.2(1)Volcanologists study volcanoes so that they can warn people when the volcano is going to erupt and s
41、o save many lives.(2)The lava flows down the mountain and can cover up or burn villages in its path.The rocks that erupt from the volcano usually dont damage anything because no one lives near the crater.(3)The author was wearing special protective clothing that made it difficult to walk.(4)The auth
42、or finds their be auty and their potential to cause great damage very impressive.(5)He thought it was an earthquake.(6)Because they wore white protective suits that covered their whole body.3Ask students to scan for detailed information and discuss the following question with their partners and be p
43、repared to report to the class.Question：Having learned a little more about the work of a v olcanologist，do you think it is an occupation you would enjoy？Give you reasons.Suggested answers: No，I probably wouldnt enjoy this job because I wouldnt h ave to live in other countries and I dont like being i
44、n dangerous situations，either.Above all， Im not very good at science.ORYes，Id love to do a job like this because I would enjoy working outside and I think I would enjoy the adventure.It would be exciting to meet people from different countries and I would feel good about helping people avoid danger.
45、Step 4 Language studyDealing with any language problem if any(words or sentences students might not understand)to help the students to have a better understanding of the text.Step 5 Listening，reading aloud and underliningAsk students to read the passage aloud to the tape and let them pay attention t
46、o the 优质文档优质文档pronunciation of each word and the pauses within each sentence.Tell them to pick out all the useful expressions or collocations from the passage while reading and copy them to the notebook after class as homework.Collocations：make ones way，a live volcano，be about to do，look down into，o
47、ut of the way，be covered with，burn to the ground，attach.to. ，compare.with. ，run out ofStep 6 Structure analyzing After reading，ask students to discuss the text structure.Keys for reference：This passage is a firstperson account of a volcanologists experiences.The volcanologist described his exciting
48、job and wrote down his first sight of an eruption.The first paragraph introduces the topic and the theme of the text.The rest of the text presents the information in chronological order.A feature of an account of a volcanologists experiences is the abundance of time expressions.The last sentence of the report functions as a conclusion.In addition，each section begins with a topic sentence.Step 7 RetellingAsk students to talk about the volcanologists experiences in their own words.Give them some key words and expressions.Then let them try t
