unit5thepowerofnature省公共课一等奖全国赛课获奖课件.pptx
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1、Unit 5 The Power of Nature 第1页Remember what happened on Dec 26,?tsunami Do you know any other natural disasters?Please work with your partners and make a list of natural disasters.Warming up(4m)第2页earthquakefloodsdrought第3页thunder/lightningtornado/cyclonehurricane /typhoon第4页volcano-eruption第5页What
2、do you know about volcano?Do you know how a volcano erupts?第6页volcano-eruptionBoiling rock erupts from the crater;the lava flows slowly down the mountain.Magma chamberLavaCraterAsh cloud/volcanic ash第7页More about the volcanoMore about the volcano1.How is a volcano formed?The rocks under the earth be
3、come hotter and hotter and erupt from the mountain.第8页Near the oceans.2.Where is most possible for a volcano to erupt?第9页An extinct volcanoHaleakala Crater,the largest dormant volcano in the worldMaui,HawaiiAn active volcano3.What types of volcanoes do you know?dormant volcano第10页Questions Questions
4、 Yes No 1 Do you like working outside as well as inside?2 Do you enjoy travelling to unusual places?3 Do you enjoy taking risks?4 Do you dislike doing the same thing every day?5 Do you like adventure in your life?6 Are you interested in studying rocks and other things that make up the surface of the
5、 earth?What qualities are needed for a What qualities are needed for a volcanologist?Are you suitable for being aAre you suitable for being a volcanologist?Answer“yes”or“no”to the following questions.Pre-reading(4m)第11页 What might be talked about?第12页1.What is the writer?2.When did he first see an e
6、ruption?How did it look like?3.What was he wearing when getting close to the crater?And what was the result?Skim the text and answer the following questionsSkimming(3m)第13页1.What is the writer?2.When did he first see an eruption?How did it look like?He is a volcanologist working for the Hawaiian Vol
7、cano Observatory.He mainly collects information about Mount Kilauea.It was in the second week after he arrived in Hawaii.It was very bright although it was night.Red lava fountained hundreds of meters into the air and it was a fantastic sight.第14页3.What was he wearing when getting close to the crate
8、r?And what was the result?He was wearing white protective suits that covered his whole body,helmets,big boots and special gloves,just like a spaceman.As a result,it made him difficult to walk.第15页1.Why is a volcanologists job important?2.Why is the lava that flows on Mount Kilauea more dangerous tha
9、n the actual eruption?3.Why did the scientists have to get close to the volcano after it began erupting?4.What does the writer find impressive5.about volcanoes even after studying 6.them for 20 years?Scan the text and answer the following questionsScanning(5m)第16页1.Why is a volcanologists job import
10、ant?Volcanologists study volcanoes so that they can warn people when the volcano is going to erupt and so save many lives.2.Why is the lava that flows on Mount Kilauea more dangerous than the actual eruption?The lava flows down the mountain and can cover up or burn villages in its path.The rocks tha
11、t erupt from the volcano usually dont damage anything because no one lives near the crater.第17页3.Why did the scientists have to get close to the volcano after it began erupting?The scientists needed to get samples of the lava so they could study them.4.What does the writer find impressive about volc
12、anoes even after studying them for 20 years?The author is impressed by the beauty of the eruption and also by its potential to cause great destruction.第18页Part 1(Para 1-2)Part 2(Para 3-4)Part 3(Para 5)The writers job and its importance The writers experience of watching the volcano eruptionThe reaso
13、ns for the writers enthusiasm about his jobFind out the main idea of each part(4m)第19页 Suppose you are a reporter of the 21st Century,and you are interview the writer.Work in pairs and make up a dialogue according to your understanding of the passage.Dialogue production(5m)第20页 Having learnt a littl
14、e more about the work of a volcanologist,do you think it is an occupation you would enjoy?Discuss your reasons with others in your class.Discussion(8m)第21页 Assignment(Homework)1.Find out words,expressions and sentences which you think are useful,important or difficult to understand.2.Finish exercise
15、s in Learning about Language.(Ex.1,2)第22页第23页第24页Unit 5 The Power of Nature 第25页1.I went to a tea house with tow friends last weekend but all they talked about was volcanoes.I was so _ that I fell asleep.2.A tourist very foolishly took a risk by walking right to the edge of an active_.3.I carefully
16、_ over the fallen rocks and returned to the car.4.Nothing can _ the experience of standing close to an active volcano for the first time.5.Can volcanologists predict when a volcano will_.6.The sight of hot lava entering the sea at dawn was_.boredvolcanomade my waycompare witheruptimpressiveCheck the
17、 answers to Ex.1 on page 35第26页 The eruption of Mount Vesuvius in 79AD took people in Pompeii by surprise.It was so quick and so severe that the town was soon covered in _ and _.Many houses in the town were _.It was an _ disaster for many people who could not get away in time.A writer named Pliny,wh
18、o was there during the _,described how lava was thrown into the air like a _._ many of the townspeople,_at the _ sight of Vesuvius eruption,stayed too long and failed to escape in time.burnt to the groundabsoluteashlavaeruptionfountain UnfortunatelyamazedfantasticCheck the answers to Ex.2 on page 36
19、第27页Mount Vesuvius This mountain has erupted more than 50 times since the eruption in 79 A.D.,when it buried Pompeii and its sister city,Herculaneum.After Pompeii was buried and lost to history,the volcano continued to erupt every 100 years until about 1037 A.D.,when it entered a 600-year period of
20、quiescence.In 1631,the volcano killed an additional 4000 unsuspecting inhabitants.第28页Examine the sentences below and tell the similarity and difference between these two sentences.Looking carefully at the ground,I made my way to the edge of the crater.Having experienced quite a few earthquakes in H
21、awaii already,I didnt take my notice.The present and perfect-ing form The ing form can be used as an adverbial in a sentence to give information about time,reasons or results.We use the construction having+past participle to refer to an action that took place before the time expressed by the main ve
22、rb.第29页Rewrite the sentences using the present or the perfect ing form of the underlined verbs.When they heard about the volcano they ran down to the village.After the scientists had studied the information they predicted that the lava would flow through the village.Hearing about the volcano,they ra
23、n down to the village.Having studied the information,the scientists predicted that the lava would flow through the village.第30页3.Having experienced earthquakes before,I wasnt frightened.4.Walking up in the middle of the night she saw her room was as bright as day.5.Having stopped the car,we immediat
24、ely put on our protective clothing.6.Having spent all night watching the volcano erupting,I was very tired the next day.7.Coming out of my house,I saw the volcano erupting.8.Never having seen a volcano erupting before,I was very excited.第31页Combine the pairs of sentences using the present or the per
25、fect ing form.2.Walking through the forest,you can find some unusual plants.3.Having been a teacher for 12 years,Charlotte knew how to keep children interested.4.Preferring not to go out that night,I made an excuse.We arrived at the party.We saw Carol standing along at the entrance.Arriving at the p
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