新外研版初中英语八下Unit5 阅读1 Secrets caught in time 课件

这是一份新外研版初中英语八下Unit5 阅读1 Secrets caught in time 课件，共48页。
Unit 5 Looking into natureStarting out ＆ Reading 1 Look at the picture and answer the questionsWhat can you see in the picture？I can see a man standing in the desert at night. He is holding a flashlight and shining it into the starry sky. The desert is golden, and the sky is dark blue with many stars.What does the picture make you feel？The picture makes me feel peaceful and hopeful. The bright light in the dark night looks warm and brave. It also makes me feel free because the desert is wide and quiet. Answer the questionWhat do you know about nature？In this unit, let's look into nature exploration. How can we explore nature? What are some of its unsolved secrets? What is the spirit of nature exploration? By the end of this unit, you will make a poster about an achievement in nature exploration.Nature is like a big green home. In the rainforest, there are many kinds of plants and animals. The air is fresh, and the river is clear. It looks very amazing.Learning objectivesAfter completing the unit,you will be able to：use words and expressions in the unit to talk about nature exploration.use object clauses with that, if and whether to describe discoveries in nature exploration.describe the spirit of nature exploration.Look at the pictures and answer the questionsWhat do you know about this person?Li ShizhenLi Shizhen: He was a great Chinese doctor and scientist in the Ming Dynasty. He wrote Bencao Gangmu (Compendium of Materia Medica), a very important book about traditional Chinese medicine.Look at the pictures and answer the questionsCharles DarwinWhat do you know about this person?He was a British scientist. He is famous for the theory of evolution, and his book On the Origin of Species changed how people think about life on Earth.Li Shizhen: He was a great Chinese doctor and scientist in the Ming Dynasty. He wrote Bencao Gangmu (Compendium of Materia Medica), a very important book about traditional Chinese medicine.Look at the pictures and answer the questionsWang ZhenyiWhat do you know about this person?She was a Chinese female scientist in the Qing Dynasty. She studied astronomy（天文学） and math, and she explained things like lunar eclipses（月食） clearly to others.He was a British scientist. He is famous for the theory of evolution, and his book On the Origin of Species changed how people think about life on Earth.Look at the pictures and answer the questionsWhat do they have in common?They are all great explorers of nature. They loved nature, kept curious, and studied it carefully. They tried hard to find the secrets of nature and shared their findings with the world.Watch the video and answer the questionsWhat secrets of nature are mentioned in the video？Which one do you want to explore more？What lives in the deepest parts of the ocean? Is there life among the stars? Why do we sleep?Reading 1Unit 5 Secrets caught in timeLearning objectivesWords and expressionsdinosaurfeatherfeather-coveredlizardamberwhethernorthern[ˈdaɪnəˌsɔː][ˈfeðə] [ˈlɪzəd] [ˈæmbə][ˈweðə] [ˈnɔːðən] n. 恐龙n. 羽毛羽毛覆盖的n. 蜥蜴n. 琥珀conj. 是否adj. 北部的Words and expressionsspeciesunknownAfricanbelieffullyunlockunlock the secrets of sth[ˈspiːʃɪz] [ʌnˈnəʊn] ['æfrɪkən][bɪˈliːf] [ˈfʊlɪ] [ʌnˈlɒk]n. 物种adj. 不知道的adj. 非洲的，非洲人的n. 观点adv. 完全地，充分地v. 揭开揭开某事的秘密Words and expressionsnewspaperwritingstylemethodtextaliveargument[ˈnjuːzˌpeɪpə] [ˈraɪtɪŋ][staɪl] [ˈmeθəd] [tekst][əˈlaɪv][ˈɑːɡjʊmənt]n. 报纸n. 写作，著作n. 风格n. 方法，办法n. 文字材料adj. 有活力的n. 论点，论据Lead inPre-readingWhile-readingPost-readingSummaryLook at the title and the pictures and answer the questions. Use the words and expressions to help you.1. What are they?a window on the pastunlockdiscoveryThey are two pieces of amber.changekeysecrets of natureprove2. Is amber things in the past or things in the future?It’s about things in the past.Secrets caught in timeLead inPre-readingWhile-readingPost-readingSummaryLook at the title and the pictures and answer the questions. Use the words and expressions to help you.a window on the pastunlockdiscoverychangekeysecrets of natureprove3. What is the passage about？It's about the ________ ________ ________ in amber. Amber is a ________ to ________ ________ ________ ________ ________ ________, and it helps us make new ____________ about old life.secretsofnaturekeyunlockawindowonthepastdiscoveriesSecrets caught in timeLead inPre-readingWhile-readingPost-readingSummaryThe formation of amberAmber is made from the resin（树脂） of old trees. When small insects land on the sticky resin, they get stuck. Over millions of years, the resin is buried under dirt and rocks. High pressure and heat change it into hard, yellow stone. This is how amber forms, keeping the little creatures（生物） safe inside forever. Lead inPre-readingWhile-readingPost-readingSummary Divide the passage into three parts and answer the question.BeginningBodyEndingPart 1：Paragraph ________Part 2：Paragraph ________Part 3：Paragraph ________12-451Imagine a dinosaur in an ancient forest. It is running around, looking for its next meal. With an angry cry, it opens its mouth, raises its beautiful feather-covered arms, and...2 Wait, feathers on a dinosaur? For hundreds of years, people believed that dinosaurs looked like huge lizards. Just look at all those dinosaurs in books, films and TV shows! However, thanks to a piece of amber, scientists now know that this idea is wrong. In the amber from Southeast Asia, they found the tail of a dinosaur - with feathers.3These beautiful golden stones quietly keep pieces of the past. They can tell us whether dinosaurs had feathers, but that's not all. They also help us understand that life on earth has always changed. A piece of amber from Northern Europe, for example, holds a flower. This species no longer grows in this area. But the find proves that it did 35 million years ago. In the future, amber may also help us discover if other species have changed over time.4Thanks to amber, more than 300 unknown species have been discovered. In a piece of amber from Africa, scientists found 13 ants. Research shows that they are a completely new species. Scientists used to believe that ants came from the northern half of the earth. The discovery of this African species has changed old beliefs about the history of ants. Who knows whether this piece of amber will tell us more secrets?5 As a window on the past, amber has been much studied. However, it's still not fully understood. We should put more effort into research. Then we can use this key to unlock more secrets of nature.BeginningBodyEndingHow many supporting details did the author use to tell the secrets caught in time by ambers?Three.Lead inPre-readingWhile-readingPost-readingSummaryMatch the main idea of each partBeginningBodyEndingSupporting detail 1Supporting detail 2Supporting detail 3Amber shows us what ancient species looked like.Amber is a key to nature’s secrets and we need more study.Amber shows life on Earth has changed over time.It describes a feathered dinosaur looking for food.Amber helps us discover new species.Let’s read each part one by one！Lead inPre-readingWhile-readingPost-readingSummaryRead the beginning carefully and finish the task1Imagine a dinosaur in an ancient forest. It is running around, looking for its next meal. With an angry cry, it opens its mouth, raises its beautiful feather-covered arms, and...Write T for true or F for false and correct the false.The dinosaur in the ancient forest has no feathers.The dinosaur is looking for its next meal in the forest.The dinosaur is sleeping in the ancient forest.The dinosaur in the ancient forest has feathers.The dinosaur is running in the ancient forest.Lead inPre-readingWhile-readingPost-readingSummaryRead the supporting detail 1 carefully and finish the tasks2 Wait, feathers on a dinosaur? For hundreds of years, people believed that dinosaurs looked like huge lizards. Just look at all those dinosaurs in books, films and TV shows! However, thanks to a piece of amber, scientists now know that this idea is wrong. In the amber from Southeast Asia, they found the tail of a dinosaur - with feathers.Fill in the blanksAmber shows us 1_____________ caught in timeIt shows us what ancient species looked like.2_____________ a piece of amber, scientists know that dinosaurs had feathers.secretsThanks toLead inPre-readingWhile-readingPost-readingSummaryRead the supporting detail 1 carefully and finish the tasks2 Wait, feathers on a dinosaur? For hundreds of years, people believed that dinosaurs looked like huge lizards. Just look at all those dinosaurs in books, films and TV shows! However, thanks to a piece of amber, scientists now know that this idea is wrong. In the amber from Southeast Asia, they found the tail of a dinosaur - with feathers.Answer the questions1. What’s in the Amber？2. Where was it found？3. What did scientists find through it？4. What secret does it tell？A dinosaur tail with feathers.In Southeast Asia.Dinosaurs had feathers.What dinosaurs looked like.Lead inPre-readingWhile-readingPost-readingSummaryRead the supporting detail 2 carefully and finish the tasks3These beautiful golden stones quietly keep pieces of the past. They can tell us whether dinosaurs had feathers, but that's not all. They also help us understand that life on earth has always changed. A piece of amber from Northern Europe, for example, holds a flower. This species no longer grows in this area. But the find proves that it did 35 million years ago. In the future, amber may also help us discover if other species have changed over time.Fill in the blanksAmber shows us secrets caught in timeIt helps us understand that life on earth has 3_________________A piece of amber proves that a species of flower grew in Northern Europe 4_____________ years ago. always changed35 millionLead inPre-readingWhile-readingPost-readingSummaryRead the supporting detail 2 carefully and finish the tasksAnswer the questions1. What’s in the Amber？2. Where was it found？3. What did scientists find through it？4. What secret does it tell？A flower.In Northern Europe.The flower grew there 35 million years ago.Life on earth has always changed.3These beautiful golden stones quietly keep pieces of the past. They can tell us whether dinosaurs had feathers, but that's not all. They also help us understand that life on earth has always changed. A piece of amber from Northern Europe, for example, holds a flower. This species no longer grows in this area. But the find proves that it did 35 million years ago. In the future, amber may also help us discover if other species have changed over time.Lead inPre-readingWhile-readingPost-readingSummaryRead the supporting detail 3 carefully and finish the tasks4Thanks to amber, more than 300 unknown species have been discovered. In a piece of amber from Africa, scientists found 13 ants. Research shows that they are a completely new species. Scientists used to believe that ants came from the northern half of the earth. The discovery of this African species has changed old beliefs about the history of ants. Who knows whether this piece of amber will tell us more secrets?Fill in the blanksAmber shows us secrets caught in timeIt helps us discover new species.More than 300 5_____________ species have been discovered. unknownScientists found a new species of 5_____________ in a piece of smber from Africa.antLead inPre-readingWhile-readingPost-readingSummaryRead the supporting detail 3 carefully and finish the tasksAnswer the questions1. What’s in the Amber？2. Where was it found？3. What did scientists find through it？4. What secret does it tell？13 ants.In Africa.The ants are a completely new species. Ants did not only come from the half of the earth, they also lived in Africa.There are many unknown species for us to discover.4Thanks to amber, more than 300 unknown species have been discovered. In a piece of amber from Africa, scientists found 13 ants. Research shows that they are a completely new species. Scientists used to believe that ants came from the northern half of the earth. The discovery of this African species has changed old beliefs about the history of ants. Who knows whether this piece of amber will tell us more secrets?Lead inPre-readingWhile-readingPost-readingSummaryRead the ending carefully and finish the tasks5 As a window on the past, amber has been much studied. However, it's still not fully understood. We should put more effort into research. Then we can use this key to unlock more secrets of nature.Fill in the blanksAmber is a(n) 7_____________ on the past, and a key to unlock more secrets of 8_____________.windownatureAnswer the questions1. What does the writer compare amber to？A window on the past and a key to unlock more secrets of nature.Lead inPre-readingWhile-readingPost-readingSummaryThink and share1. What do you think of Paragraph 1? Why does the writer begin like this?Paragraph 1 is very interesting and exciting. The writer begins with a vivid scene of a dinosaur to catch the readers' attention and make the text lively. It also creates a surprise to lead into the main topic about dinosaurs and feathers.Lead inPre-readingWhile-readingPost-readingSummaryChoose one part to retell.BeginningBodyEndingSupporting detail 1Supporting detail 2Supporting detail 3Feathered dinosaurLook for foodIn an ancient forestA dinosaur tail with feathers.In Southeast Asia.Dinosaurs had feathers.What dinosaurs looked like.A flower.In Northern Europe.35 million years ago.Life on earth has always changed.13 ants.In Africa.A new species.There are many unknown species for us to discover.A window on the past.We need more study.Lead inPre-readingWhile-readingPost-readingSummaryWork in pairs and think about the questions“What are some other ways for you to learn about nature’s secrets？”Try to imitate the structure of the passage.Student A：Write down the beginning.Student B：Write down the supporting detail 1.Student C：Write down the supporting detail 2.Student D：Write down the supporting 3.Student E：Write down the ending.Student F：Share the passage in front of the class.Team work for 6 students a group Ways to learn about nature’s secrets Nature is full of amazing secrets, and we can learn about them in many different ways. First, we can _______________. They tell us facts about _______________.Second, we can _______________. They show us how _______________.Third, we can _______________. We can look at _______________. By using these ways, we can open our eyes to the beauty of nature and know more about the world around us.Possible draftLead inPre-readingWhile-readingPost-readingSummaryWork in pairs and think about the questions“What are some other ways for you to learn about nature’s secrets？”Try to imitate the structure of the passage.ExampleLead inPre-readingWhile-readingPost-readingSummaryWork in pairs and think about the questions“What are some other ways for you to learn about nature’s secrets？”Try to imitate the structure of the passage.Student A：Write down the beginning.Student B：Write down the supporting detail 1.Student C：Write down the supporting detail 2.Student D：Write down the supporting 3.Student E：Write down the ending.Student F：Share the passage in front of the class.Team work for 6 students a group Ways to learn about nature’s secrets Nature is full of amazing secrets, and we can learn about them in many different ways. First, we can _______________. They tell us facts about _______________.Second, we can _______________. They show us how _______________.Third, we can _______________. We can look at _______________. By using these ways, we can open our eyes to the beauty of nature and know more about the world around us.Possible draftLead inPre-readingWhile-readingPost-readingSummaryShow timeAssessmentCorrect grammarLogical thinkingFluent expressionIncluding three supporting detailsLead inPre-readingWhile-readingPost-readingSummary( ) 1. Choose where you are most likely to read this passage.A. In a popular science magazine about findings in nature.B. In a newspaper report on exhibitions about dinosaurs.C. In a sci-fi book about travelling 160 million years into the past.( ) 2. What did people traditionally believe about dinosaurs according to the passage?A. They had feathers and could fly.B. They were closely related to ants.C. They lived mainly in Southeast Asia.D.They looked like huge lizards.Time limited test（5 minutes）Lead inPre-readingWhile-readingPost-readingSummary( ) 3. What can be inferred from the discovery of the African amber with 13 ants?A. Ants first appeared in Africa.B. Scientists’ previous ideas about ant origins were incorrect.C. Ants have not changed over millions of years.D. All ants come from the northern half of the earth.( ) 4. Which of the following statements is TRUE according to the passage?A. Amber can only be found in Asia and Africa.B. The dinosaur tail in the amber had no feathers.C. Amber has helped discover over 300 new species.D. Scientists have fully understood how amber works.Time limited test（5 minutes）Lead inPre-readingWhile-readingPost-readingSummary( ) 5. What is the main purpose of the last paragraph?A. To explain how amber is formed.B. To encourage more research on amber.C. To list all the secrets amber has revealed.D. To compare amber with other fossils.Time limited test（5 minutes）( ) 1. Choose where you are most likely to read this passage.A. In a popular science magazine about findings in nature.B. In a newspaper report on exhibitions about dinosaurs.C. In a sci-fi book about travelling 160 million years into the past.Lead inPre-readingWhile-readingPost-readingSummaryTime limited test（5 minutes）5 As a window on the past, amber has been much studied. However, it's still not fully understood. We should put more effort into research. Then we can use this key to unlock more secrets of nature.science fiction 科幻小说( ) 2. What did people traditionally believe about dinosaurs according to the passage?A. They had feathers and could fly.B. They were closely related to ants.C. They lived mainly in Southeast Asia.D.They looked like huge lizards.Lead inPre-readingWhile-readingPost-readingSummaryTime limited test（5 minutes）2 Wait, feathers on a dinosaur? For hundreds of years, people believed that dinosaurs looked like huge lizards. Just look at all those dinosaurs in books, films and TV shows! However, thanks to a piece of amber, scientists now know that this idea is wrong. In the amber from Southeast Asia, they found the tail of a dinosaur - with feathers.( ) 3. What can be inferred from the discovery of the African amber with 13 ants?A. Ants first appeared in Africa.B. Scientists’ previous ideas about ant origins were incorrect.C. Ants have not changed over millions of years.D. All ants come from the northern half of the earth.Lead inPre-readingWhile-readingPost-readingSummaryTime limited test（5 minutes）从...中推断4Thanks to amber, more than 300 unknown species have been discovered. In a piece of amber from Africa, scientists found 13 ants. Research shows that they are a completely new species. Scientists used to believe that ants came from the northern half of the earth. The discovery of this African species has changed old beliefs about the history of ants. Who knows whether this piece of amber will tell us more secrets?起源( ) 4. Which of the following statements is TRUE according to the passage?A. Amber can only be found in Asia and Africa.B. The dinosaur tail in the amber had no feathers.C. Amber has helped discover over 300 new species.D. Scientists have fully understood how amber works.Lead inPre-readingWhile-readingPost-readingSummaryTime limited test（5 minutes）3These beautiful golden stones quietly keep pieces of the past. They can tell us whether dinosaurs had feathers, but that's not all. They also help us understand that life on earth has always changed. A piece of amber from Northern Europe, for example, holds a flower. This species no longer grows in this area. But the find proves that it did 35 million years ago. In the future, amber may also help us discover if other species have changed over time.2 Wait, feathers on a dinosaur? For hundreds of years, people believed that dinosaurs looked like huge lizards. Just look at all those dinosaurs in books, films and TV shows! However, thanks to a piece of amber, scientists now know that this idea is wrong. In the amber from Southeast Asia, they found the tail of a dinosaur - with feathers.4Thanks to amber, more than 300 unknown species have been discovered. In a piece of amber from Africa, scientists found 13 ants. Research shows that they are a completely new species. Scientists used to believe that ants came from the northern half of the earth. The discovery of this African species has changed old beliefs about the history of ants. Who knows whether this piece of amber will tell us more secrets?5 As a window on the past, amber has been much studied. However, it's still not fully understood. We should put more effort into research. Then we can use this key to unlock more secrets of nature.( ) 5. What is the main purpose of the last paragraph?A. To explain how amber is formed.B. To encourage more research on amber.C. To list all the secrets amber has revealed.D. To compare amber with other fossils.  Lead inPre-readingWhile-readingPost-readingSummaryTime limited test（5 minutes）5 As a window on the past, amber has been much studied. However, it's still not fully understood. We should put more effort into research. Then we can use this key to unlock more secrets of nature.Lead inPre-readingWhile-readingPost-readingSummaryReview what we have learnt todayLead inPre-readingWhile-readingPost-readingSummaryDiscuss in group“How did the dinosaurs become extinct(灭绝的)?”Most scientists believe dinosaurs died out because a huge meteor（流星，陨石） hit the Earth. The crash（碰撞） caused dust and smoke to cover the sky for a long time. Plants could not get sunlight and died. Dinosaurs had no food to eat. The weather became very cold too. Without enough food and warm weather, dinosaurs could not live and finally disappeared.However, many details still need to be confirmed（确认）.Do you know any other mysterious（神秘的） things in nature?Scientists still don't know why some animals, like whales, suddenly beach themselves. Why many ships and planes have disappeared without reason in Bermuda Triangle. No one is sure how some birds can migrate（迁徙） thousands of miles without getting lost. Lead inPre-readingWhile-readingPost-readingSummary[ʌnˈnəʊn] [ˈraɪtɪŋ] lizard羽毛覆盖的揭开某事的秘密adj. 非洲的，非洲人的methodspeciesdinosaurWord flash[ˈfeðə] [ˈfʊlɪ] v. 揭开newspaper[ˈweðə]adj. 北部的beliefn. 风格[tekst]adj. 有活力的argumentLead inPre-readingWhile-readingPost-readingSummaryHomework