2022年必修三：Unit4Astronomythescienceofthestars导学案及答案 .pdf

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1、学习必备欢迎下载 高效预习探究案 一Warming up & Pre-reading 本节课学习知识早知道：对于要学的知识做到心中有底，这样才能更好的安排自己的学习步骤和学习时间，愿知识清单能够更好的帮助你进行自主学习！我们将要学习的学习内容：1. To encourage students to think and talk about astronomy. 2. Learn some new words and phrases. 能力目标：To develop students ability of creativity and imagination. To learn to talk

2、about astronomy in English. 语言目标：掌握重点词汇astronomy, astronomer, solar system, religion Tasks: Step 1: Lead-in and warming up Get the students to talk about astronomy, The students can talk freely as they like. 1. Are you interested in astronomy? Do you know something about it? Do you know about any fa

3、mous astronomers in the word? was the first to suggest that gravity is a force. developed a new idea of gravity and the theory of relativity. is most famous for his work on: black holes. Do you know something about solar system? Solar system is made up of and the objects that orbit it. These include

4、s and their , as well as asteroids (小行星 ), comets（慧星） , and meteors （流星） . 2. How many planets circle around the sun? a. What are they? (according to the order of the distance from the sun) b. There used to be nine planets in the solar system. One of the them can no longer be considered a planet. Wh

5、at s the name of the planet? Why did scientists remove it? 3. Is there life on these planets? Step 2: Think it over 1. How old is the universe? 2. (1)How did the universe begin? Different religion and culture has different ideas. What do you know? The following notes may be helpful. a. The story of

6、the Hopi people: The Four Creations. 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 1 页，共 6 页学习必备欢迎下载b. From China: The story of Pan Gu c. The Jewish / Christian / Muslim story (2) The universe is made up of stars, planets and other matter scattered throughout space. 3 How old is the earth? 4. What

7、made it possible for life to develop on the earth? 5. Which do you first think existed on the earth, plants or animals? 高效预习探究案 二Reading 一、热身问题1. Look at the pictures and the title of the reading passage. Predict what the reading will be about and what will be mentioned in the text? 二、速读课文，回答下列问题1.

8、How did the universe begin? 2. When did the dust settle into a solid globe to be the earth? 3. What began to appear on its surface when the earth cooled down after exploding? 4. What began to appear on the surface of the water many millions of years later? 5. How many years did dinosaurs existed on

9、the earth? When did they disappear? 三、精读课文，回答下列问题1.Put the order of development of life into a timeline. （1）Insects and amphibians appeared. （2）Dinosaurs speared. （3）The earth became a solid ball （4）Small plants grew on the water. （5）Reptiles appeared. （6）Plants began to grown on dry land. （7）The ea

10、rth was a cold of dust. （8）Water appeared on the earth. （9）Shellfish and other fish appeared. （10）The universe began with a: Big Bang. （11）Clever animals with hands and feet appeared. 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 2 页，共 6 页学习必备欢迎下载（12）Mammals appeared. 2、把每个段落与段落大意相搭配Para 1 A. The d

11、evelopment of plants and animals on the earth. Para 2 B. The arrival of humans and their impact on the earth. Para 3 C. A widely accepted theory about the formation of the universe. Para 4 D. The importance of water for life. Para 5 E. The formation of the earth. 四、讨论1. Why was the earth different f

12、rom the other planets? 2. Why did the plants grow before the animals came? 3. What problem is caused by human beings. 4. What should we do to deal with the problem? Say it out in detail. 五、与同桌讨论，理解下列长难句并尝试翻译成汉语1. What it was to become was uncertain until between 4.5 and 3.8 billion years ago when th

13、e dust settled into a solid globe. 句子结构分析：what 引导的是从句， what 在此从句中作表语。when 引导的是从句settle into 意为翻译：2. They were in time to produce carbon, nitrogen, water vapour and other gases, which were to make the earth s atmosphere. 句子结构分析：which 引导的是in time 意思是eg: If you keep on, you ll succeed in time. 翻译：3. It

14、 was not immediately obvious that water was to be fundamental to the development of life. 句子结构分析：that 引导的是从句， it 是be fundamental to 对是基本的翻译：4. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. 句子结构分析：w

15、hat 引导的是从句， what 在此从句中作believe 的that 引导的是从句，且不能略。翻译：六、课文缩写According to a widely accepted , the universe began with a “ Bing Bang ” After the 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 3 页，共 6 页学习必备欢迎下载“ Bing Bang ” , the earth was still just a cloud of . It didn t settled into a solid until betw

16、een 4.5 and 3.8 billion years ago. The earth loudly with fire and rock. They were in time to produce, many gases, which were to make the earth s . When it cooled down, water began to appear on its surface. The life began to . The first extremely small plants appeared on the surface of the water, and

17、 then and filled the oceans and seas with oxygen. It encouraged the deployment of early shellfish and sorts fish. Green plants, land animals, insects began to appear. After that dinosaurs developed and on the earth. Small clever animals appeared. They are too much carbon dioxide into the atmosphere.

18、 As a result, the earth may become too hot to live on. So whether life will continue on the earth will on whether this problem can be solved. 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 4 页，共 6 页学习必备欢迎下载Keys to Unit4 高效预习探究案 一Warming up & Pre-reading Step 1: Lead-in and warming up 1. Isaac Newton

19、 Albert Einstein Stephen Hawking the sun planets moons 2.a. eight planets / Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune b. The name is Pluto. Scientists now think it is too small to be called a planet. c. Different answers Step 2: Think it over 1. several billion years ago 2.(1) Di

20、fferent answers (2) stars, planets and other matter 3 between 4.5 and 3.8 million years ago 4. water 5. Different answers 高效预习探究案 二Reading 二、速读课文，回答下列问题1. The universe began with a “ Big Bang ” that threw matter in all directions.2. between 4.5 and 3.8 billion years ago. 3. water 4. the first extrem

21、ely small plants. 5. for more than 14 million years /65 million years ago. 三、精读课文，回答下列问题1.10 7 3 8 4 9 6 1 5 2 12 11 2、把每个段落与段落大意相搭配Para 1 C Para 2 E Para 3 D Para 4 A Para5 B 四、讨论1. Because the water remained on the earth. 2. Because plants provide oxygen for animals to breathe. 3. Human beings cau

22、sed global warming. 4. We should protect the environment and protect the earth五、与同桌讨论，理解下列长难句并尝试翻译成汉语1. 主语定语形成随后它会变成什么没人能知道，直到38-45 亿年前，这团尘埃才形成一个固体的球状物。2.非限制性定语从句最后，终于，总有一天精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 5 页，共 6 页学习必备欢迎下载最终产生了碳、氮气、小蒸气和其他多种气体，从而形成了地球的大气层。3. 主语形式主语水会对生命的发展起关键作用，这一点在当时并不明显。4. 主语宾语表语很多科学家相信， 由于地球上长期有水存在，它使得地球得以把有害有的气体和酸性物质溶解在海洋里。六、课文缩写theory dust globe exploded atmosphere. develop multiplied existed putting depend 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 6 页，共 6 页