人教版高一英语必修三Unit 4 Astronomy: the science of the stars Reading课件(36张)

课件35张PPT。Unit 4Unit 4
Astronomy:
the science of the stars1. To learn the basic knowledge about solar system
2. To understand the passage about how life began on the earth
3. To be able to give a brief introduction of the development of the Earth and the evolution of life on the Earth
4. To arouse students’ awareness to protect the EarthAstronomy is the scientific study of the universe and the heaven bodies (such as the sun, the moon, and stars), gas, and dust within it.What do you know about astronomy?Solar SystemWhat’s this?Do you know anything about the solar system?star 恒星planet 行星Which is a star? Which is a planet?What are the names of the eight planets that circle the sun?海王星
Neptune水星
Mercury 金星
Venus 地球
Earth 火星
Mars 木星
Jupiter 土星
Saturn天王星
Uranus How does the Sun produce energy?Is there intelligent life in the Universe?What do we know about planets around other stars?What is the eventual fate of the Sun?Where might we find life in the Solar System?What determines the surface temperature of a planet?Possible answers:What interests you in astronomy? Do you know any questions that astronomers are interested in?The origin of life on earth is a question that interests astronomers. What do you know about it?Each religion and culture has its own ideas about how life began on earth. What do you know?Pangu separates the sky from the earth.Chinese Version 1Nvwa made humans.Chinese Version 2The Biblical AccountWestern Version Day 1: God spoke and separated light from
darkness creating Day and Night.
Day 2: God spoke and separated the water
creating sky and ocean.
Day 3: God spoke and created dry land.
Day 4: God spoke and created the sun, moon and stars.
Day 5: God spoke and created living creatures in
the air and sea.
Day 6: God spoke and created the land animals and man.
Day 7: God rested and blessed this day calling it Holy. Indian VersionBrahma — the Hindu god of creationHe is the creator of the universe and all living beings are said to have evolved from him.Read the title and look at the pictures. Predict what the reading will be about.volcanic eruption
(火山喷发) The Evolution of Life on the EarthHow life began on the EarthName some important things that make the earth a place to live in.Read the text quickly and fill in the blanks.
?????The text mainly tells us the formation of the ________ and the development of ______ on it.earth?life Analyse the structure of the passage. Write down the main idea for each paragraph.A widely accepted theory about the formation of the universe
The formation of the earth
The importance of water for lifeParagraph 1: Paragraph 2: Paragraph 3: The development of plants and animals on the earth
The arrival of humans and their impact on the earthParagraph 4: Paragraph 5: Paras. 1~3: The formation of the earthexplodeatmospherewaterParas. 4~5: The development of lifeshellfishplantsinsectsamphibiansforestsreptilesdinosaursmammalshuman beingsPut the order of development of life
into a timeline. Use the reading passage to
help you.123456789101112BEGA?DHFCRead the text and combine the two halves of the sentences.1. The earth was in the shape of a cloud of dust before the “Big Bang”.
2. Carbon dioxide, nitrogen, water vapour and other gases formed the earth’s atmosphere.
3. The harmful gases and acids came from the oceans.Read the text and decide whether the following statements are True (T) or False (F).F TF 4. Mammals gave birth to young babies and produced milk for them.
5. Life on the earth has nothing to do with how people look after it.T F Think about what you have read and discuss these questions in pairs.1. Why was the earth different from other planets?
Because the water remained on the earth.
2. Why did the plants grow before the animals came?
Because plants provide oxygen for animals to breathe. 3. Why is it wrong to show films with dinosaurs and people together?
Because dinosaurs died out long before human beings developed on the earth.4. There used to be nine planets in the solar system. Recently scientists have decided that one of them can no longer be considered a planet. Do you know the name of that planet? Do you know why they removed it?
The name is Pluto. Scientists now think it is too small to be called a planet.
5. What problem is caused by human beings?
Human beings caused global warming.Read the passage again and underline all the discourse markers and sentence connectors.Discourse markers:
however, after that, next, later, finally, thus, as a result of this
Sentence connectors:
and, but, becauseTry to retell the development of life on the Earth. Use the activities in “careful reading” to help you.
You can use the discourse markers and sentence connectors to link up your speech.Obviously, we are facing some problems now. As teenagers what should we do to protect the earth? Read the last paragraph again and pay attention to the underlined sentences.Remember these three words:reducereuserecycleHow life began on earth is one of the biggest puzzles that scientists found hard to solve. What other puzzles are hidden in the passage? Find them out and do some research.