人教版高中英语必修三 unit4 Astronomy the science of the stars reading 阅读赏析课课件（共27张ppt）

课件27张PPT。Unit 4Astronomy:the science of the starsHow much do you know about the universe?What are the names of the eight planets that circle the sun?solar system地球 ______
木星 ______
火星 ______
水星 ________海王星 _______
土星 ________
天王星 _______
金星 ________EarthJupiterMarsMercuryNeptuneSaturnUranusVenusOn which planet can we find life existence?
Why?basic things we
need to surviveairwaterfoodsunshineBecause there is …….on the earth.atmospheresoilproper temperaturenitrogen surface vapour atmosphereoxygencarbondioxidePre-readingDo you know how our life began on the earth?Do you know any ancient idea about the beginning of the universe? In Chinese culture… 　separates the sky from the earth and his whole body turned into all kinds of things in the universe.PanguskyearthThe Goddess Nuwa made the first man using the best mud and water according to her appearance.God created the world in seven days. In western culture…Day1 light and darkness
Day2 the sky
Day3 seas, trees
Day4 stars, the sun and the moon
Day5 animals
Day6 the first man (Adam) and the first woman (Eve)
Day7 Sabbath (安息日)
But one widely accepted theory
is that the universe began with a “Big Bang”.Reading
How life began on the earth ?Fast readingRead the passage quickly and find the main idea.A brief introduction on how the universe developed and how life began on the earth.Passage structureMain bodyPara 2: A widely accepted theory about the formation of the universe.The formation of the earth.The importance of water for life. The development of plants and animals on the earth.The arrival of humans and their impact on the earth.Para 1 Para 3: Para 4: Para 5: Careful readingPara 1: Para 2:
Para 3:
Para 4:
Para 5: A widely accepted theory about the formation of the universe.The formation of the earth.The importance of water for life.The development of plants and animals on the earth.The arrival of humans and their impact on the earth.Read the passage carefully and analyse its structure.earth, atmosphere and waterlife developmenthuman beings（ ）1 Insects and amphibians appeared.
（ ）2 Dinosaurs appeared.
（ ）3 The earth became a solid ball.
（ ）4 Small plants grew on the water.
（ ）5 Reptiles appeared.
（ ）6 Plants began to grow on dry land.
（ ）7 The earth was a cloud 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.
（ ）12 Mammals appeared.875）64110392 Put the order of development of life. 12 11 Lets review the evolution of life on the earth.Big Banga cloud of dust atmosphere The eartha solid globewaterwaterPlants in the waterShellfish and fishPlants on landInsects and amphibiansReptiles Dinosaurs Mammals humans came into being and spread all over the world.Post readingDiscuss the following questions.1. Why was the earth different from the other planets?3. Why is it wrong to show films with dinosaurs
and people together?2. Why did the plants grow before the animals came?Because the water remained on the earth.Because dinosaurs died out long before human beings developed on the earth.Because plants provided oxygen for animals to breathe.We are making the world better.We are making the world worse.Discussion solar energy plant trees recycle rubbish prevent desertificationsave water purify airWhat can we do take care of the earth?Whether life will continue on the earth depends on human beings.Only if we care will we help;
only if we help shall all be saved!