人教版高中英语必修三件.pptx

Module III Unit 4Astronomy玉树二高2014级高一十四班 I.Warming upI.Warming up1.Whats the meaning of the word“Astronomy”?2.Do you know the following terms?star（）planet（）the sun/moon/earth（）solar system（）3.How many planets are in the solar system?I.Warming upI.Warming up1.Whats the meaning of the word“Astronomy”?the science of stars;2.Do you know the following terms?star（恒星）planet（行星）the sun/moon/earth（太阳、月亮、地球）solar system（太阳系）3.How many planets are there in the solar system?8Scientists now think Pluto is too small to be called a planetThe names of eight planetsThe names of eight planets1)1)水星水星 MercuryMercury2)2)金星金星 VenusVenus3)3)地球地球 EarthEarth4)4)火星火星 MarsMars5)5)木星木星 JupiterJupiter6)6)土星土星 SaturnSaturn7)7)天王星天王星 UranusUranus8)8)海王星海王星 NeptuneNeptune海王星海王星 Neptune水星水星Mercury 金星金星Venus 地球地球Earth 火星火星Mars 木星木星Jupiter 土星土星Saturn天王星天王星Uranus In this unit,well learn something In this unit,well learn something more scientificmore scientific1.Whats the title of the text?how life began on the earth2.From the title,we can predict that the text may tell us the origin of life on the earth.Do you know some stories about it?Pangu separates the sky from the earthPangu separates the sky from the earth Nvwa made humansNvwa made humansRead the passage quickly and answer the Read the passage quickly and answer the questionsquestions1.When did the“Big Bang”happen?2.What form was the earth after the“Big Bang”?3.What made up the earths atmosphere？4.How did water come into being on the earth?5.Whats the significance of the presence of water on the earth?6.What was important to the development of fish?7.What made possible the rise of mammals on the earth?8.Why are mammals different from all life forms in the past?Phrases and Useful ExpressionsPhrases and Useful Expressions1.1.circle around circle around 绕绕转转2.2.according toaccording to 根据根据3.3.a widely accepted theory a widely accepted theory 熟知的理论熟知的理论4.4.in all directions in all directions 向着四面八方向着四面八方5.5.in time in time 及时；终于及时；终于6.6.cool down cool down 冷却冷却7.7.be fundamental tobe fundamental to 对对关键关键8.8.a chain action a chain action 连锁反应连锁反应9.9.make it possible formake it possible forto doto do 使使可能可能10.10.give birth togive birth to 生育生育11.prevent11.prevent from from 阻止阻止做做12.millions of years to come 12.millions of years to come 未来的几百万年未来的几百万年1.When did the“Big Bang”happen?1.When did the“Big Bang”happen?It happened several billion years agoIt happened several billion years ago.ScanningRead the passage quickly and answer Read the passage quickly and answer the questionsthe questions2.2.What What form form was was the the earth earth after after the the“Big“Big Bang”?Bang”?The earth was still just a cloud of dustThe earth was still just a cloud of dust.3.3.What What made made up up the the earths earths atmosphere atmosphere after after the earth exploded?the earth exploded?Carbon,Carbon,nitrogen,nitrogen,water water vapour vapour and and other other gasesgases.4.4.How How did did water water come come into into being being on on the the earth?earth?As As the the earth earth cooled cooled downdown after after it it exploded,water came into beingexploded,water came into being.5.5.Whats Whats the the significance significance of of the the presence of water on the earth?presence of water on the earth?It It allowed allowed the the earth earth to to dissolve dissolve harmful harmful gases gases and and acids acids into into the the oceans oceans and and seas.seas.6.6.What What was was important important to to the the development development of of fish?fish?oxygen.7.7.What What made made possible possible the the rise rise of of mammals mammals on on the earth?the earth?The disappearance of dinosaurs made the possible the rise of mammals on the earth.8.8.Why Why are are mammals mammals different different from from all all life life forms in the past?forms in the past?They gave birth to young baby animals and produced milk to feed them.Close readingI.I.Read Read the the passage passage carefully carefully and and match match the the main main idea idea with each paragraph.with each paragraph.Para.1 Para.1 A.A.The formation(The formation(形成形成)of the earth.)of the earth.Para.2 Para.2 B.B.The importance of water for life.The importance of water for life.Para.3 Para.3 C.C.A widely accepted theory about A widely accepted theory about the formation of the universe.the formation of the universe.Para.4 Para.4 D.D.The arrival of humans and The arrival of humans and their impact on the earth.their impact on the earth.Para.5 Para.5 E.E.The development of plants The development of plants and animals on the earth.and animals on the earth.True(T)or False(F).True(T)or False(F).1.The earth appeared before the Big Bang happened.2.The original atmosphere consisted of nitrogen and oxygen.3.The main difference between the earth and other planets is that there is water on the earth.4.Life began in water and then on land.FFTT Summary SummaryWhat do we learn today?Summary SummaryHow life began on the earth.Put the order of development of Put the order of development of life into a timeline.Use the life into a timeline.Use the reading passage to help you.reading passage to help you.1.Insects and amphibians appeared.(10)2.Dinosaurs appeared.()3.The earth became a solid ball.()4.Small plants grew on the water.(8)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.(1)9.Shellfish and other fish appeared.()10.The universe began with a Big Bang.()11.Clever animals with hands and feet appeared.(12)12.Mammals appeared.()discussing discussingWhat should we do for our earth?You can use the following words or You can use the following words or phrases to help you:phrases to help you:prevent from /harmful global warming/carbon dioxide /depend on as a result /in turn Homework Homework1.Find the difficulties in the passage.2.Finish Learning about Language part on Page28.EndThankyou