必修三unit4_astronomy-1-reading

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1、Unit 4 Astronomy:the science of the stars In our solar system eight planets circle around the sun.What are they?Can you match the names with the planets?Look at the picture and match the names with the planets.Warming upMercury Venus EarthMarsJupiterSaturnUranusNeptune金星金星地球地球水星水星土星土星木星木星天王星天王星海王星王星

2、火星火星Pre-readingThe origin of life on the 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 about it?Do you believe the passage tell you the truth about the beginning of life?Why?The begi

3、nning of the lifePangu separated Nvwa created God created the sky humans the world 盘古开天女娲造人上帝创世论China legend:Pangu separates the sky from the earth The development of the lifebreathwinds and cloudsvoice thunder left eye the sun right eye the moon blood the rivers veins the roads China legend:The God

4、dess Nuwa mended the heaven and created human beings from the clay(粘土粘土).Religious Beliefs According to Bible,God created the world in seven days.Day 1:God created Day and Night.Day 2:God created sky.Day 3:God created dry landthe earth,and seas.Day 4:God created tow great lights(the sun,the moon)and

5、 stars.Day 5:God created living things in the air and sea.Day 6:God created the land animals and the first man.Day 7:God rested and called this day Holy.Reading How Life Began on the EarthReading Reading How life began on the earthRead the text quickly and write down the main idea for each paragraph

6、.While-readingMain idea of each paragraphParagraph 1:Paragraph 2:Paragraph 3:Paragraph 4:a.The importance of water for life b.The development of plants and animals on the earth c.The formation of the earth d.A widely accepted theory about the formation of the universe dcab e.The arrival of humans an

7、d their impact on the earth Paragraph 5:eRead the paragraph 2 and 3 carefully and think about how the earth come into being.While-readingBig Banga cloud of dustA solid globeexploded with fire and rockproduce the water vapour,carbon dioxide-atmosphereHow did the earth come into being?Para2,3cooled do

8、wnwater appearedDissolved harmful gases and acidThe development of life Para4,5extremely small plants Firstearly shellfishStage 1:The development of life in waterall sorts of fish green plants on land insects on landStage 2:The development of life on land Nextamphibians on land and in the waterGreen

9、 plants grew into forests Later reptiles(爬行动物爬行动物)on land dinosaurs on land(1)What life developed after forests appeared?After thatmammals（哺乳动物）（哺乳动物）on land(2)What life developed after dinosaurs?small clever animals(3)What life developed after mammals?FinallyWork in pairs.Put the order of developme

10、ntof life into a timeline.While-reading10 73 8 4 9 6 1 5 2 12 111.Insects and amphibians appeared.3.The earth became a solid ball.5.Reptiles appeared.7.The earth was a cloud of dust.9.Shellfish and other fish appeared.11.Clever animals with hands and feet appeared.2.Dinosaurs appeared.4.Small plants

11、 grew on the water.6.Plants began to grow on dry land.8.Water appeared on the earth.10.The universe began with a Big Bang.12.Mammals appeared.1.Why was the earth different from the other planets?Because water remained on the earth.2.Why did the plants grow before the animals came?Because plants prov

12、ided 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 cons

13、idered 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 cause global warming.After the ,the earth was just .Slowly,it began to combine into m

14、oving around the sun.After it exploded loudly,the explosion produced ,_and other gases.“Big Bang”a cloud of dust carbon,nitrogenthe water vapour a solid globeRetell As the earth cooled down,_ began to appear on its surface.Because of water and other useful gases,and later_ appeared.Many millions of

15、years later,began to grow ,which led to the appearance of .watersmall plants grewshellfish and other fishinsects and amphibiansthe first plantson land When the plants grew into forests,.Later,.When they disappeared,became more important.At last,_ _ have became the most important animals on the plane

16、t.reptiles appeareddinosaurs developed mammalshumanbeings Group Discussion1.What problems are caused by human beings?2.How to solve these problems?Homework1.Find out language points and noun clauses in the reading passage.Discuss and analyse them.2.Writing:Rewrite the passage and use as many language points and new words as possible.We have only one earth!We should take care of the earth!