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1、astronomythescienceoftastronomythescienceofthestarshestars课件课件2 2Step 1 Lead in Look at two pictures , try to give as much information as possible. Unit4 Astronomy: thescience of the starsStep 2 Warming up Do you know how many planets circle around the sun in our solar system ? What are they? Can yo
2、u match the names with the planets?JupiterUranusNeptuneSaturnMercuryMarsEarthVenus水星水星 金星金星 地球地球 火星火星木星木星土星土星天王星天王星 海王星海王星Step 3 A quizWhats the end of the world ?Its “ D ”.Whats the beginning of the world?Its “ W ”. Step 4 Pre-reading Each religion and culture has its own ideas about how life began
3、 on earth. What do you know ? In China, we all know that Pangu separates the sky from the earth. The Goddess Nvwa mended the heaven and created human beings. In western culture, God created the world in six days.Pangu separates the sky from the earth.Nvwa makes human beings.God created man.上帝造人上帝造人
4、What is the passage about? Step 5 Reading How life began on the earth. While-readingListen to the tape of the reading passage and match the main idea for each paragraph.Main idea of each paragrapha.The importance of water for life b.The development of plants and animals on the earth c.The formation
5、of the earth d.d. A widely accepted theory about e. the formation of the universe dcab e. ThearrivalofhumansandtheirimpactontheearthParagraph5:Paragraph1:Paragraph2:Paragraph3:Paragraph4:e While-readingWork in pairs. Put the order of developmentof life into a timeline according to the reading passag
6、e. Put the order of development of life into a time line.A.Insects and amphibians appeared.B.The earth became a solid ball.C.Reptiles appeared.D.The earth was a cloud of dust.E.Shellfish and other fish appearedF.Dinosaurs appeared. G.Small plants grew on the water.H.Plants began to grow on dry land.
7、I.Water appeared on the earth.J.Mammals (including humans )appeared.DBIGEHACFJ While-readingThink about what you have read and make choices.Why was the earth different from other planets?A It produced a lot of heat. B.The water remained.C Water disappeared. D.It was the oldest planet.Why was life ab
8、le to develop on the earth but not on other planets?A The earth had a solid shape. B. The earth did not have harmful gases in its atmosphere.C The water stayed on the earth but not on other planets. D.The earth was not too hot and not too cold.ks5u精品课件Why did the plants grow before animals came?A An
9、imals needed plants to protect them from the sun. B Plants provided oxygen for animals to breathe.C Animals could hide from hunters in forest.D It was easier for plants to grow.What problem is caused by human beings?A They exist everywhere on the earth.B They cause global warming.C They find new met
10、hods of growing crops.D They enjoy hunting and fishing.ks5u精品课件 Step 6 Looking and thinking Look at the following pictures and try to understand more of the reading passage.A cloud of dustA solid globe Explode atmosphere waterCells separatePlants in the waterEarly shellfish and fishPlants on landoxy
11、genInsects and amphibiansReptiles Dinosaurs Mammals Man had evolved from apes. The development of lifeAs a student, what little things can we do for the earth? to prevent the earth from getting hotter and hotter to slow down the problem getting worse We have only one earth!We should take care of the
12、 earth!ks5u精品课件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!Step 8 Homework 1.Read aloud the reading passage and underline the useful phrases and sentence patterns.2.Finish off Ex1and Ex2 on P. 28. Step 5 Summing upHo
13、w life began on the earth1. small plants in water2.shellfish and all sorts of fish 3. green plants on land4. Insects (on land)5.amphibians (on land and in water) 6. forests7. Reptiles (on land)8. Dinosaurs (on land) 9. Mammals (on land) 10. small clever animals with hands and feet 11.humansWhat subj
14、ects do you learn at school?lChineselEnglish lmathematicslphysicslhistorylgeographylphysicslbiologylchemistrybrainstorminggeophysicsbiochemistry Task 3: Careful reading1. What was there on the earth before life could begin? Water vapour, carbon dioxide, oxygen, nitrogen and other gases. 2. Why do sc
15、ientists think there has never been life on the moon? Because there is no water on the moon. 3. Why did animals first appear in the seas? Because water allowed the earth to dissolve harmful gases into the oceans and seas. 4. Why did green plants help life to develop? Because green plants can take ca
16、rbon dioxide from the atmosphere and fill the air with oxygen. 5. Why were mammals different from other animals? They were different because they produced their young from within their bodies. 6. How did water come into being on the earth? The explosion of the earth produced water vapor, which turne
17、d into water when the earth cooled down.Water Air Life is the headspring of life.?How Life Began on the Earth Water_made it possible for life to begin to develop.WaterPlants encouraged the development of _.early shellfish and all sorts of fishLater _ appeared. land animals insectsamphibiansWhen plan
18、ts grew into forests, _ appeared for the first time.reptilesSome huge animals, called _, developed.dinosaursWhen dinosaurs disappeared, _ became more important. mammals came into being and spread all over the world.What life developed after mammals? Humans进入夏天，少不了一个热字当头，电扇空调陆续登场，每逢此时，总会想起进入夏天，少不了一个热
19、字当头，电扇空调陆续登场，每逢此时，总会想起那一把蒲扇。蒲扇，是记忆中的农村，夏季经常用的一件物品。记忆中的故那一把蒲扇。蒲扇，是记忆中的农村，夏季经常用的一件物品。记忆中的故乡，每逢进入夏天，集市上最常见的便是蒲扇、凉席，不论男女老少，个个手持乡，每逢进入夏天，集市上最常见的便是蒲扇、凉席，不论男女老少，个个手持一把，忽闪忽闪个不停，嘴里叨叨着一把，忽闪忽闪个不停，嘴里叨叨着“怎么这么热怎么这么热”，于是三五成群，聚在大树，于是三五成群，聚在大树下，或站着，或随即坐在石头上，手持那把扇子，边唠嗑边乘凉。孩子们却在周下，或站着，或随即坐在石头上，手持那把扇子，边唠嗑边乘凉。孩子们却在周围跑跑跳
20、跳，热得满头大汗，不时听到围跑跑跳跳，热得满头大汗，不时听到“强子，别跑了，快来我给你扇扇强子，别跑了，快来我给你扇扇”。孩。孩子们才不听这一套，跑个没完，直到累气喘吁吁，这才一跑一踮地围过了，这时子们才不听这一套，跑个没完，直到累气喘吁吁，这才一跑一踮地围过了，这时母亲总是，好似生气的样子，边扇边训，母亲总是，好似生气的样子，边扇边训，“你看热的，跑什么？你看热的，跑什么？”此时这把蒲扇，此时这把蒲扇，是那么凉快，那么的温馨幸福，有母亲的味道！蒲扇是中国传统工艺品，在是那么凉快，那么的温馨幸福，有母亲的味道！蒲扇是中国传统工艺品，在我国已有三千年多年的历史。取材于棕榈树，制作简单，方便携带，
21、且蒲扇的表我国已有三千年多年的历史。取材于棕榈树，制作简单，方便携带，且蒲扇的表面光滑，因而，古人常会在上面作画。古有棕扇、葵扇、蒲扇、蕉扇诸名，实即面光滑，因而，古人常会在上面作画。古有棕扇、葵扇、蒲扇、蕉扇诸名，实即今日的蒲扇，江浙称之为芭蕉扇。六七十年代，人们最常用的就是这种，似圆非今日的蒲扇，江浙称之为芭蕉扇。六七十年代，人们最常用的就是这种，似圆非圆，轻巧又便宜的蒲扇。蒲扇流传至今，我的记忆中，它跨越了半个世纪，圆，轻巧又便宜的蒲扇。蒲扇流传至今，我的记忆中，它跨越了半个世纪，也走过了我们的半个人生的轨迹，携带着特有的念想，一年年，一天天，流向长也走过了我们的半个人生的轨迹，携带着特有的念想，一年年，一天天，流向长长的时间隧道，袅长的时间隧道，袅结束
