必修三unit4warmingupandreading修改终定PPT学习课件

1、Unit 4Unit 4 Astronomy: Astronomy: the science of the starsthe science of the stars How Life Began on the Earth Each religion and culture has its own ideas about how life began on earth. What do you know? In China, we all know that Pangu separates the sky from the earth. Pre-reading Pangu separates

2、the sky from the earth Pangu separated the earth and sky with an ax. After he died, his breath became wind and cloud; his voice became thunder and his left eye sun and right one moon; arms and legs became edges and mountains; blood became rivers and tendon (筋脉) became roads; muscles became fields an

3、d hair stars; teeth and bones became metals, pearls and jade; sweat became rain. The beginning of the life Pangu separated Nvwa created God created the sky humans the world 盘古开天 女娲造人 上帝创世论 The Biblical Account Day 1: God spoke and separated light from darkness creating Day and Night Day 2: God spoke

4、 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 cal

5、ling it Holy PhysicsPhysics ChemistryChemistry BiologyBiology Geology Geology MathematicsMathematics MedicineMedicine BiochemistryBiochemistry GeophysicsGeophysics AstronomyAstronomy is the scientific study of the universe and the heaven bodies (such as the sun, the moon, and stars), gas, and dust w

6、ithin it. eight planets many comets other objects Read the title and look at the pictures. Predict what the reading will be about. Pre-reading Reading How life began on the earth Skimming Reading strategy(策略): Go through the passage quickly to get the main idea of each paragraph. Skim the passage an

7、d match the main idea with each paragraph. Para. 1 The formation(形成) of the earth. Para. 2 The importance of water for life. Para. 3 A widely accepted theory about the formation of the universe. Para. 4 The arrival of humans and their impact on the earth. Para. 5 The development of plants and animal

8、s on the earth. Read paragraph 1-3 and find out how life began on the earth. Scanning A cloud of dustA cloud of dust Combine into a Combine into a solidsolid ball ball ExplodeExplodewith fire & rockwith fire & rock (produce H(produce H2 2O, COO, CO2, 2,O O2, 2, N N2, 2, other gases) other gases) atm

9、osphereatmosphereCool downCool down water appearedwater appeared dissolve harmful gases into dissolve harmful gases into Life beganLife began Life developedLife developed Read paragraph 4-5 and find out how life evolved on the earth. 1. Small plants in water2 ._ and all sorts of fish 3. Green _ on l

10、and 4. _ (on land) 5. Amphibians (on land and in _) 6. Plants grew into _. 8. _ (on land) 9. _ (on land) Have a try: Talking about the development of life 7. _ (on land) 10. _ (small clever animals on land) Shellfish Insects water plants forests Reptiles Dinosaurs Mammals Human beings Put the order

11、of development of life into a timeline. (exercise 2 on P27) （ ）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

12、Water appeared on the earth. （ I 9 Shellfish and other fish appeared. （ ）10 The universe began with a “Big Bang”. （ ）11 Clever animals with hands and feet appeared. （ ）12 Mammals apeared. 8 7 5） 6 4 1 10 3 9 2 Detailed reading Put the order of development of life into a time line. 12 11 Close readin

13、g 1. Why was the earth different from the other planets? 2. Why did the plants grow before the animals came? 3. Why is it wrong to show films with dinosaurs and people together? 4. There used to be nine planets in the solar system. Recently scientists have decided that one of them can no longer be c

14、onsidered a planet. Do you know the name of that planet? Do you know why they removed it? 5. What problem is caused by human beings? Close reading 1. Why was the earth different from the other planets? Because water remained on the earth. The significance(意义) of the continued presence of water is th

15、at it allowed the earth to dissolve harmful gases and acids into the oceans and seas. Close reading 2. Why did the plants grow before the animals came? Because plants provided oxygen for animals to breathe. 3. Why is it wrong to show films with dinosaurs and people together? Because dinosaurs died o

16、ut long before human beings developed on the earth. Close reading 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. Sci

17、entists now think it is too small to be called a planet. 5. What problem is caused by human beings? Human beings cause global warming. How to protect the earth and make it a better place to live on? Talking bar 找出课文中所有的名词性（主语、宾语、表语、 同位语）从句，并指出“连接词”及其在从句 中所做的成分！ eight planets many comets other object

18、s Read the title and look at the pictures. Predict what the reading will be about. Pre-reading Read paragraph 1-3 and find out how life began on the earth. Scanning （ ）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 cl