Reading HOW LIFE BEGAN ON THE EARTH

1. Reading HOW LIFE BEGAN ON THE EARTH

2. Warming up What are the names of the eight planets that circle our sun?

3. 火星 Mars 金星 Venus 地球 Earth 水星 Uranus 天王星 Neptune 木星 Mercury 土星 Jupiter 海王星 Saturn

4. A Quiz Game 1. How old is the earth? A. About 3.5 billion years B. About 4.5 billion years C. About 5.5 billion years D. About 6.5 billion years 2. ______ of the earth surface is covered by water. A. 20% B. 30% C. 50% D. 70%

5. 3. How many planets are there in the Solar System? A. 6 B. 7 C. 8 D. 9 4. What is the total population of humans on the earth? A. About 3.5 billion B. About 4.5 billion C. About 5.5 billion D. About 6.5 billion

6. 5. How long does the rotation (自转) of the earth take? A. 12 hours B. 24 hours C. a month D. 365 days 6. Which continent is the smallest? A. Africa B. North America C. South America D. Oceania 7. On what day is the Earth day celebrated? A. April 22 B. May 4 C. August 21 D. November 11

7. 8. Which ocean is the largest? A. The Pacific Ocean B. The Arctic Ocean C. The Indian Ocean D. The Atlantic Ocean 9. Which country has the largest area? A. Canada B. China C. Russia D. U.S.A

8. Prediction Look at the picture. Do you know the topic of this unit?

9. 海洋里的细胞开始分裂

10. 登陆

11. 爬行动物

12. 恐龙

14. Mammals

16. 人类的兴起

18. Do you know what it was like before life appeared on earth?

19. 可以演化成低级生命的小液滴水泡状的太空原始生命体可以演化成低级生命的小液滴水泡状的太空原始生命体

20. It was full of water.

21. Pangu separates the sky from the earth.

22. 中国神话传说中有盘古开天地的说法。巨人盘古用一把利斧劈开混沌, 将天地分开。死后, 他的气息化成风和云, 声音变成轰轰的雷声, 左眼化为太阳, 右眼化为月亮, 手足与四肢变成大地的四极与五方的名山, 血液化成江河,筋脉铺成道路, 肌肉形成田地, 须发成为星星, 牙齿和骨骼化为金属、珍珠、玉石, 汗水成为滋润万物生长的甘霖和雨露。

23. Nvwa made humans.

24. Other legends about the beginning of universe.

25. India Brahma is the god first represented in the Hindu Triad. He is the creator of the universe and all living beings are said to have evolved from him.

26. ▲Big Bang New stars Gas Dying stars remnants

27. 平面图

30. 太阳系

31. 地球大气

33. Scanning and matching

34. 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 animals on the earth.

35. Careful reading

36. Fill in the blanks in the following form. Atoms

37. violent atmosphere presence acids

38. oxygen shellfish amphibians

39. Reptiles existed gave birth to

40. clever dioxide

41. 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. F F T T

42. Summary How life began on the earth “Big Bang” stars ________ other bodies atoms Earth: a cloud of _____ dust

43. globe a solid _____ other 4. _____ carbon nitrogen water vapour gases the earth’s _____________ atmosphere fundamental Water: ____________ to the development of life plants extremely small _______ on the surface of the water

44. shellfish early _________ and all sorts of fish green plants on land amphibians land animals insects human beings reptiles ___________ huge animals (dinosaurs) the rise of __________ mammals

45. Post-reading

46. We have only one earth!!!

47. You can use the following words or phrases to help you: prevent… from… harmful global warming carbon dioxide in turn depend on as a result thus atmosphere

48. Let’s take part in the activities to save the earth!

49. Discussion How life began on earth is one of the biggest puzzles that scientists found hard to solve. What other puzzles are hidden in the passage? Find them out and do some research.