1. Zhang Yi Wenzhou Middle School Reading I

3. Before life began After life began (Para 1,2,3) (Para 4,5) Para1: _____________________ Para2: _____________________ Para3: _____________________ Para4: _______________________ Para5: _______________________ the theory of the Big Bang the formation of the earth the importance of water the development of life the appearance of humans

4. Before life began After life began (Para 1,2,3) (Para 4,5) Para1: _____________________ Para2: _____________________ Para3: _____________________ Para4: _______________________ Para5: _______________________ the theory of the Big Bang the formation of the earth the importance of water the development of life

5. Para2: _____________________ the formation of the earth the earth’s atmosphere a cloud of dust the Big Banga solid globe water C,N,H 2 O vapour & other gases explosion Connect pictures with arrows

6. Para2: _____________________ the formation of the earth the earth’s atmosphere a cloud of dust the Big Banga solid globe water C,N,H 2 O vapour & other gases explosion

7. Para2: _____________________ the formation of the earth the earth’s atmosphere a cloud of dust the Big Banga solid globe water C,N, H 2 O vapour & other gases explosion be settle explode in time produce make cool down

8. the importance of water for life Para3: __________________________ Why did the author mention water had also appeared on Mars but disappeared later? A.Distinguish( 区分 ) the earth from other planets. B.Imply Mars had the possibility of life. C.Explain why life only exists on the earth. √ only Why was water to be fundamental to the development of life? produce a chain reaction,...... continued presence of water allow...... dissolve harmful gases and acids......

9. 1________________ 2____________________ 3________________ 4__________ 5__________ 6_________ 7__________ 8__________ 9__________ the development of life on the earth Para4: __________________________ small plants (on the surface of water) shellfish and all sorts of fish(in the water) green plants (on land) insects (on land) amphibians (on land & forests reptiles dinosaurs mammals plantsanimals in the water) Next… Later… Many millions of years later… After that

10. ______ → _______ 1________________ 2____________________ 3________________ 4__________ 5__________ 6_________ 7__________ 8__________ 9__________ the development of life on the earth Para4: __________________________ small plants (on the surface of water) shellfish and all sorts of fish(in the water) green plants (on land) insects (on land) amphibians (on land & forests reptiles dinosaurs mammals plantsanimals in the water) plants → water → simple → land animals complex

11. The appearance of humans Para5: ____________________ What is the author’s attitude towards humans’ impact? A.Optimistic B.Pessimistic C.Concerned D.Neutral ( 中立 ) What problem is caused by human beings? √ Global Warming/too much CO 2 /prevent…from/too…to

12. How life began on the earth earth water universe plants animals humans reptiles dinosaurs mammals Insects amphibians shellfish, fish forests green plants small plants in water (oxygen) Discussion (in a group of 4):

13. Homework ： Try to retell the development of life in your own words.