公开课unit4 usinglanguage - 副本.ppt

必修三 Unit 4 Astronomy: the science of the stars Using Language (P.30) Step 1. warming up(?5 minutes?) ▲Check the homework of preview. 1. the force of gravity _________ 2. spaceship ____________ 3. get the hang of __________ 4. now that_____________ 5. float _________ ６ spaceship cabin ____________ 7. weightlessly _____________ 8. exhausting ______________ 9. escape the pull of the earth’s gravity_______________ 10. lessen the weight_______________ 重力 n.宇宙飞船 熟悉，掌握 既然，由于 v.漂浮 太空舱 失重地 adj.筋疲力尽的 逃离地球的引力 减少重量 Step 2. Reading Practice (自学课文) Task：（?15分钟?） 阅读using Language 的课文， 完成学案中Q1--Q4 The force of gravity would change four times on their journey . ( ) 2. When they were on the moon, they would not feel the gravity because there was no gravity on the moon. ( ) 3. Since the gravity has changed, their walk didn’t need a lot of practice. ( ) 4. Their returning to the earth was frightening. ( ) Ｑ４: True or False Questions F F F T three would was did ( Para3, L8 ) ( Para2, L9 ) ( Para2, Line1 ) ( Para4, L2 ) 3. When did the author feel strongest of the gravity of the earth? A. On the moon. B. On the half way to the moon. C. At the very beginning D. On their leaving from the moon C 4. What causes the writer to feel that he becomes weightless on the moon? A. Spaceship B. Gravity C. His friend D. His Good feelings of the moon B 5. From the text we can know if a man grows up on the moon, ___. A. he will grow taller than on the earth B. he will grow shorter than on the earth C. he will become fatter D. he will become weightless A Step 4: Discussion Writing： （?8分钟?） Q: Do you think space exploration is worthwhile ? 就“太空探索(space exploration)是否值得”这一话题展开讨论，各组先快速讨论选择（1分钟之内）“支持”还是“反对”，再根据提供的信息和讨论结果, 共同用英语（5分钟）写一篇小短文 ，最