内蒙古乌拉特中旗一中高一英语导学案：UNIT 4 ASTRONOMY THE SCIENCE OF THE STARS PERIOD 2（新人教版必修3）.doc

1、【学习目标】1. 找出文章中的相关短语2. 找出文章中重难点句子，并将其翻译3. 以小组为代表展示自己的学习成果。【课前预习】和你的同桌讨论以下短语的意思1. circle around_2. according to_ 3. a widely accepted theory. in time_ 5. cool down _6. be fundamental to_ 7. a chain action_8. make it possible forto do_ 9. give birth to_10. . prevent from _【课内探究】Step 1: 学课文查短语1.太阳系_ 2.及

2、时，终于_ 3.下蛋_ 4.产生 _5.轮到某人接着_ 6.冷却_ 7.一团尘埃 _ 8.与。不同_ 9.生命的开始_ 10.允许某人干某事_ 11.在什么的表面_ 12.考虑_ 13.。的一部分_14.绕。运转_ 15。对。感兴趣_ 16. 将。配对_ 17.注意_ 18.赞同，同意 _19.正相反，与此相反 _ 20.阻止，制止_ 21.朝四面八方_ 22.从。中逃脱 _ 23.依靠，取决于_ 24. 由于_ 25.连锁反应 _ 26.对。 有害_ 27.环绕围绕_ 28.灭绝_ 29.挡住光线 _ 30。解释 _ 31.熟悉，掌握，理解_32.首次，第一次_ 33.水蒸气_ 34.在。和

3、。之间_ 35显然 _ 36.是。的基础_ 37.成百万的_ 38.在陆地上_ 39.恐龙时代_ 40.在过去_ Step 2: Read each paragraph carefully, then find out the difficult sentences and translate them.(找出并翻译)1. According to a widely accepted theory, the universe began with a “ Big Bang” that threw matter in all direction._2. What is was to become

4、 was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe._3. The earth became so violent that it was not clear whether the shape would last or not._4. What is even more important is that as the earth could down._5. What many scientists believe is that the c

5、ontinued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas._6. This produced a chain reaction, which made it possible for life to develop._7. Why they suddenly disappeared still remains a mystery._8. They are putting too much carbon dioxide into the atm

6、osphere which prevents heat from escaping from the earth into space._9. So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved._10. Many scientists believe the earth may become too hot to live on._【Homework】 运用文章中词汇，短语，翻译下列句子。1. 生命开始出现在地球上。_2. 地球上太热而不能生存。_3. 是否我们将依靠于大气。_4. 这些阻止热量升起。_5. 为什么他们不来依然是个谜。_6. 根据理论，她是正确的。_他把东西投到四面八方。_