Relax! Be patient and enjoy yourself .Learning foreign languages should be fun . 放松点！要有耐心，并让自己快乐！学习英语应该其乐无穷！20130306 1Unit 4 Astronomy: the science of the stars高一年级英语组 王学杰 2014-03-06单元目标：1.知识目标：掌握本单元单元要点预览中的重点单词，短语和重要句型；掌握名词性从句中主语从句的用法。2.能力目标：通过学习了解宇宙科学，地球上生命的起源和发展历程，了解万有引力、黑洞和太空旅行等天文学知识。3.情感目标：培养学生对科学的兴趣和保护地球的意识，激发学生探究科学的热情。Task1. Skimming Reading strategy(策略): Go through the passage quickly to get the main idea of each paragraph. Dont worry about the details and new words. Skim the passage and 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 effects on the earth Para.5 The development of plants and animals on the earth Task2.Scanning : Choose the best answer1.Why was the earth different from other planets?A. It produced a lot of heat. B.The water remained.C. Water disappeared. D.It was the oldest planet.2.Why was life able to develop on the earth but not on other planets?A. The earth had a solid shape. B. The earth did not have harmful gases in its atmosphere.C. The water stayed on the earth but not on other planets. D.The earth was not too hot and not too cold.3.Why did the plants grow before animals came? A. Animals needed plants to protect them from the sun. B. Plants provided oxygen for animals to breathe.C. Animals could hide from hunters in forest.D. It was easier for plants to grow.4.What problem is caused by human beings?A. They exist everywhere on the earth. B. They cause global warming.C. They find new methods of growing crops. D.They enjoy hunting and fishing.Task3 .Detailed reading(细读 ) Reading strategy: Read the passage carefully paragraph by paragragh and try to get more Relax! Be patient and enjoy yourself .Learning foreign languages should be fun . 放松点！要有耐心，并让自己快乐！学习英语应该其乐无穷！20130306 2information. Then answer the questions. Para.1&2: The formation of the universe and the earth 1.About how the universe began, which theory is widely accepted? 2.What form（形状） was the earth after the “Big Bang”? 3.What made up the earths atmosphere after the earth exploded?4.In the sentence “It exploded loudly with fire and rock. They were in time to produce carbon, nitrogen”here “they” refers to_. “In time” means_. Para.3: The importance of water for life What made the earth different from the other planets is that _ remained on the earth. The significance of the continued presence of water is that it allowed_. Para.4 : The development of life 1.small plants in the water 2._ 3._ 4. Insects on land 5._ 6._ 7._ 8.dinosaurs 9_ Para.5 :The arrival of humans and their effects on the earth 1. What problems have been caused by humans to the earth? 2. What does the last sentence mean? Task4. Post-reading .From the text, we can infer（推断）except that_. A. The passage tells us the scientific idea of how life began on the earth. B. It is wrong to show films with dinosaurs and people together. C. Finally, humans rule the world, but they are not taking care of the earth very well. D. Life began on land and then in water. . Can you find their English in the text? 1. 随后他会变成什么一直无法确定直到约 45 亿至 38 亿年这团尘埃最终变成一个固体圆球。2. 地球变得如此激烈动荡, 以致于不知道这个形状是否会继续存在下去。3. 更重要的事，随着地球的冷却，地球的表面就开始出现了水。4. 很多科学家相信,水的继续存在使地球得以把有害气体和酸的物质溶解到海洋里。Relax! Be patient and enjoy yourself .Learning foreign languages should be fun . 放松点！要有耐心，并让自己快乐！学习英语应该其乐无穷！20130306 3Unit 4 Astronomy: the science of the stars高一年级英语组 王学杰 2014-03-06单元要点预览:词语辨析1. loudly / loud / aloud 2. unlike / dislike 3. remain / leave来源: 学*科*网来源:学_科_网4. climate / weather 5. now that / since / because / as 来源:学+科+ 网1. violent adj.强暴的，猛烈的violence n.暴力，强暴；猛烈violently adv. 强暴地；猛烈地2. fundamental adj.基本(础)的 n.pl.基本原则(法则) fundamentally adv. 基本地；根本地 fundament n. 基础；根本3. development n.生长，发展；新情况develop vt.发展；产生 vi.生长；发展developed adj. 发达的developing adj. 发展的4. lay vt.放下；摆设；产(蛋) lay-laid-laid-layinglie vi. 躺，平放；位于lie-lay-lain-lyinglie n.&vi. 谎话；说谎lie-lied-lied-lying5. prevent vt. 预防，防止 prevention n.预防；阻止；妨碍preventable adj.可防止的，可预防的6. gentle adj.和蔼的；轻柔的gently adv.温和地；静静地词汇部分来源:学科网词形变化7. physics n.物理，物理学 physicist n.物理学家 physical adj.身体的；物理(学) 的；物质的 Relax! Be patient and enjoy yourself .Learning foreign languages should be fun . 放松点！要有耐心，并让自己快乐！学习英语应该其乐无穷！20130306 4重点单词 1. system n.c 系统；体系；制度；方法 2. lay vt. (laid, laid, laying) 把放下；摆设；铺( 地毯) ；产( 蛋)3. harmful adj. 有害的；伤害的 4. exist vi. 存在；生存 5. puzzle v.(使)迷惑；(使)苦思 n.谜；难题6. pull v.拉，拖，拔；移动 n.拉，拖；拉(引) 力7. cheer vt.&vi. (使)高兴、振奋； (对)欢呼 重点词组1. to begin with 以开始；由作为开头；首先2. in time 及时；最终；迟早3. in one s turn 轮到某人；接着4. prevent.from 使不做事；阻止做某事5. block out 挡住（光线）6. be off