人教版必修三unitreading.pptVIP

Unit 4 Astronomy: the science of the stars 人教版英语 必修三 unit4 编者：内蒙古巴彦淖尔市奋斗中学 英语组 贾魏巍 大家好 * 天文学 天文学家 太阳系 原子 猛烈的；激烈的 二氧化碳 大气层 连锁反应 氧气 水生有壳动物 两栖动物 恐龙 哺乳动物 Astronomy Astronomer Solar system Atom Violent Carbon dioxide Chain reaction Amphibian Oxygen mammal Dinosaur Shellfish Atmosphere new words 大家好 * The Solar system eight planets many comets other objects Warming Up 大家好 * There used to be nine planets in the solar system. Recently scientists have decided that one of them can no longer be considered a planet. Do you know the name of that planet? Do you know why they removed it? Pluto. Scientists now think it is too small to be called a planet. 大家好 * 大家好 * sun Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto 水星 金星 火星 木星 土星 天王星 海王星 冥王星 The Solar system 大家好 * Each religion and culture has its own ideas about how life began on earth. What do you know? Pre-reading 大家好 * In china, Pangu separated the sky from the earth The Goddess Nvwa mended the heaven and created human beings. In china ： 大家好 * In other countries： The Holy Bible says that the God created the world and the human beings In India： Brahma(梵天) is the creator(创造者) of the universe and all living beings（生物） 大家好 * ▲ Big Bang 大家好 * Water Air sun Water is the headspring(源泉)of life. ? What is the most important thing for all types of life on the earth? 大家好 * How Life Began on the Earth 大家好 * 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. skimming listen to the tape and match the main idea of each paragraph 大家好