人教版高中英语课件：Unit 4-Astronomy reading（原创） .ppt

astronomy astronomy the science of the the science of the starsstars presented by presented by zhongzhong qiuqiongqiuqiong the sun - starthe sun - star the earth - planetthe earth - planet the moon - satellitethe moon - satellite the solar systemthe solar system can you name others?can you name others? mercurymercury venusvenus marsmars jupiterjupiter saturnsaturn uranusuranusneptune neptune the milky way the milky way the universethe universe astronomyastronomy is the scientific study of is the scientific study of the universe and the heaven bodiesthe universe and the heaven bodies (such as the sun, the moon, and stars), (such as the sun, the moon, and stars), gas, and dust within it.gas, and dust within it. how lifehow life began on the earth?began on the earth? chinese mythology pangu separated the sky from the earth. chinese mythology nuwa made human beings bible god created the world scientific theory “big bang” 1st reading1st reading tape task 1: fill in the blanks task 2: tell the main idea of each para. “big bang” happened _ began to form and combine after several billion years the earth: a cloud of _ 4.5 3.8 billion years ago the earth: a _ globe; _ appeared many millions of years later _ started to develop about 2.6 million years ago _ appeared task 1: fill in the blankstask 1: fill in the blanks atoms dust solidwater life human beings task 2: tell the main idea of task 2: tell the main idea of each parteach part para 1 para 2 para 3 para 4 para 5 a. the importance of water for life b. the formation of the earth c. the arrival of human and their impact on the earth d. a widely accepted theory about the formation of the universe e. the development of plants and animals on the earth 2nd reading2nd reading task 1 : the formation of the earths atmosphere task 2: the development of life reason: the earth _ loudly with fire and rock. ingredients: _, nitrogen, water _ and other _. results: the earth _ down and water began to appear on its _. task 1: the formation of task 1: the formation of the earths atmospherethe earths atmosphere exploded carbon vapour gases cooled surface 2 1 small plants in water 3 green plants on land 4 5 6 forests 7 8 9 2 shellfish and all sorts of fish 4 insects (on land) 5 amphibians (on land and in water) 7 reptiles (on land) 8 dinosaurs (on land) 9 mammals (on land) task 2: the process of evolutiontask 2: the process of evolution revisionrevision _made it possible for life to begin to develop. water plants encouraged the development of _. early shellfish and all sorts of fish later _ appeared. land animals insects amphibians when plants grew into forests, _ appeared for the first time. reptiles some huge animals, called _, developed.dinosaurs when dinosaurs disappeared, _ became more important. mammals small clever animals with hands and feet human beings too much carbon dioxide too hot to live what will human do? discussiondiscussion useful words: environment; pollution