人教版必修三Unit4Astronomy-Warmingupreading[课件].ppt

Module III Unit 4;What’s the meaning of the word “Astronomy”?;Pluto;4. Do you know the correct order of their distance to the sun?;;Mercury ;II. Pre-reading;盘古开天辟地 女娲补天造人 ;III. Fast-reading;5. Which question are you interested in in this text?;7. Conclude the main idea of each paragraph. 1) A widely ______ about the _____ of the universe. 2) The formation of the ______. 3) The __________ of water for life. 4) The development of ______ and _______ on the earth. 5) The arrival of _______ and their _____ on the earth. The text mainly tells us the _________ of the earth and the ___________ of life on it. ; Detailed reading This text can mainly divided into two stages ;Stage 1: The development of the earth;exploded with fire and rock;(3) What did the water vapour and gases form?; Water appeared; Why is water so important for the beginning of life? Because water allowed the earth to dissolve harmful gases into oceans and seas.;Stage2 The development of life; small plants appears in water;Shellfish and all sorts of fish; green plants began to grow on land;amphibians on land and in the water; reptiles appeared;mammals on land; small clever animals; 1.Who are the small clever animals with hands and feet? 2. Are they taking care of the earth well? Why? ; Because they are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space.;Can you fill in the blanks?;1. Insects and amphibians appeared. 3. The earth became a solid ball. 5. Reptiles appeared. 7. The earth was a cloud of dust 9. Shellfish and other fish appeared. 11. Clever animals with hands and feet appeared;How life began on earth is one of the biggest puzzles that scientists found hard to solve. What other puzzles are hidden in the passage?;summary; ____________ in water are considered to be the earliest lives on the earth. The O2they supplied en