高中英语_unit_4Astronomy_the_science_of_the_stars公开课课件_新人教版必修3ashx.ppt

人教版高一英语必修3 Unit 4 Astronomy: the science of the stars Do you know how our life began on the earth? Pangu separates the sky from the earth Nvwa makes human beings Skim the passage and match the main idea with each paragraph. Para. 1 A.The formation(形成) of the earth. Para. 2 B.The importance of water for life. Para. 3 C.A widely accepted theory –the Big Bang Para. 4 D. The arrival of humans and their impact(影响) on the earth. Para. 5 E.The development of plants and animals on the earth. 水Water is fundamentalto the development of life. Green plants grew into forests Later The Big Bang After the “Big Bang”, the earth was just a cloud of dust. It __________ loudly with fire and rock, which were _________to produce the water vapour, ___________ and other gases. Then small plants grew. They ___________and filled the oceans and seas with oxygen. Many millions of years later， the first green plants began to ________on land. When the plants grew into forests, reptiles appeared for the first time. They produced young generally by _________eggs. When dinosaurs disappeared, mammals became more i_________. Now small clever animals with_____________ appeared and ___________ all over the world. As time went by, they covered the earth and they are putting too much carbon dioxide into the__________, which ________heat_________ the earth into space. Whether life will continue on earth for millions of years to come will ________whether this problem can be solved. amphibians on land and in the water reptiles on land dinosaurs on land (1) What life developed after forests appeared? After that mammals on land (2) What life developed after dinosaurs? small clever animals (3) What life developed after mammals? Finally water Small plants insects and amphibians land on Reptiles on land mammals advanced mammals dinosaurs 1. Small plants in water 2