高中英语module 4 sandstorm in asia课件外研版必修三.ppt

We should plant more trees and grow more grass. Control air and water pollution. Build green fences along the desert. Forecast sandstorm’s real time to prevent disaster. Establish sandstorm data bank and collect information about sandstorms. All countries should join hands to make a plan in sandstorms control and prevention. Bye bye! * English doesn’t just belong to the English, it also belongs to you . Please remember the following suggestion: Today’s free talk ? Open discussion: Have you ever been in a sandstorm? If yes, please describe it to us. Can you find out which one of the following pictures refers to a sandstorm? If you want to know more ---, get close to it! Module 4 Sandstorms in Asia New words Match the words with the following definitions: forecast cycle( v ) dust expert process survive 1.some who knows a lot about a particular subject ________ 2.things that happen one after another, and have a result ________ 3.very small bits of dirt or earth, on the ground or in the air _________ 4.to say what will probably happen __________ 5.to continue to live after a difficult or dangerous situation or event ___________ 6.to ride a bicycle ___________ expert process dust forecast survive cycle 1.What is sandstorm? 3.what’s the weather experts’ advice when a sandstorm comes? Sandstorms are strong, dry winds that carry sands. They advise us not to go out. If we have to ,we’d better wear a mask. 2.Where in the world are the main four sandstorms places? ⑴Central Asia, North America, Central Africa and Australia.⑵Northwest China A B C D North America Central Africa Australia Central Asia Match the main ideas with each part Part I (para 1) : Part II (para2-5) : Part Ⅲ(para6): major disaster in Asia ----sandstorm measures description ； cause ； influence ； suggestion 1. Scientists have tried many ways to deal with sandstorms. 2. Land becomes desert only because people cut down tr