As we all konw, trees h**e many uses.With the rapid growth of economy,the trees has become increasingly important in our daily life.While on the one hand,trees not only can clean the atmosphere and offer building,desk,table,papers wood,but also making oxygen.On the other hand,trees can prevent soil be washed away by he**y rains.In hot summer it give us shade and make our enviroment more beautiful.So we must plant more trees and protect forests and prevent people cut down the trees.