In the past,the environment of my hometown was beautiful . you can seen the green tree around the town. The fish were swimming in the clear river.And people's life in here was simple,they worked hard ,even though they was not rich. With times goes by,everything changes quickly. now there are many high bulidings and shops.Both big and small cars run on the wild road . In the same time,the environment are polluted .The numbers of trees are decreasing.It's hard to see the fish in the river. The most important thing is decreasing the pollution.