Over the last few centuries，there have been changes in our life.
Firstly，people were not able to travel such a long distance in such a short time in the past. Planes were not very popular at that time because traveling in planes used to be a very expensive way. Nowadays，we have fast，comfortable cars，and more and more people can travel by plane.
Secondly，in the past，people had to work much harder because they did not have the tools that we have today. Today，most of the difficult and dangerous work is done by computers and machines.
Thirdly，in the past，the living conditions were not as good as they are now. There were not bathrooms or running water in many houses，and many people could not buy things like refrigerators. TV sets or washing machines. Now，most families have all of these things.
Finally，nowadays，more and more people have the chance to get a good education. In the past，there were fewer schools and the quality of education was much poorer. Also，it is much easier to find the educational materials that you need on the Internet now.
The scientific and technological development in the world is amazing. Life now is much faster and busier than it used to be. And we are still creating new things to make our life better and easier.
