As is known to all,electricity plays an important role in our life today.Electricity brings a lot of convenience to our life.It motivates the washing machine ,which helps us a lot with our housework.It makes the computer working,which aids us to obtain a lot of information from the internet.What's more ,without electricity,there can't be so many lights at night.We cannot do our homework in the light of a lamp.The city cannot be so beautiful without the decorations of the lights.Thus,it is obvious that electricity is so important in our life that we can hardly live regularly without it.