Electricity is one of the great inventions of the past because it has brought many benefits for people. First, electricity can be used to light our houses and streets. Without it, the world will be dark and dangerous. Second, electricity is also useful in heating. For example, in cold areas, electric heaters can keep us warm and healthy in long winters. Finally, the most important use of electricity is to run machines. Without electricity, factories, schools, and hospitals cannot run normally. Everyone and everything will stop working. Other inventions, such as TVs, computers, and robots will become useless without electricity. In conclusion, electricity plays a very important part in our life today, and we cannot live without it.