Many people say it is useless to learn English,Because English is not often used in life,they believe that English is only a language tool.Is this really the case?No, I don't think so.Next, I will explain the necessity of learning English:First,English is a channel and way,it can bring us into the larger world.Ludwig Wittgenstein said,the limits of my language are the limits of my world.In other words, English is our key to opening the door to the world.Secondly,English is a social means,help us to associate with different new friends,enrich our life.Last,the most important thing for us is that it can bring us potential opportunities.In the rapid development of today's society,you can't do much with only one language.For a better life, we should learn a foreign language.