The first essential affirmative point is communication. There are more than 200 countries in the world. If everyone could speak English, they may have the ability to communicate with others whenever they are in strange countries. Furthermore, using English, people can have more friends, widen peer relationships with foreigners and can not get lost. Overall, English becomes a global language; people may have more chances in communication.Another crucial advantage is improving business. If English was spoken widespread and everyone could use it, they would likely have more opportunities in business. Foreign investments from rich countries might be supported to the poorer countries. For instance, a company and its proponents would be able to discuss, understand each other and develop the projects together.
The first disadvantage of issue is losing mother language. If English used as a global language, people may use it both at work and daily life. Children and teenagers might prefer to watch English cartoons or movies. Gradually, they make mistake when they use their mother languages. It can not be imagine if English is only one language in the world. Another serious negative point is taking much time and money. Old generation might need to study English to communicate with the youth ages. In addition, educational curriculum system could be changed to be suitable for the reform. These processes need quite long time and a large amount of money.
In conclusion, using English as a global language has both advantages and disadvantages. It is useful for communicating and business while could lead to be lost mother tongue and take much time and money.