The main reason for the widespread demand for English is its present day importance as an international language. Besides serving the infinite needs of its native speakers, English is a language which is used in science, technology, media, communication, international conferences, and so on. There are more than 350 million people speak English as their native language. Another 350 million speak it as a second language. Besides, it is quite difficult to get the information of how many people speak it as a foreign language. English is increasingly becoming popular. Most of the scientific inventions were carried out in the English-speaking countries. Computer programmes are designed in English. Most of books for research and reference are English-written. English is used in international negotiations, trade, and conferences. English is taught in most of high schools and universities. People should learn English which is considered as the useful tool in many fields.