there are about 3000 languages in the world. among all of these languages, english is the most widely used one .even though english is not the first or the second language in many counteies, it is also learned as a foreign language.
if we are good at english, we can communicate with other people from all over the world easily.and we can't learn the new technologies from those english-speaking countries without the help of english.
in a word, it's very important for us to learn english well.