english grammar is also very different from most asian languages. besides that, it has a lot of exceptions and irregularities in grammar. again, for example, you say 'a car, two cars'; yet ' a foot, two feet'.
interestingly, its is the most learned second language in this world. it is also considered as an international language, either in politics, internet, technologies, computers or arts. english has penetrated into almost all languages, either korean, chinese, hindi, japanese, french or arabic.
since we can't escape the reality that english is everywhere, so it is essential for us to learn english. and, one interesting trivia for you guys, english is the largest language in this world without a regulated body to reagulate it. interestingly, english has no big regional differences. how it could be not regulated yet stays regular could be considered a language miracle.