I have been teaching English for ten long years in India in Bihar. As I have to teach students error detection for various competitive exams in my country ,therefore, I have lots of knowledge about it. Being a teacher of English language I have a sound knowledge of grammar and its usage. I can do proof reading because of my sound knowledge of vocabulary. For one year I was an interpreter in NPSP office of WHO in my district and made so many visitors from foreign visit my state districts.