More people speak English than any other language, but according to English languages expert David Crystal, non-native speakers now outnumber native speakers by three to one."There's never before been a language that's been spoken more as a second language than first,"he says. By the end of last year, the number of adult English speakers in Asia had reached 350 million. And according to the British Council, in ten years time 2 billion people will study English and about half the world's population will speak it.