When I say 'is' I mean 'that is the version that will be widely understood by most British Eng Speakers, that is pronounced that way by a significant number of them in formal contexts, and that is expected in all ELT exams'. 'Standard British English' is a theoretical construct, to which most speech approximates - especially in formal contexts - and from which some speech differs wildly. Melvyn Bragg, presenter of The Adventures of English - credited as the author, but [a heɪ ma dyts] as they say in Scotland - reports that when he was at school in Yorkshire he would say to his friends [az 'gaŋən jam] when to a teacher he would say 'I'm going home'.)
2 The /t/ is often dropped in less careful speech, more commonly - I think - in Am Eng.
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