 They get rid of grammatically nonstandard features such as double negatives, the word ain't and past tense forms such as writ for wrote and come for came.They also adapt their accent, for example pronouncing the  instead of dropping it, replacing the glottal stops with [t] as in water, and changing some vowels.Some claim that Estuary English is becoming the new standard, replacing Received Pronunciation, and that Received Pronunciation speakers are adopting it themselves (Kerswill, 2001; Milroy, 2002).