Rhoticity in English
(重定向自R dropping)
Rhoticity in English refers to the situations in which English speakers pronounce the historical rhotic consonant /r/, and is one of the most prominent distinctions by which varieties of English can be classified. In rhotic varieties of English, speakers pronounce /r/ in all instances, while in non-rhotic varieties, speakers no longer pronounce /r/ in postvocalic environments – that is, when it is immediately after a vowel and not followed by another vowel. For example, a rhotic English speaker pronounces the words hard and butter as and , whereas a non-rhotic speaker "drops" or "deletes" the /r/ sound, pronouncing them as and . A non-rhotic speaker would still pronounce the /r/ in the words run, tree and very, and usually in the continuously spoken phrase butter and jam (the linking R), since in these cases the /r/ is followed by a vowel.