Philadelphia African American English [PhAAE]. This use of ain't, which varies with didn't, is
a unique feature of AAE (Labov et al. 1968) and has implications for the expression of
tense/aspect in the language. First, it further levels tense/aspect cues from auxiliaries in
negative contexts. Second, whereas verbal complements of didn't are uninflected (1a),
complements of ain't may either be uninflected or in preterit form (1b). This asymmetry …