So true, but there's more.
They can’t make the “eh” sound to save their lives. Where you and I would pronounce “Ten men with ten pens“ correctly, with them it comes out “Tin min wif tin pin(s).”
Speaking of the missing final “s,” I asked one once, What singer was known as The Hardest Working Man in Show Business? The answer: “Jame Brown.”
If he'd asked the question it would’ve come out 'show bidness'.
Other negrisms: the dropped “h,” as in the exclamation, “Oh, sit!” Substituting d for th: “You got dat right.” The non-existent past tense “ed,” whether spoken OR written: “Freddy call you before.’”
Neighborhood becomes ‘hood because it's too hard speaking words with three syllables.
Besides, it sounds ‘white.’