In American English, I'd like to know how to pronounce "Got to" and "Got a", for instance, "I got to go now." and "I got a book.", are "got to" and "got a" have same pronunciation, like "godda"? If so, would it be applied in British English? Please advise.
If you were in a professional setting, you would probably want to take your time and carefully pronounce each word.
I've got to go
I've got a book.
I've godda go.
I've godda book.
They sound very similar in fast, spoken, American English. British English would probably be different. "I've got a book" would sound more like, "I've got* uh book" where British speakers have a "glottal stop" similar to the word "button" (but*in)