prononciation of d in spanish
when do we prononce it dh like in olvidar and when we say it d like in medecine?
When the Spanish D falls within a word, ie: Ciudad, the middle D is pronounced softer than the English D, with the tongue just starting to touch the back of upper front teeth.
When the Spanish D falls at the end of a word, ie: Ciudad, the ending D is pronounced softer than the Spanish middle-letter D, and at the end of the D sound it has a slight TH sound with more contact between the tongue and teeth.
When the Spanish D starts a word, ie: Donde, the pronunciation is harder then the other D sounds, but still softer than the English D.
(This is Mexican Spanish. It could be slightly different in other countries).
I believe the rule is that when the placement of the d is between two vowels, it is pronounced with the th/dh sound. Otherwise it is pronounced as in English.