Uncle = "dod", David = "duh-veed". Originally the accent is on the second syllable, but some people's names are pronounced "DAvid" as a sort of a nickname.
Duh-veed is the Ashkenazi/American way. It's usually Dah-veed. I agree with the accent part
For my answer I gave, "I have just one uncle." Duo marked it wrong. I am reporting it.
I think it implies you don't have other family members, rather than uncles.
Out of context, it could also technicaly be "I have only one boiler (dood)", although that would be unlikely in a chapter on family.
That's why the word דוד has nikkud - the dot above the letter 'ו indicates it should be read as "dod", uncle.