"I want to go to the park on Sunday."

Translation: Dw i eisiau mynd i'r parc ddydd Sul.

[deeann333]

What is the mutation on "dydd" for in "Dw i eisiau mynd i'r parc ddydd Sul"?

[ChristinaMarieW]

If you are going on a certain day, like "on Sunday", then there is a soft mutation from d = dd.

Dw i eisiau mynd i'r parc dydd Sul. = I want to go to the park Sunday.
Dw i eisiau mynd i'r parc ddydd Sul. = I want to go the park on Sunday.

Handy mutation guide if you're interested: http://www.bbc.co.uk/wales/learnwelsh/pdf/welshgrammar_mutations.pdf

[deeann333]

Diolch yn fawr! I guess in my dialect of English, I don't really get a difference in meaning between "Sunday" and "on Sunday", but I still think I get the distinction you're making.

[Pips75]

Mutations haven't even been introduced yet!