Translation:If I were at a party, I would eat cheesecake.
"Taswn" is the "unlikely if", isn't it? What's unlikely about being at a party?
Could I say "If I were at a party I would eat cheesecake" or does "mewn parti" mean "in a group of people" rather than being at an event?
can you also say "...baswn i'n bwyta...." It keeps correcting me but I don't know what I am doing wrong
The following are the two correct answers using '...baswn i'n....' If you wrote either of them then there should not have been any correction.
Taswn i mewn parti, baswn i'n bwyta cacen gaws.
Taswn i mewn parti, baswn i'n bwyta teisen gaws.