So it should be either Fan hyn dw i or dw i yma? Or should it only be the first construction? Diolch!
I suppose this means we shouldn't use dw i'n yma for this phrase, correct?
Yes. 'n/yn is not used with adverbs such as yna, fan hyn, etc.
Can you say "dyma fi"?
Beth sy ‘n bod gyda here I am? Sut fasech chi ‘n dweud here I am mewn brawddeg pwysleisiol?
Nothing wrong with 'Here I am.' as a translation here.