Hi, could someone please explain why ‘ar’ is used in the following phrase for ‘on Saturday’:
“It goes slowly on Saturday doesn’t it?” is “Mae’n mynd yn araf ar ddydd Sadwrn on’d yw hi?” (10:55)
when in previous challenges and in the following phrase in Challenge 20, ‘ar’ isn’t used:
“What are you going to do on Saturday?” is “Be’ ti’n mynd i 'neud ddydd Sadwrn?” (16:38)