Could ''over the'' be a translation, e.g. over the weekend, vs on the weekend
I don't think you can use "ar y" like that. "dros y penwythnos" would be "over the weekend".
So, could I say for example " ar y cath mae oren" ? Would this be grammatically correct?
Ar y gath mae oren - yep! https://s-media-cache-ak0.pinimg.com/564x/09/fe/0c/09fe0c057959fc0fe3831bd8b828dcc9.jpg