"I'm studying astronomy in college."
Translation:Dw i'n astudio seryddiaeth yn y coleg.
why do you need to use the 'y' here - the english sentance says college,not The college.
As explained somewhere in the course notes, Welsh uses y with places that we typically attend one of on a regular basis. English does not do this. For example:
- Dw i'n mynd i'r gwely, i'r gwaith, i'r capel... - I'm going to bed, to work, to chapel...
Edit - the notes are in 'Simple Future'.