Difference between "di" and "su"
Both of these prepositions mean "about".
So when do you use which?
"Su" is about in a physical sense, exempli gratia, "he was walking about the area", I suppose. "Di" is more of an....abstract sense, and can often be replaced with "of", or "concerning", exempli gratia, "He was thinking about his girlfriend." :3
There's a question in one of the exercises and it goes something like "Loro scrivono su di lei" Mind explaining why both words're used? Thanks in advance :)
I think its like "che cosa", where a couple of different words could be used and are correct, as well using them all is correct. Not totally sure though