o vs. oppure
Please ignore the fact that I'm leaving out my accent marks, haha.
2 sentences: Bevo te o caffe. Mangi caramelle oppure biscotti?
In the second sentence is "oppure" used in place of "o" because the sentence (verb) is in the "tu" form?
If so, what conjunction would be used if it was in the lei/lui form?
Mangia caramelle _ biscotti?
It doesn't have anything to do with the verb form. In these two cases, "o" and "oppure" are interchangeable. "Oppure" can be slightly more emphatic (because it is longer, so it naturally draws more attention to the conjunction) and can mean "or rather." But basically they mean the same thing and are used in the same way. The only exception I can think of would be that only "o" can be the first part of the phrase "either...or" ("o...o/oppure"). I'm sure someone will find one that I've missed, but in general they're interchangeable.
Exactly, "oppure" just puts emphasis on the choice, like "or else", "or rather", "or again"... Instead of on the rest of the sentence.
See the difference : "Mangi caramelle o biscotti ?" - "You are eating. Either candies or biscuits." "Mangi caramelle oppure biscotti ?" "What are you eating ? Is it candies or rather biscuits ?"
Right. You could look at the difference between "o" and "oppure" in that sentence as something like the difference between, "Are you eating candy or cookies?" and, "Are you eating candy, or cookies instead?" Essentially they mean more or less the same thing, but the emphasis is slightly different.
Thank you! I couldn't understand the difference between the two, and your answer was very helpful!