What's the difference between "olivas" and "olivae"?
They're both the plural form of "oliva"
-ae is the nominative ("Olives are in the market")
and -as is the accusative ("I want olives")
I think "velim" works fine at the beginning here
It works fine anywhere, with any word order. Please, use the report button. (edit: Now it's accepted).
Could I write 'Ego ... velim.'?
Yes, of course, you can. "Ego viginti olivas/Ego olivas viginti velim.
This is the emphatic version of the sentence.
why not velo instead of volo
I'd like to know this as well. Is it a one-off fluke? Or are there other 1st person forms we should know about?
I would like to learn when to use "olivae" and when to use "olivas"