Bonvolu = bone (well) + volu (imperative of voli, to want, to wish).
Here are the translations for some words in the format : French word = English word = Esperanto word Bon = Good = Bone vouloir = to want = voli
I think that Bonvolu is close to the french language and probably other languages of the latin family.
When volu functions as a verb in a sentence, it's in the imperative mood, but the word bonvolu ( = please -- built from bone + volu ) is an interjection.
I was under the impression that 'please' was 'mi pitas'. Where would you use that versus 'bonvolu'?
I think "mi petas" also means please (literally "I am asking for/requesting"), but can also be used as a question "mi petas?" to make it more like "I beg your pardon?" when you want someone to repeat something.