Mal- prefix is one of the greatest things in Esperanto. Makes vocabulary at least 2 times smaller.
It is certainly very useful, though I think 2 times smaller might be pushing it. After all, there are many words you cannot sensibly attach mal- to. For example, what would a malbovo be?
I was talking to my friend in English the other day and I couldn't remember the word for anticow. It's a pretty valuable one to remember.
Ah, yes! The anticows from the antiuniverse made of antimatter. How could I not remember?
Theoretically, if one had enough antimatter, they could make an entire anticow that produces antimilk.
Who else did the obligatory out-loud sing-along wherein you struggle to fit in the extra syllables?
OK -- I thought I would get past the question, having memorized that "Cxu vi malpravas" in another exercise had to be rendered as "Cxu li malpravas" in order to be accepted as the answer. To my humble ears, this is still "Cxu vi malpravas", but this time must be rendered as "Cxu mi malpravas" in order to get past the question. So it's going to be even odds whether I can get past this level, guessing which answer I'm supposed to supply, when in each case I hear the same thing, "Cxu vi malpravas." Sigh.