Why in a sentence "Jsme poslední muži" ("we are the last men") we have to use "THE" before "last men" but in a sentence "Jsme velcí muži"("we are big men") we do not have to use "THE".
Because 'Last" in English always has to have THE to make it unique. To point out it is THE last. With Big we would need to use the article if we wanted to say They are THE BIGGEST men.
The last is in reality a superlative.
Thank you for the explanation.
How about k changing into c???? Are there any special rules?
in front of the soft i, all hard consonants change there. See the Tips and rules.
K -> C
H -> Ž
Ch -> Š
Why I listen "Jsme velcí muže" and even they give me it as correct (no typos neither)?
Hard to say, it would be good to have a screenshot.
Could it also be "My jsme velcí muži?"
sure, try it in the reverse exercise
Why "fat" is not accepted? Cause "big" sounds strange and i wonder if velký means big like a big mountain for example or fat like fat people (obese)
Big and fat are two different words with two different meanings. A big person does not have to be fat or obese.
Ah ok I think I misunderstood because in french (my mothertongue) both means the same.