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Help me understand Polish imperfective vs perfective verbs? [64]
To make it as simple as possible:
past, future, infinitive (to + verb):
- perfective means completing something one time: napisałem list, przeczytałem książkę - I wrote the letter, I read the book as in I completed reading it.
- imperfective means either being doing something, where the action is more important than the (attained or probably not attained) result, AND/OR when something is repeated: pisałem list, czytałem książke - I was writing a letter, I read a book (all day long)
present:
- you have only imperfective, as in the present you ARE doing something, you can't complete something exactly now.
imperative:
- as a very rough rule of thumb, positive imperatives are usually perfective, negative ones imperfective: zrób to! nie rób tego!
While one aspectual pair usually corresponds to one only verb in English, sometimes there are two different verbs in English, which might let you understand the difference better. For example zdawać egzamin means "to take an exam", while zdać egzamin "to pass an exam".
As for verb formation, it roughly goes like this:
- from a given imperfective (gotować) you get the perfective by adding a prefix (ugotować).
- you can also form other perfectives with other prefixes and with different meanings: przygotować
- the new perfective may in turn form imperfectives, often adding -yw-, -aw- or -ow-, as in przygotowywać
Though often imperfective/perfective pairs are formed otherwise. For example the imperfective might end in -ać and the perfective in -ić or -yć; other times in -ąć. Sometimes there are bigger changes, sometimes no relation at all (wziąć/brać, -kładać/-łożyć)