Breakdown of Mój brat rozlał wodę na podłogę.
brat
brother
woda
water
mój
my
na
on, at / to (motion toward) / for (a meal) / for (waiting for)
Questions & Answers about Mój brat rozlał wodę na podłogę.
How does the prefix roz- change the base verb in this sentence?
The base verb is lać, which means 'to pour'. The prefix roz- adds a sense of dispersal, spreading, or things going in different directions. So, rozlać literally means 'to pour so it spreads everywhere', which is how you say 'to spill' in Polish.
What is the imperfective form of rozlać, and why did we use the perfective here?
The imperfective form is rozlewać. We use the perfective rozlać (and its past tense form rozlał) because spilling the water was a single, completed action with a clear result. He didn't spend time repeatedly spilling it; it just happened and was done.
Why is it na podłogę instead of na podłodze?
The preposition na takes the accusative case (podłogę) when there is motion toward a destination. The water traveled onto the floor. If you just wanted to say the water is already sitting there, you would use the locative case: woda jest na podłodze (the water is on the floor).