Breakdown of Mačka je skočila i sjela na radijator.
biti
to be (sam, si, je)
i
and (additive)
mačka
cat
na
on, at / to, onto (with motion) / about (thinking about)
Questions & Answers about Mačka je skočila i sjela na radijator.
Why does this sentence use sjela na radijator (Accusative) instead of the Locative case na radijatoru?
The verb sjesti (to sit down) is a dynamic verb of motion, describing the cat's movement onto a surface. With destination or movement towards a goal, the preposition na takes the Accusative case. If the cat were already resting there without moving, we would use the stative verb sjediti (to be sitting) and the Locative case: Mačka je sjedila na radijatoru.
Where is the helping verb je for the second verb, sjela?
It is shared! When you have a compound sentence with two past tense verbs that share the same subject, you only need to use the auxiliary verb je once. It applies to both skočila and sjela.
Could I use sjedila instead of sjela here?
No, because sjela is the perfective verb meaning the completed action of sitting down. Sjedila is the imperfective verb meaning the ongoing state of sitting. Since the cat performed a sequence of completed actions (jumped, then sat down), we must use the perfective sjela.
Why doesn't the word radijator change its ending in the Accusative case here?