LingoflyThe past: radio sam, not a bare radio
English "I worked" is one word. Serbian needs two: an -o / -la form plus a helper from "to be". Radio sam, radila sam, radili smo. Without the helper the phrase sounds cut off. For example: “Јуче (juče) сам (sam) био (Bio) код (kod) лекара” (lekara) — Yesterday I was at the doctor's. A rule from the Serbian course: worked out on examples, not memorized as a wording.
How it works
English "I worked" is one word. Serbian needs two: an -o / -la form plus a helper from "to be". Radio sam, radila sam, radili smo. Without the helper the phrase sounds cut off.
The masculine form ends in -o: radio, išao, izgubio. The feminine puts the l back: radila, išla. So the past always tells who is speaking.
The helper is a short unstressed word and takes second place. Juče sam radio, and never "Sam juče radio".
Two things turn up at once. Beside se the helper je drops out: pokvarilo se, not "pokvarilo se je". And the negative is one fused word: nisam radio, nije došao.
Table
| who | the helper | example |
|---|---|---|
| ja (m) | sam | radio sam — I worked (a man speaking) |
| ja (f) | sam | radila sam — I worked (a woman speaking) |
| ti | si | radio si — you worked |
| on / ona | je | radio je / radila je — he / she worked |
| mi | smo | radili smo — we worked |
| vi | ste | radili ste — you (pl.) worked |
| oni | su | radili su — they worked |
| negation | nisam, nisi, nije… | nisam radio — I did not work |
By example
How the rule settles in your head
A rule is not memorized from an explanation. It is memorized from an attempt to use it and a mistake — that is why the app delivers it mixed in with words, not as a separate lesson: it resurfaces exactly where you forgot it.
Frequently asked
The past: how does it work in Serbian?
English "I worked" is one word. Serbian needs two: an -o / -la form plus a helper from "to be". Radio sam, radila sam, radili smo. Without the helper the phrase sounds cut off.
What does it look like in a Serbian example sentence?
“Јуче (juče) сам (sam) био (Bio) код (kod) лекара” (lekara) (Juče sam bio kod lekara) — Yesterday I was at the doctor's. A rule is easier to test on sentences like this than to memorize as a wording: what surfaces in conversation is the sentence.