Ako, kad bi, da sam znao: three conditions, three different tenses

This unit is all about "if", and here Serbian is stricter than English. English covers dream and regret alike with "if"; Serbian splits them with different conjunctions, and the choice is obligatory. For example: “Ако сутра буде лепо време, идемо на реку” — If the weather is nice tomorrow, we are going to the river. A rule from the Serbian course: worked out on examples, not memorized as a wording.

Updated September 1, 2026 · Lingofly

How it works

This unit is all about "if", and here Serbian is stricter than English. English covers dream and regret alike with "if"; Serbian splits them with different conjunctions, and the choice is obligatory.

The first condition, real: ako plus the present. Ako imaš vremena, dođi. Ako sutra bude lepo, idemo na reku. The clause keeps the present even about the future — the same move as English "If you ARE free tomorrow", only stricter.

The second, possible: kad(a) plus bih, bi, bismo, with bih in the main clause too. Kad bih imao vremena, došao bih. This is the "if only" about which you may still dream: the condition has not come true, but it is not closed either.

The third, unfulfilled: da plus the past, with bih and the participle in the main clause. Da sam znao, ne bih došao. Da nisi zakasnio, stigli bismo. da — not ako: with ako the sentence sounds like a learner's render. English builds the same wall with "if I had known"; Serbian builds it by switching the conjunction.

Hence the rule worth memorizing whole: ako is about what may still happen; da is about what is already lost. The wrong choice does not block understanding — but it outs a foreigner faster than any accent.

The neighbors in the unit. Pod uslovom da — on condition that; osim ako — unless; čak i ako — even if (a concession, not a condition: the result does not change); u suprotnom — otherwise. And carefully: Serbian inače means "actually, by the way", while "otherwise" is u suprotnom.

Purpose and substitution: da bi — in order to, umesto da — instead of, kao da — as if. All three demand a verb: umesto da radiš. Before a noun the link changes: umesto toga — instead of that.

Time nearby: dok — while, dok ne — until, čim — as soon as, pre nego što — before. The last one takes three words where English takes one, and it cannot be shortened.

Table

Ako, kad bi, da sam znao: three conditions, three different tenses
the typethe link and tenseexamplein English
realako + presentako imaš vremena, dođiif you have time, come
possiblekad + bihkad bih imao, kupio bihif I had one, I would buy it
unfulfilledda + pastda sam znao, ne bih došaohad I known, I would not have come
a conditionpod uslovom dapod uslovom da platišon condition that you pay
a concessiončak i akočak i ako pada kišaeven if it is raining
otherwiseu suprotnompožuri, u suprotnom kasnimohurry, or we will be late
purposeda bida bih stigao na vozso as to catch the train
timepre nego štopre nego što krenešbefore you set off

By example

  • Ако сутра буде лепо време, идемо на реку
    Ako sutra bude lepo vreme, idemo na reku
    If the weather is nice tomorrow, we are going to the river
  • Кад бих знао одговор, рекао бих ти одмах
    Kad bih znao odgovor, rekao bih ti odmah
    If I knew the answer, I would tell you right away
  • Да смо кренули на време, не бисмо закаснили
    Da smo krenuli na vreme, ne bismo zakasnili
    Had we left on time, we would not have been late

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

Ako, kad bi, da sam znao: how does it work in Serbian?

This unit is all about "if", and here Serbian is stricter than English. English covers dream and regret alike with "if"; Serbian splits them with different conjunctions, and the choice is obligatory.

What does it look like in an example sentence Serbian?

“Ако сутра буде лепо време, идемо на реку” (Ako sutra bude lepo vreme, idemo na reku) — If the weather is nice tomorrow, we are going to the river. A rule is easier to test on sentences like this than to memorize as a wording: what surfaces in conversation is the sentence.

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Test the rule on examplesPractice