Da, zato što, ako, kad: two thoughts in one sentence

Until now the sentences were short: one thought, one sentence. From here on that will not do — without "because", "if" and "when" you cannot even tell about yesterday. You need four links, and three of them behave the way English ones do. For example: “Не могу да дођем зато што радим” — I cannot come because I am working. A rule from the Serbian course: worked out on examples, not memorized as a wording.

Updated September 1, 2026 · Lingofly

How it works

Until now the sentences were short: one thought, one sentence. From here on that will not do — without "because", "if" and "when" you cannot even tell about yesterday. You need four links, and three of them behave the way English ones do.

Zato što — because: Ne idem zato što pada kiša. Ako — if: Ako budeš slobodan, javi se. Kad — when: Kad stignem, zvaću te. The order is free; the clause may come first — then a comma follows it, as in English "When I arrive, I'll call you". And one rule English does not have: after ako and kad the future is spoken in the present tense. Not "ako ćeš biti" but ako budeš; not "kad ću stići" but kad stignem — English takes a half-step there with "If you ARE free tomorrow", Serbian takes the whole step.

The fourth link is da, and it is the big one — three jobs at once. Job one: it introduces reported thought, like English "that": Mislim da je zanimljivo — I think that it is interesting. Job two: it replaces the to-infinitive after a modal or volitional verb. A Belgrader will not say "moram raditi" — he says moram da radim, hoću da spavam, počinjem da razumem. After da stands the present in the SAME person as the main verb, and this is the single most frequent construction of Serbian speech. Job three: purpose, where English uses "to" or "in order to": Došao sam da pomognem — I came to help.

The practical advice that saves months: when you do not know how to build a Serbian phrase with an infinitive — do not hunt for the infinitive. Build da + the present, and you land in the living norm of Belgrade. The infinitive is not a mistake, but it sounds written and Croatian; da sounds like the street.

Table

Da, zato što, ako, kad: two thoughts in one sentence
the linkwhat it introducesexamplewhat to remember
dathat; to-; in order tomoram da ideminstead of the to-form
zato štoa reasonne idem zato što kiša padalike "because"
jera reason, bookishne idem jer pada kišathe same, in one word
akoa conditionako budesh slobodanthe future stays present
kadtimekad stignem, zvaću tethe future stays present
iakoa concessioniako je hladno, šetamoalthough

By example

  • Не могу да дођем зато што радим
    Ne mogu da dođem zato što radim
    I cannot come because I am working
  • Ако буде лепо време, идемо на излет
    Ako bude lepo vreme, idemo na izlet
    If the weather is nice, we are going on an excursion
  • Кад деца порасту, биће лакше
    Kad deca porastu, biće lakše
    When the children grow up, it will be easier

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

Da, zato što, ako, kad: how does it work in Serbian?

Until now the sentences were short: one thought, one sentence. From here on that will not do — without "because", "if" and "when" you cannot even tell about yesterday. You need four links, and three of them behave the way English ones do.

What does it look like in an example sentence Serbian?

“Не могу да дођем зато што радим” (Ne mogu da dođem zato što radim) — I cannot come because I am working. 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