Serbian conjugation

Serbian verbs are conjugated in:Conjugation tables and explanations translated to English and adapted from: Stanojčić, Živojin; Popović, Ljubomir: "Gramatika srpskoga jezika (Udžbenik za I, II, III i IV razred srednje škole)", Zavod za udžbenike i nastavna sredstva, Beograd, 2000.]

4 Past tenses

Perfect

Aorist

Imperfect

Pluperfect
The last two have a very limited use ("imperfect is still used in some dialects, but majority of native Serbian speakers consider it archaic; it may also be found in literature")

1 Future tense
1st future tense - as opposed to the 2nd future tense or the future exact, which is considered a tense of the conditional mood by some contemporary linguists

1 Present tense

Auxiliary Verbs

Verb "јесам"

Verb "јесам" is often regarded as the verb "to be" in the present tense. It is a defective verb. It does not have the infinitive form; its basic dictionary form is "јесам" which is the present tense 1st person singular of the verb itself. Furthermore, it has the forms of present tense only:

This technique applies to verbs such as:
"видети" (to see)
"ходати" (to walk)
"причати" (to talk)
"морати" (must)

Irregular verbs

Irregular verbs are more complex to conjugate than regular verbs. Here is an example of the verb
Моћи ("to can, to be able to")

References