Verbs

Infinitive verbs end with -ti or -či.

Slovene mostly uses the present, past and future tenses.

Present tense

In the present tense suffixes change according to plurality (singular, dual or plural) and grammatical person (1st, 2nd or 3rd person). They do not change for gender (masculine, feminine or neuter).

present tense of biti (to be) with pronouns
singular dual plural
m f n m f n m f n
1st person jaz sem jaz sem - midva sva midve sva - mi smo me smo -
2nd person ti si ti si - vidva sta vidve sta - vi ste ve ste -
3rd person on je ona je ono je onadva sta onidve sta onidve sta oni so one so ona so
present tense of biti (to be) without pronouns
singular dual plural
1st person sem sva smo
2nd person si sta ste
3rd person je sta so
present tense of sedeti (to sit)
singular dual plural
1st sedim sediva sedimo
2nd sediš sedita sedite
3rd sedi sedita sedijo
Note that the second e in sedeti changes to an i.
The -ti is removed leaving the root, sedi, to which suffixes are added.

The l-participle

This is used to form both the past and future tenses.

The l-participle of a verb is formed by removing the -ti of the infinitive form and adding a suffix which starts with the letter "l".

The particular l-participle suffix that is used depends on the gender and the plurality but not on the grammatical person of the subject of the verb.

l-participle
singular dual plural
m f n m f n m f n
1st, 2nd, 3rd persons ‑l ‑la ‑lo ‑la ‑li ‑li ‑li ‑le ‑la

Past tense

The past tense is formed by combining the relevant present tense form of the verb, biti (to be), with the appropriate form of the l-participle of a verb.

This holds true for forming the past tense of biti itself.

Using sedeti (to sit) as an example: we have seen that I sit (whether I refers to a male or female) is translated as sedim. I sat would be translated as sedel sem if the speaker was male and sedela sem if the speaker was female.

In summary, to form the past tense of a verb find the appropriate l-participle for the verb and combine it with the relevant form of the present tense of biti (to be).

Future tense

The future tense of biti (to be) can be used on its own or as an auxillary verb together with the l-particple of another verb giving the future tense of the latter verb.

future tense of biti (to be)
singular dual plural
1st person bom bova bomo
2nd person boš bosta boste
3rd person bo bosta bodo