a fi — why «Я студент» becomes Sunt student

Topic

The verb system — 16 aspects tracked across U01–U28 (topics.md)

This section

Complete for a fi in the present: all forms, plus negation and questions

Coverage

1 verb, 1 tense. a fi is irregular and teaches you nothing about regular verbs

Deferred

past → U09 · future → U11 · imperfect → U15 · passive → U23 · conditional → U18 · regular verbs → U05–U06

Serves

all four sections — the highest-frequency verb in the language

First: what a fi even is. The a is not part of the verb. It is the infinitive marker — exactly English "to".

a fi to be · a vorbi to speak · a învăța to learn · a iubi to love. Every verb in the ledger is stored this way.

The marker vanishes the moment you conjugate — as in English "to speak" → "I speak", never "I to speak".

Why sunt looks nothing like fi: "to be" is the most irregular verb in every language you know — EN to be → am, UA бути → є. There is no rule to derive. Memorise the six forms as a block.

Six slots, five distinct forms — sunt serves both eu and ei/ele. These are whole forms, not endings. Distinct enough that the pronoun can be dropped — context carries the rest.

eu sunt and ei sunt are identical — context separates them. Formal "you" is dumneavoastră sunteți, the voi form.

Negation — put nu in front. That is the whole rule.

UA «не» behaves the same way — the instinct maps directly.

Questions — nothing moves. Only your voice rises.

Ukrainian does the same («Ти студент?») — the habit maps directly. English is what interferes: there is no do or are to move to the front.

The trap: your instinct runs both Ukrainian moves at once — keep the pronoun, drop the verb:

Impossible in Romanian. The single most predictable error of your first month.

But with a normal verb you already do it right:

Identical behaviour. Ukrainian drops subject pronouns too — there is no new habit to build here. The systems diverge in exactly one place: Ukrainian normally leaves its present-tense "to be" unsaid — Romanian never does.