Grammatical conjugation
Grammatical conjugation is the creation of derived forms of a verb from one basic form. Conjugation may be affected by person, number, gender, tense, mood, voice, or some other language-specific factor or factors. When a verb is used to function as the action done by a subject, the verb must be conjugated in most languages.
For example, here's a sample conjugation of the English verb to be and its Latin and French equivalents, esse and être. Except for the infinitive, which is given in the present form, all the verbs listed are in the present indicative active.
Form / Person
English
Latin
French
Infinitive
to be
esse
être
1st singular
I am
sum
je suis
2nd singular
you are
es
tu es
3rd singular
he, she, or it is
est
il/elle est
1st plural
we are
sumus
nous sommes
2nd plural
you are
estis
vous êtes
3rd plural
they are
sunt
ils/elles sont