I (yo)

o

You (tu)

ar - as er - es ir - es

he/she (el/ella)

ar - a er - e ir - e

we (nosotros)

ar - amos er - emos ir - imos

you all (vosotros)

ar - ais er - eis ir - is

they (ellos)

ar - an er - en ir - en

preterit tense

happened in the past at a fixed time ( the phone rang at 3)

imperfect tense

happened in the past ongoingly (the phone was ringing) to describe people, places and things in the past (she had long hair, he was tall) talk about feelings in the past (I was angry)

present subjunctive

talking like a pirate (haya el gente - there be people)

conditional tense

to express probability, possibility or wonder, and is usually translated as would, could, must have or probably (he would study)