I am (ser)
soy
you are (ser)
eres
I will be (ser)
seré
you will be (ser)
serás
he/she/usted will be (ser)
será
he/she/usted is (ser)
es
we are (ser)
somos
we will be (ser)
seremos
you (plural) are (ser)
sois
they are (ser)
son
you (plural) will be
seréis
they will be (ser)
serán
I was (ser imperfect)
era
I was (ser preterite)
fui
you were (ser preterite)
fuiste
he/she/usted was (ser preterite)
fue
you were (ser imperfect)
eras
he/she/used was (ser imperfect)
era
we were (ser imperfect)
éramos
you (plural) were (ser imperfect)
erais
we were (ser preterite)
fuimos
you (plural) were (ser preterite)
fuisteis
they were (ser imperfect)
eran
they were (ser preterite)
fueron