Imperfect - Imperfecto

    compr ar   beb er   viv ir
yo

él/ella/Ud.
nosotros, -as
vosotros, -as
ellos/ellas/Uds.
  compr
compr
compr
compr
compr
compr
aba
abas
aba
ábamos
abais
aban
  beb
beb
beb
beb
beb
beb
ía
ías
ía
íamos
íais
ían
  viv
viv
viv
viv
viv
viv
ía
ías
ía
íamos
íais
ían

Useful examples

Ayer hacía mucho calor
Yesterday it was very hot

Veníamos para casa cuando vimos a Lola
We were coming home when we saw Lola

Tenían mucha hambre y estaban enfermos
They were very hungry and sick

Manuel caminaba dos horas cada día
Manuel used to walk two hours every day

De pequeño jugaba con mis amigos al escondite
When I was a child I used to play hide-and-seek with my friends

Cuando yo era joven, Elisa trabajaba en el Hotel Sheraton
When I was young, Elisa was working at Hotel Sheraton

The Imperfect in the spoken language can show courtesy in certain contexts such in shops, restaurants, etc Eg:

¿Deseaba algo el señor?
Would you like anything, sir?