comparatives and superlatives
definite articles
demonstrative adjectives
demonstrative pronouns
direct and indirect object pronouns
double object pronouns
hacer expressions
noun suffix
passive voice
personal pronouns
por and para
possessive adjectives
possessive pronouns
present tense
preterite tense
ques expressions
reflexive verbs
relative pronouns
subject pronouns
present subjunctive
tener expressions


The imperfect tense is formed by dropping the infinitive ending (-ar, -er, -ir) and adding the correct imperfect endings to the infinitive stem.
There are no stem changes in the imperfect. The nosotros of -ar verbs and all -er and -ir forms have accent marks. Only three verbs have irregular forms in the imperfect; ir, ser, and ver
ir: iba, ibas, iba, íbamos, ibais, iban
ser: era, eras, era, eramos, erais, eran
ver: veía, veías, veía, veíamos, veíais, veían

Uses of the Imperfect tense

It is most often used to describe on-going actions in the past. It is the equivalent to the imperfect progressive.
Elena hablaba con Carlos. - Elena was speaking with Carlos.
Elena estaba hablando con Carlos. - Elena was speaking with Carlos.
Mientras José cantaba, Elena bailaba. - While José sang (was singing), Elena was dancing.
These on-going actions include habitual actions and descriptions of long-standing conditions.
Luis vivía con su tía. - Luis was living with his aunt.
Ella venía tarde. - She used to/would come late.
Había dos teatros. - There were two theaters.
It is used to describe a state of mind, a physical state, and to express the time of day in the past.
Era una noche oscurra. - It was a dark night.
Quería ir al cine, pero me sentía deprimido. - I wanted to go to the movies, but I felt depressed.
Era la una de la mañana. - It was one o'clock in the morning.
Cuando tenía doce años, yo era muy exigente. - When I was 12 years old, I was very demanding.


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Jaime El Sabio