Hablar standard imperfect
Hablaba Hablamos
Hablabas
Hablaba Hablaban
Comer imperfect standard
Comia Comiamos
Comias
Comia. Comian
Vivir standard imperfect
Vivia viviamos
Vivias
Vivia vivian
Irregular 1 ser
Era eramos
Eras
Era. Eran
Irregular 2 Ir
Iba ibamos
Ibas
Iba. Iban
Irregular 3 ver
Veia veiamos
Veias
Veia. Veian
Use of the imperfect Duration of time
The imperfect is used to describe a state of events that existed for sometime in the past or for actions that occurred repeatedly given timeframe, habitual past actions duration of time is emphasized with the imperfect
Use of the inperfect used to happen
The imperfect is used to tell that something used to happen or was happening
Use of imperfect emotions
The imperfect, rather than the preterite, is generally used to describe mental or emotional states, including plans or intentions.
Use of the imperfect what was going on when another action occurred
The imperfect, it’s also used to describe what was going on when another action occurred; the latter action is usually in the preterit
Use of the imperfect time in past of age of person
The imperfect is also used to tell time in the past, or the age of a person.
Difference between preterit and imperfect. Duration emphasize
The choice between the preterite and the imperfect depends upon how the speaker or writer views the situation. If he or she’s focusing on just the beginning or the end of an action or sees it as definitely completed, the predator is used. But to emphasize its duration, the imperfect is used. 
Difference between preterit and imperfect. Describing and narrating
In general, the preterite is used to narrate, and the imperfect is to describe often when telling a story, the speaker or writer set the stage with the imperfect, describing what is going on, then switches to the preterit to relate the action 
Difference between preterit and imperfect repeated action in past
To express a repeated or habitual action in the past, the imperfect is generally used
Difference between preterit and imperfect specific number of times in the past
When there’s a reference to a specific number of times, the preterit is used since it is clear that the action is completed.
Verb with different meanings in preterit and imperfect. Conocer
Preterit to meet for the first time
Imperfect to know, be acquainted with
Verb with different meanings in preterit and imperfect saber
Preterit to find out
Imperfect to know, facts or procedures
Verb with different meanings in preterit and imperfect. Poder
Imperfect to love/want
Verb with different meanings in preterit and imperfect poder
Preterit to manage or succeed in in the negative to try and fail
Imperfect.
To be able to
To indicate an action began in past and continues to present
Hace +time period +que + present tense clause
Hace Muchos Años, Que gozan de Bueno Salud
They have been enjoying good health for many years
To indicate that action began in the past and continued until sometime later in the past
Hacia + time period + Que+clause in imperfect tense
Hacia diez anos Que mis padres Esteban Casados Cuando yo Naci
My parents had been married for 10 years when I was born 
To ask how long an action situation has been going on
Cuanto tiempo Hace (Hacia) Que
Cuanto Tiempo, hace Que Esta Casado
How long has he been married? 
Hace can also mean ago when the main verb is in the past tense
Se Casaron Hace dos semanas.
They got married two weeks ago 
