# Spanish/Lessons/El tiempo pasado

This section of the Spanish wikibook discusses the Spanish past tense. You have presumably learned about the present tense, therefore this section assumes a knowledge of said tense and previously learned vocabulary.

## La formación del pretérito

The preterite is used to speak of an event that happened at a specific time (I went to Sallly's (yesterday)). First, we must learn the preterite tense, is used for past actions that are seen as completed. There are two different forms of the preterite, one for -ar verbs and a separate form for -er and -ir verbs.

### Los verbos regulares del pretérito: -ar

Let us learn some conjugation for regular -ar verbs in the preterite now. For example:

#### El pretérito - ejemplos de verbos -ar

cantar (to sing) :
| | Singular | Plural |
| 1st person | canté | cantamos |
| 2nd person | cantaste | cantasteis |
| 3rd person | cantó | cantaron |
nadar (to swim) :
| | Singular | Plural |
| 1st person | nadé | nadamos |
| 2nd person | nadaste | nadasteis |
| 3rd person | nadó | nadaron |
Notice the pattern: in each form, you must drop the "ar" in the infinitive form. For the first person singular, you add "-é", for the second person singular you add "-aste", for the third it is "-ó". As for plural, in the first person "-amos" is added, in the second "-asteis", and in the third we add "-aron".
On to the exercises...

### Los verbos regulares del pretérito: -er e -ir

Now, we will learn the conjugation for regular -er and -ir verbs. For example:

#### El pretérito - ejemplos de los verbos -er e -ir

beber (to drink) :
| | Singular | Plural |
| 1st person | bebí | bebimos |
| 2nd person | bebiste | bebisteis |
| 3rd person | bebió | bebieron |
vivir (to live) :
| | Singular | Plural |
| 1st person | viví | vivimos |
| 2nd person | viviste | vivisteis |
| 3rd person | vivió | vivieron |
Notice the pattern: in each form, you must drop the "er" or "ir" in the infinitive form. For the first person singular, you add "-í", for the second person singular you add "-iste", for the third it is "-ió". As for plural, in the first person "-imos" is added, in the second "-isteis", and in the third we add "-ieron".
On to the exercises...

### Los verbos con cambios de deletreo en la forma "yo": '-car', '-gar', '-zar'

There are also verbs that have a spelling change in the first person singular form. These changes occur in verbs that end in "car", "gar", or "zar" and, in the first two cases, are necessary in order to maintain the original sound of the written verb (in speaking, we tend to pronounce the word correctly without having to think about it).
As explained in the "Alfabeto" section, both "c" and "g" have a 'hard' sound before an "a", "o" or "u", and a soft sound before "e" and "i". In the first-person preterite, then, the "é" ending would change the 'k/' sound of the "c" to an 's/' sound, and the hard-g sound to the Spanish "j" sound. In order to maintain the original sound of the verb, we change the spelling. For a "-car" verb, we change the "c" to a "qu" when it comes before "é":
practicar (to practice) :
| | Singular | Plural |
| 1st person | practiqué | practicamos |
| 2nd person | practicaste | practicasteis |
| 3rd person | practicó | practicaron |
Similarly, for a "-gar" verb, we add a "u" after the "g":
llegar (to arrive) :
| | Singular | Plural |
| 1st person | llegué | llegamos |
| 2nd person | llegaste | llegasteis |
| 3rd person | llegó | llegaron |
For "-zar" verbs, there is no longer a change in pronunciation, but tradition calls for the letter "z" to be followed only by "a", "o" or "u". With a following "e" or "i", we change the "z" to a "c":
comenzar (to begin) :
| | Singular | Plural |
| 1st person | comencé | comenzamos |
| 2nd person | comenzaste | comenzasteis |
| 3rd person | comenzó | comenzaron |
On to the exercises...

### Ejercicios del pretérito

These exercises take what we have learned so far and integrate everything together. Be familiar with the first three sections of el tiempo pasado.
On to the exercises...

## La formación del imperfecto

The imperfect tense is used to refer to actions in the past that occurred repeatedly. E.g. I used to play with dolls. These have an indefinite time. It's often used to describe past behaviours and likes, especially of childhood.

### La formación del imperfecto: los verbos -ar

Just as with the preterite, in the imperfect construction -ar verbs receive their own conjugation. For example:

#### El pretérito - ejemplos de los verbos -ar

hablar (to speak) :
| | Singular | Plural |
| 1st person | hablaba | hablábamos |
| 2nd person | hablabas | hablabais |
| 3rd person | hablaba | hablaban |
cantar (to sing) :
| | Singular | Plural |
| 1st person | cantaba | cantábamos |
| 2nd person | cantabas | cantabais |
| 3rd person | cantaba | cantaban |
Notice the pattern: in the imperfect construction we drop the "ar" and add our endings. As for the singular, in the first person we add "-aba", in the second person we add "-abas", and in the third person we add "-aba". In the plural, for the first person we add "-ábamos" (with an accent), for the second person we add "-abais", and in the third we add "-aban".
Onto the exercises...

### La formación del imperfecto: los verbos -er e -ir

Just as in the preterite, the -er and -ir verbs have their own conjugation. For example:

#### El pretérito - ejemplos de los verbos -er e -ir

correr (to run) :
| | Singular | Plural |
| 1st person | corría | corríamos |
| 2nd person | corrías | corríais |
| 3rd person | corría | corrían |
asistir (to attend) :
| | Singular | Plural |
| 1st person | asistía | asistíamos |
| 2nd person | asistías | asistíais |
| 3rd person | asistía | asistían |
Notice the pattern: in the imperfect construction we drop the "er" or "ir" and add our endings. As for the singular, in the first person we add "-ía", in the second person we add "-ías", and in the third person we add "-ía". In the plural, for the first person we add "-íamos" (with an accent), for the second person we add "-íais", and in the third we add "-ían".
Onto the exercises...

### Los verbos irregulares en la forma de imperfecto: 'ser', 'ir' y 'ver'

Only three verbs are irregular in the imperfect construction: ser, ir, and ver:
ser (to be) :
| | Singular | Plural |
| First | era | éramos |
| Second | eras | erais |
| Third | era | eran |
ir (to go) :
| | Singular | Plural |
| First | iba | íbamos |
| Second | ibas | ibais |
| Third | iba | iban |
ver (to see) :
| | Singular | Plural |
| First | veía | veíamos |
| Second | veías | veíais |
| Third | veía | veían |