Past Tense vs Imperfect. Exercises and explanations

http://users.ipfw.edu/jehle/courses/PRETIMP.HTM (Read this topic)

Excersises to complete and print para el Lunes 11.

http://wps.prenhall.com/ml_zayas_arriba_5/63/16367/4190163.cw/index.html
Open 1. The imperfect tense of regular and irregular verbs Capitulo 8  (Arriba)
                Exercises: Imperfect of regular verbs
                                  Uses of Imperfect.


http://wps.prenhall.com/ml_zayas_arriba_5/63/16368/4190359.cw/index.html (verb ser/ ir- conjugation Past Tense- pags. 268- Dos Mundos)

Capitulo 7 (Arriba)
1. Irregular verbs in the preterit (II)

Preterit forms of ser and ir

After read the following explanation, complete the next exercise. Read pags. 331- 332 (Saying what you used to do)- Dos Mundos.

Book; Arriba.

3. The preterit of regular verbs

Preterit
Regular verbs in the preterit

Diferences between Past Tense and Imperfect Tense.

In Spanish, the two simple past tenses that are predominantly used, are called the Imperfect and the Preterite and it is perfectly understandable for students, who are learning about past tenses for the first time, to be unsure as to which of these two tenses to use and when.
It goes without saying that both tenses are used to describe past actions or states but each is used differently and the following rules will hopefully clear up any confusion.
When to Use the Preterite
The preterite tense is used to express an action that was completed at some time in the past, listed here are some specific uses and examples:
When referring to a series of actions in the past:
Me desayuné, limpié la casa y me fui a la estación - I had breakfast, cleaned the house, and went to the station.
When referring to the beginning or the end of a past event:
La fiesta empezó a las diez - The party began at 10:00
When referring to things that are seen as being complete:
Dejó el trabajo hace un año - You left the job a year ago
When to Use the Imperfect
The imperfect tense expresses an action or state that was ongoing during the past and if it is uncertain whether it has been completed. Specific uses and examples are listed below:
To explain an action that a person did in the past habitually:
Cuando estábamos en el colegio, jugábamos al fútbol todos los jueves. - When we were at school, we used to play football every Thursday
To refer to an action without making reference to an end or a beginning:
Mi mujer tenía dolores de cabeza frecuentes - My wife had frequent headaches
When referring to actions that were taking place simultaneously in the past:
Mi hijo miraba televisión y mi hija cantaba - My son was watching television and my daughter was singing
When describing physical, emotional or mental states or conditions:
Estaba tan feliz que quería llorar - I was so happy that I wanted to cry
When referring to a past time:
Eran las ocho y media de la tarde- It was 8:30 p.m.
Era la una de la mañana - It was 1:00 a.m.
When describing an action or state that happened at some point in the past and that lasted for a certain amount of time and that happened prior to another past action.
Hacía todo el día que esperando cuando mi mujer llegó - I had been waiting all day when my when arrived