1. The Past (Imperfect) Subjunctive

2. Past Subjunctive
A.k.a. the Imperfect subjunctive, it has many uses, which we will explore later

3. Past Subjunctive ra ramos ras ran
The past subjunctive is formed by starting with the 3rd person plural (ellos/ellas/uds) form of the Preterite tense, dropping the –ron ending, and adding the following: ra
ramos
ras
ran

4. hablara habláramos hablaras hablaran

5. COMER
comiera
comiéramos
comieras
comieran

6. viviera viviéramos vivieras vivieran

7. In Spain and other parts of the Spanish-speaking world, there is an alternate set of past subjunctive endings. These endings also exist in literary selections.
-se
-semos
-ses
-sen

8. HABLAR
hablase
hablásemos
hablases
hablasen

9. COMER
comiese
comiésemos
comieses
comiesen

10. VIVIR
viviese
viviésemos
vivieses
viviesen

11. Uses of the Past Subjunctive
The Past Subjunctive is require in UWEIRDO situations, just like the Present Subjunctive, except that the verb in the main clause is in the past (preterite, imperfect, perfect tenses) and the verb in the subordinate clause is in the past subjunctive.

12. Ejemplos: Presente Pasado Temo que llueva. Temía que lloviera.
Dudan que ella venga.
Dudaban que ella viniera.
Recomiendo que haga la tarea.
Recomendó que hicieras la tarea.

13. The past subjunctive can be used to make polite requests (often with QUERER and PODER):
¿Pudiera cerrar la ventana, por favor?
Quisiera un helado de chocolate, por favor.
¿Quisieras algo más?

14. The expression “como si”
The past subjunctive is always used after the expression, “como si” (as if):
Me saludó como si él no me conociera.
Los Smith me tartan como si fuera su hija.