There is another subjunctive tense to use when the subjunctive is necessary but the sentence is in a past tense. Technically, it is called the
imperfect subjunctive, but that title is unnecessarily confusing. There is only one way to put the subjunctive in the past tense, and because it's based on the preterit tense, it's more fitting to call it the “past subjunctive.” Before you can learn how the past subjunctive is used in sentences, however, you must first learn to create the forms.
All verbs, without exception, follow the same rules for forming the past subjunctive; thus, the past subjunctive tense has no irregular verbs. Although that sounds simple, there is one difficulty: The first rule is to start with the third person plural form of the preterit. There are a plethora of verbs that are irregular in the preterit, but once you've remembered the
ellos form, you can easily turn the preterit into the past subjunctive.
All verbs end in
-ron in the third person preterit form. Remove the
-ron and add the endings in Table
1 .
|
TABLE 1
|
Past Subjunctive Verb Endings
|
|
Subject
|
Ending
|
Subject
|
Ending
|
|
yo
|
-ra
|
nosotros/nosotras
|
(accented vowel) + -
ramos
|
|
tú
|
-ras
|
vosotros/vosotras
|
-rais
|
|
él
|
-ra
|
ellos
|
-ran
|
|
ella
|
-ra
|
ellas
|
-ran
|
|
usted
|
-ra
|
ustedes
|
-ran
|
|
Notice that the vowel in front of the
nosotros/nosotras ending must have an accent mark. As you can see in the
tener example in Table
2 , that is
é for some verbs. And as you can see in Table
3 ,
á may be the accented vowel in front of some
nosotros/nosotras endings.
|
TABLE 2
|
Past Subjunctive of the Verb
Tener
|
|
Subject
|
Verb
|
Subject
|
Verb
|
|
yo
|
tuviera
|
nosotros/nosotras
|
tuviéramos
|
|
tú
|
tuvieras
|
vosotros/vosotras
|
tuvierais
|
|
él
|
tuviera
|
ellos
|
tuvieran
|
|
ella
|
tuviera
|
ellas
|
tuvieran
|
|
usted
|
tuviera
|
ustedes
|
tuvieran
|
|
|
TABLE 3
|
Past Subjunctive of the Verb
Hablar
|
|
Subject
|
Verb
|
Subject
|
Verb
|
|
yo
|
hablara
|
nosotros/nosotras
|
habláramos
|
|
tú
|
hablaras
|
vosotros/vosotras
|
hablarais
|
|
él
|
hablara
|
ellos
|
hablaran
|
|
ella
|
hablara
|
ellas
|
hablaran
|
|
usted
|
hablara
|
ustedes
|
hablaran
|
|
The verb
tener in Table
2 serves as a good example because it shows how different a verb can look in the past subjunctive due to the fact that the
ellos preterit form often has little in common with the infinitive form.
Remember the following rule:
Remember the following rule:
There is another set of endings, which is less frequently used, that can be used instead of the
-ra/-ras/-ramos/-rais/-ran endings to create the past subjunctive. In Table
4 , notice that the letters
-se replace
-ra in every form. To use these endings, you must also use the
ellos form of the preterit minus the
-ron ending. There is no special reason why you would have to use the -
se endings because they are exactly the same as the -
ra endings; just be prepared to understand what they mean when you hear or see them.
|
TABLE 4
|
The Other Past Subjunctive Endings
|
|
Subject
|
Ending
|
Subject
|
Ending
|
|
yo
|
-se
|
nosotros/nosotras
|
(accented vowel) +
-semos
|
|
tú
|
-ses
|
vosotros/vosotras
|
-seis
|
|
él
|
-se
|
ellos
|
-sen
|
|
ella
|
-se
|
ellas
|
-sen
|
|
usted
|
-se
|
ustedes
|
-sen
|
|
|
TABLE 5
|
The Verb
Tener Using the Other Past Subjunctive Endings
|
|
Subject
|
Verb
|
Subject
|
Verb
|
|
yo
|
tuviese
|
nosotros/nosotras
|
tuviésemos
|
|
tú
|
tuvieses
|
vosotros/vosotras
|
tuvieseis
|
|
él
|
tuviese
|
ellos
|
tuviesen
|
|
ella
|
tuviese
|
ellas
|
tuviesen
|
|
usted
|
tuviese
|
ustedes
|
tuviesen
|
|
Remember the following rule:
|
TABLE 6
|
The Verb
Hablar Using the Other Past Subjunctive Endings
|
|
Subject
|
Verb
|
Subject
|
Verb
|
|
yo
|
hablase
|
nosotros/nosotras
|
hablásemos
|
|
tú
|
hablases
|
vosotros/vosotras
|
hablaseis
|
|
él
|
hablase
|
ellos
|
hablasen
|
|
ella
|
hablase
|
ellas
|
hablasen
|
|
usted
|
hablase
|
ustedes
|
hablasen
|
|
There are so many irregularities in the preterit tense that it is necessary to review the preterit tense with a special focus on the third person plural (
ellos) form.