Any verb that undergoes a stem change in the present tense undergoes the same stem change in the present subjunctive in all forms except
nosotros/nosotras and
vosotros/vosotras. Only -
ir verbs undergo a stem change in the
nosotros/nosotras and
vosotros/vosotras forms and, only in these forms, they undergo
o>
u or
e>
i stem changes. Notice that
mostrar (Table
1 ) and
entender (Table
2 ) do not undergo a stem change in the
nosotros/nosotras and
vosotros/vosotras forms, but
dormir (Table
3 ) does because it is an -
ir verb.
|
TABLE 1
|
Subjunctive Present Tense for
Mostrar (to Show)
|
|
Subject
|
Verb
|
Subject
|
Verb
|
|
yo
|
muestre
|
nosotros/nosotras
|
mostremos
|
|
tú
|
muestres
|
vosotros/vosotras
|
mostréis
|
|
él
|
muestre
|
ellos
|
muestren
|
|
ella
|
muestre
|
ellas
|
muestren
|
|
usted
|
muestre
|
ustedes
|
muestren
|
|
|
TABLE 2
|
Subjunctive Present Tense for
Entender (to Understand)
|
|
Subject
|
Verb
|
Subject
|
Verb
|
|
yo
|
entienda
|
nosotros/nosotras
|
entendamos
|
|
tú
|
entiendas
|
vosotros/vosotras
|
entendáis
|
|
él
|
entienda
|
ellos
|
entiendan
|
|
ella
|
entienda
|
ellas
|
entiendan
|
|
usted
|
entienda
|
ustedes
|
entiendan
|
|
|
TABLE 3
|
Subjunctive Present Tense for
Dormir (to Sleep)
|
|
Subject
|
Verb
|
Subject
|
Verb
|
|
yo
|
duerma
|
nosotros/nosotras
|
durmamos
|
|
tú
|
duermas
|
vosotros/vosotras
|
durmáis
|
|
él
|
duerma
|
ellos
|
duerman
|
|
ella
|
duerma
|
ellas
|
duerman
|
|
usted
|
duerma
|
ustedes
|
duerman
|
|
The verb
jugar (to play) is exceptionally tricky because it is a stem-changer and also undergoes a spelling change. Because
jugar is a very common verb, it is worth learning the forms in Table
4 .
|
TABLE 4
|
Subjunctive Present Tense for
Jugar (to Play)
|
|
Subject
|
Verb
|
Subject
|
Verb
|
|
yo
|
juegue
|
nosotros/nosotras
|
juguemos
|
|
tú
|
juegues
|
vosotros/vosotras
|
juguéis
|
|
él
|
juegue
|
ellos
|
jueguen
|
|
ella
|
juegue
|
ellas
|
jueguen
|
|
usted
|
juegue
|
ustedes
|
jueguen
|
|