Subjunctive stem changers

Question 1

The present subjunctive is formed by:
Start with the yo form of the present indicative.
Drop the -o ending.
Add the appropriate endings:

Answer 1

• ar verbs:
  
  • e, -es, -e, -emos, -éis, -en
  • er and -ir verbs:
  • a, -as, -a, -amos, -áis, -an

Question 2

For -ar and -er stem-changing verbs, the formula applies except that there is no stem change in the nosotros and vosotros forms.

pensar (yo pienso)
pienso - o = piens

Answer 2

piens + e = piense
piens + es = pienses
piens + e = piense
pens + emos = pensemos
pens + éis = penséis
piens + en = piensen

Question 3

perder (yo pierdo)
pierdo - o = pierd

Answer 3

pierd + a = pierda
pierd + as = pierdas
pierd + a = pierda
perd + amos = perdamos
perd + áis = perdáis
pierd + an = pierdan

Question 4

contar (yo cuento)
cuento - o = cuent

Answer 4

cuent + e = cuente
cuent + es = cuentes
cuent + e = cuente
cont + emos = contemos
cont + éis = contéis
cuent + en = cuenten

Question 5

volver (yo vuelvo)
vuelvo - o = vuelv

Answer 5

vuelv + a = vuelva
vuelv + as = vuelvas
vuelv + a = vuelva
volv + amos = volvamos
volv + áis = volváis
vuelv + an = vuelvan

Question 6

For -ir stem-changing verbs, the formula applies except that the stem change in the nosotros and vosotros forms follows these patterns: o:ue verbs change o to u; e:ie verbs change e to i; e:i verbs change e to i

dormir (yo duermo)
duermo - o = duerm

Answer 6

duerm + a = duerma
duerm + as = duermas
duerm + a = duerma
durm + amos = durmamos
durm + áis = durmáis
duerm + an = duerman

Question 7

sentir (yo siento)
siento - o = sient

Answer 7

sient + a = sienta
sient + as = sientas
sient + a = sienta
sint + amos = sintamos
sint + áis = sintáis
sient + an = sientan

Question 8

pedir (yo pido)
pido - o = pid

Answer 8

pid + a = pida
pid + as = pidas
pid + a = pida
pid + amos = pidamos
pid + áis = pidáis
pid + an = pidan

Question 9

Present Subjunctive - -ar and -er stem-changing verbs

Answer 9

Conjugate just like regular subjunctives (using “yo” form of the indicative) except the stem change does not occur in the nosotros/vosotros forms:

pensar

piense
pienses
piense
pensemos
penséis
piensen

Question 10

Present Subjunctive - -ir stem-changing verbs

Answer 10

Conjugate just like regular subjunctives (using “yo” form of the indicative) except the stem change in the nosotros and vosotros forms follows these patterns:

o:ue verbs change o to u;

e:ie verbs change e to i;

e:i verbs change e to i.:

dormir - durmamos
sentir - sintamos
pedir - pidamos