Spanish: An Essential Grammar

In other words, the vowel is changed in the 1st, 2nd (excluding the

vosform) and 3rd persons singular, and in the 3rd person plural. The

vowels that are affected are e, which changes to ie, and o, which changes

to ue. These two patterns of change are illustrated in Tables 10.3 and

10.4.

Table 10.3-arand -erradical changes (indicative)

Person Pensar‘think’ Volver‘return’

Singular

1 (yo) pienso vuelvo

2 (tú) piensas vuelves

(vos) pensás [LA] volvés [LA]

3 (él etc.) piensa vuelve

Plural

1 (nosotros) pensamos volvemos

2 (vosotros) pensáis [SP] volvéis [SP]

3 (ellos etc.) piensan vuelven

Table 10.4-arand -erradical changes (subjunctive)

Person Pensar Volver

Singular

1 (yo) piense vuelva

2 (tú/vos) pienses vuelvas

3 (él etc.) piense vuelva

Plural

1 (nosotros) pensemos volvamos

2 (vosotros) penséis [SP] volváis [SP]

3 (ellos etc.) piensen vuelvan

1111

2 3 4 5 6 7 8 9

1011

1

12111

3 4 5 6 7 8 9

20111

1 2 3 4 5 6 7 8 9

30111

1 2 3 4 5 6 7 8 9

40

41111

10

Verb forms

100