Stem Changing Verbs: Pensar, Querer, Preferir

pensar

to think

Pienso correr esta tarde.

I plan to run this afternoon.

pensar + infinitive

To plan to ________

¿Cuándo piensas estudiar el vocabulario de español?

When do you plan to study the Spanish vocabulary?

Pienso estudiar el vocabulario de español esta noche.

I plan to study the Spanish vocabulary tonight.

pensar en

To think about (someone or something)

¿En qué piensas?

What are you thinking about?

¿En quién piensas?

Who are you thinking about?

Pienso en mis abuelos.

I'm thinking about my grandparents.

Pienso en el vocabulario de español.

I'm thinking about the Spanish vocabulary.

querer

to want

preferir

to prefer

yo pienso ir al cine este fin de semana.

I plan to go to the movie theater this weekend.

tú piensas

you think (singular, familiar)

Ud. piensa

you think (singular, formal)

él piensa

he thinks

ella piensa

she thinks

nosotros pensamos

we think (masculine/mixed)

nosotras pensamos

we think (female)

vosotros pensáis

you all think (masculine/mixed) (Spain)

vosotras pensáis

you all think (female) (Spain)

Uds. piensan

you all think

ellos piensan

they think (masculine/mixed)

ellas piensan

they think (female)

yo quiero

I want

tú quieres

you want (familiar)

Ud. quiere

you want (formal)

él quiere

he wants

ella quiere

she wants

nosotros queremos

we want (masculine/mixed)

nosotras queremos

we want (female)

vosotros queréis

you all want (masculine/mixed) (Spain)

vosotras queréis

you all want (feminine) (Spain)

Uds. quieren

you all want

ellos quieren

they want (masculine/mixed)

ellas quieren

they want (female)

yo prefiero

I prefer

tú prefieres

you prefer (familiar)

Ud. prefiere

you prefer (formal)

él prefiere

he prefers

ella prefiere

she prefers

nosotros preferimos

we prefer (masculine/mixed)

nosotras preferimos

we prefer (female)

vosotros preferís

you all prefer (masculine/mixed) (Spain)

vosotras preferís

you all prefer (female) (Spain)

Uds. prefieren

you all prefer

ellos prefieren

they prefer (masculine/mixed)

ellas prefieren

they prefer (female)