e > ie
e > i
o > ue
u > ue
Reglas
100

The "tú" form of the verb pensar.

What is piensas?

100

The "yo" form of the verb servir.

What is sirvo?

100

The "él/ella" form of the verb encontrar.

What is encuentra?

100

The "tú" form of the verb jugar.

What is juegas?

100

The stem change of the verb repetir.

What is e > i?

200

The "ellos/ellas" form of the verb empezar. 

What is empiezan?

200

The "ellos/ellas" form of the verb pedir.

What is piden?

200

The "tú" form of the verb almorzar.

What is almuerzas?

200

The "él/ella" form of the verb jugar.

What is juega?

200

The stem change of the verb perder.

What is e > ie?

300

The "yo" form of the verb preferir.

What is prefiero?

300

The "tú" form of the verb medir.

What is mides?

300

The "él/ella" form of the verb costar.

What is cuesta?

300

The "ellos/ellas" form of the verb jugar.

What is juegan?

300
The vowel that is changed if the stem of a verb has two of the same vowel. For example: preferir

What is the second vowel?

400

The "nosotros" form of the verb comenzar.

What is comenzamos?

400

The "nosotros" form of the verb servir.

What is servimos?

400

The "yo" form of the verb recordar.

What is recuerdo?

400

The "vosotros" form of the verb jugar.

What is jugáis?

400
The stem change that happens for "dormir" when used in the present progressive.

What is o > u?

500

Complete this sentence:

"Ella ______ (querer) un refresco."

What is quiere?

500

Complete this sentence: 

"Yo _____ (corregir) las pruebas".

What is corrigo?

500

Complete this sentence:

 "Tu _______ (dormir) todos los noches."

What is duermes?

500

Complete this sentence:

 "Mis amigos y yo ______ (jugar) futbol cada semana."

What is jugamos?

500

The stem change that happens for "pedir" when used in the present progressive.

What is e > i?

M
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