Regular AR
Regular ER/IR
Ir & Ser
Stem changers
-car, -gar, -zar
100

Tú__________(hablar)

hablaste

100

Yo________(comer)

comí

100

I went

Yo fui

100

Do AR and ER verbs stem change in the past?

No

100

What form is affected by this in the past?

The "yo" form

200

Yo________(cantar)

canté

200

Eduardo y yo_________(entender)

entendimos

200

She was

Ella fue

200

Only what kind of verbs stem change in the past?

IR verbs

200

What does the "c" change to?

c to qu

300

Nosotros_________(bailar)

bailamos

300

él________(correr)

corrió

300

We went

Nosotros fuimos

300

What shape do they stem change in?

A slipper

300

What does the "g" change to?

g to gu

400

Ella________(estudiar)

estudió

400

Ellas_________(aprender)

aprendieron

400

You (informal) were

Tú fuiste

400

Which forms stem change? (Hint:there are 6)

él, ella, usted, ellos, ellas, ustedes

400

What does the "z" change to?

z to c

500

Ustedes________(mirar)

miraron

500

Tú_________(beber)

bebiste

500

They were

Ellos fueron

500

What does the "o" change to? What does the "e" change to?

o to u, e to i

500

Why is there an issue with this category of verbs? Explain why there is an irregularity

By adding the é in the yo form, it changes the sound of the word.  So you change the spelling to maintain the original sound of the verb.