s2.3.1 Preterite -er/ir check

Front

Some REGULAR -er verbs change stems in the Preterite. Cierto o Falso?

Back

Falso

Answer explanation

Regular -ar verbs in the Preterite never change stems.

Regular -er verbs in the Preterite don´t change stems either.

SOME regular -ir verbs change stems in the Preterite.

Front

Some REGULAR -ir verbs change stems in the Preterite.

Back

Cierto

Answer explanation

Regular -ar verbs in the Preterite don't change stems.

Regular -er verbs in the Preterite don´t change stems either.

SOME regular -ir verbs change stems in the Preterite, but only in the él/ella/Ud. and ellos/Uds. forms.

We need to memorize which verbs have stem changes. Below is a list of verbs showing their stem changes in parentheses: the first stem change is for the simple present tense, and the one after the comma is for the Preterite tense.

dormir (ue,u) morir (ue,u) servir (i,i) pedir (i,i)

Front

The nosotros form of -ir verbs in the preterite looks the same as in the present.

Back

Cierto

Answer explanation

The nosotros form of –ar and -ir verbs in the preterite looks the same as in the present. The context will help you decide whether it is present or past.