Transcript Stem Changing Preterite Verbs

Stem Changing Preterite
Verbs
Review
The stem of a verb is what is left after you
have dropped the –ar, -er, -ir.
If you have a stem changing verb, there is a
change only in the stem of the verb. It does
NOT effect the verb endings for each tense.
A verb that is a stem changer in the present
indicative is not automatically a stem changer in
the preterite……………sometimes, a verb is a
stem changer in both, or in only one of the two.
Remember, in the present indicative
we call them BOOT verbs.
WHY?
Pensar (e>ie) – To Think
pienso
pensamos
piensas
piensa
piensan
Preterite verbs are not called boot
verbs because they change in a
different form.
E>I
Pedir – to ask for
pedí
pedimos
pediste
pidió
pidieron
Since there is no catchy name for these stem changers, I
have come up with my own (that’s always dangerous!)
THONG VERBS
Dormir (o>ue, u)– to sleep
dormí
dormimos
dormiste
durmió
durmieron