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Which verbs stem-change? Only –IR verbs stem-change and only verbs that stem-change in the present will also stem-change in the preterite (so not all

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Page 1: Which verbs stem-change? Only –IR verbs stem-change and only verbs that stem-change in the present will also stem-change in the preterite (so not all
Page 2: Which verbs stem-change? Only –IR verbs stem-change and only verbs that stem-change in the present will also stem-change in the preterite (so not all

Which verbs stem-change?

• Only –IR verbs stem-change and only verbs that stem-change in the present will also stem-change in the preterite (so not all –IR verbs)• Examples: dormir, mentir, morir,

pedir, preferir, servir, etc

• Only –IR verbs stem-change and only verbs that stem-change in the present will also stem-change in the preterite (so not all –IR verbs)• Examples: dormir, mentir, morir,

pedir, preferir, servir, etc

Page 3: Which verbs stem-change? Only –IR verbs stem-change and only verbs that stem-change in the present will also stem-change in the preterite (so not all

How do –IR verbs stem-change?

• -IR verbs stem-change in the él/ella and ellos/ellas forms. Not in any other form. • -IR verbs stem-change one of two

ways:–E->I–O->U

• -IR verbs stem-change in the él/ella and ellos/ellas forms. Not in any other form. • -IR verbs stem-change one of two

ways:–E->I–O->U

Note this is slightly different than the present tense!

Page 4: Which verbs stem-change? Only –IR verbs stem-change and only verbs that stem-change in the present will also stem-change in the preterite (so not all

Él/ella• Examples: competir -> él compitió

mentir -> él mintiódormir -> él durmiórepetir -> él repitiómorir -> él murióservir -> él sirvió

• Examples: competir -> él compitió

mentir -> él mintiódormir -> él durmiórepetir -> él repitiómorir -> él murióservir -> él sirvió

Page 5: Which verbs stem-change? Only –IR verbs stem-change and only verbs that stem-change in the present will also stem-change in the preterite (so not all

Ellos/ellas• Examples:

competir -> ellos compitieron

mentir -> ellos mintieron dormir -> ellos durmieron

repetir -> ellos repitieronmorir -> ellos murieronservir -> ellos sirvieron

• Examples: competir -> ellos

compitieronmentir -> ellos mintieron

dormir -> ellos durmieronrepetir -> ellos repitieronmorir -> ellos murieronservir -> ellos sirvieron

Page 6: Which verbs stem-change? Only –IR verbs stem-change and only verbs that stem-change in the present will also stem-change in the preterite (so not all

¡Practiquemos!Write each verb in the form in

parenthesis. 1.Medir (ella)2.Podrir (ellos)3.Sentir (yo)4.Vestir (nosotros)5.Sugerir (él)6.Preferir (tú)7.Dormir (ellos)

Write each verb in the form in parenthesis.

1.Medir (ella)2.Podrir (ellos)3.Sentir (yo)4.Vestir (nosotros)5.Sugerir (él)6.Preferir (tú)7.Dormir (ellos)

Ella midióEllos pudrieron

Yo sentíNosotros vestimos

Él sugirióTú preferiste

Ellos durmieron