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Conjugate stem changers in the preterite tense

Conjugate stem changers in the preterite tense. Essential grammar #58. Stem changing infinitives. Stem changing infinitives are named for what they do– change in the stem. You are going to make some alteration of the stem before adding the verb endings.

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Conjugate stem changers in the preterite tense

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  1. Conjugate stem changers in the preterite tense Essential grammar #58

  2. Stem changing infinitives Stem changing infinitives are named for what they do– change in the stem. You are going to make some alteration of the stem before adding the verb endings. You will use the preterite endings you already know. The hardest part of stem changers is knowing which ones change and which ones don’t.

  3. Stem changers There are 2 different ways a stem changing infinitive can change (2 categories). The first is ou. * This is not even close to what the present tense rules are. Read with care!

  4. Stem changers The first category is ou. (This includes present tense oue, uue). There is unique information about this stem change. In order to stem change in the preterite, the infinitive must end –ir. If it ends in –ar or –er, it is not considered a stem changer in the preterite and will conjugate like a regular infinitive.

  5. dormir = to sleep This is a stem changer in the preterite. First separate the stem from the infinitive ending. Dorm- is the stem. Make the stem change ou New stem durm- Put into box– Only the 3rd and 6th box make stem changes.

  6. dormir = to sleep

  7. Stem changers The second category is ei. (This includes present tense changes eie and ei). perferir = to prefer is a stem changer. It is the same steps as dormir. *When there is more than one syllable that could possibly make the change, choose the syllable closest to the verb ending.

  8. Preferir = to prefer First separate the stem from the infinitive ending. prefer- is the stem. Make the stem change ei New stem prefir- Put into box–In the preterite. It will only change in the 3rd and 6th boxes.

  9. preferir = to prefer

  10. Stem changers servir = to serve is a stem changer. It is the same steps as preferir.

  11. servir = to serve First separate the stem from the infinitive ending. serv- is the stem. Make the stem change ei New stem sirv- Put into box–In the preterite, only the 3rd and 6th boxes show change.

  12. servir = to serve

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