STEM-CHANGING -IR VERBS: E—IE

STEM-CHANGING -IR VERBS: E—IE . There are four types of stem-changing verbs: e→ie, o→ue, u→ue and e→i. The stem of the verb is what is left when the ending (-ar/-er/-ir) is dropped off. If there are two e’s in the stem the second e changes. The stem changes in all forms except the nosotros and vosotros. preferir (ie) = to prefer ................
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