Explain how stem-changing –ir verbs are different from stem-changing –ar and –er verbs in the present subjunctive in 2-4 sentences

Answer 1

In the present subjunctive, stem-changing –ir verbs exhibit a unique pattern compared to –ar and –er verbs. While both –ar and –er verbs only undergo a stem change in the present subjunctive for the first and second person singular and third person singular and plural forms, –ir verbs maintain their stem changes throughout all forms, including the nosotros and vosotros forms. For example, the verb "dormir" (to sleep) becomes "duerma" in the first person singular but changes to "durmamos" in the nosotros form, reflecting the stem change consistently. In contrast, verbs like "hablar" or "comer" do not change in the nosotros and vosotros forms.