Question

true or false
A stem-changing verb changes in all forms except for the Nosotros and vosotros forms

Answer 1

True. In Spanish, stem-changing verbs typically undergo a vowel change in all forms except for the nosotros and vosotros forms in the present tense. For example, in the verb "pensar" (to think), the stem changes from "e" to "ie" in most forms: yo pienso, tú piensas, él/ella piensa, but it remains "pensamos" in the nosotros form and "pensáis" in the vosotros form.