False. In Spanish, verbs that end in -ar and -er do change in the past tense. The past tense (pretérito) forms of these verbs differ from their present tense forms, and they follow specific conjugation patterns. For example:
-
-ar verb (hablar):
- Present: yo hablo
- Past: yo hablé
-
-er verb (comer):
- Present: yo como
- Past: yo comí
Thus, both -ar and -er verbs do change in the past tense.