رَأَيْتُ الْمُعَلِّمِينَ.
Translation: I saw the teachers.
رَأَيْتُ: past-tense verb; -tu is the subject.
الْمُعَلِّمِينَ: direct object, accusative with yāʾ.
Why? The teachers are the object of seeing; sound masculine plurals take yāʾ in the accusative.
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Noun Case Classes: Type 6 — Sound Masculine Plural and Related Forms
رَأَيْتُ الْمُعَلِّمِينَ.
Translation: I saw the teachers.
رَأَيْتُ: past-tense verb; -tu is the subject.
الْمُعَلِّمِينَ: direct object, accusative with yāʾ.
Why? The teachers are the object of seeing; sound masculine plurals take yāʾ in the accusative.