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"La semana pasada" is a phrase which is often translated as "last week", and "yo" is a pronoun which is often translated as "I". Learn more about the difference between "la semana pasada" and "yo" below.
la semana pasada()
yo()
A pronoun is a word that stands in for a noun (e.g., she).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
3. (psychology)
