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"Sustituido" is a form of "sustituir", a transitive verb which is often translated as "to substitute". "Sustituto" is a noun which is often translated as "substitute". Learn more about the difference between "sustituto" and "sustituido" below.
el sustituto, la sustituta(
soos
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tee
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too
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toh
)This means that the noun can be masculine or feminine, depending on the gender of the noun it refers to (e.g., el doctor, la doctora).
a. substitute (temporal)
La maestra dejó su plan de lecciones para el sustituto el día que no pudo venir.The teacher left her lesson plan for the substitute on the day she could not come in.
b. replacement (permanent)
Ben va a pasar su última semana antes de jubilarse formando a su sustituto.Ben is going to spend his last week before retirement training his replacement.
sustituir(
soos
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tee
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tweer
)A transitive verb is a verb that requires a direct object (e.g., I bought a book.).
a. to substitute
Cuando hago pan, siempre sustituyo el azúcar por miel.I always substitute honey for sugar when baking bread.
b. to replace
Las máquinas no pueden sustituir a los humanos en esta tarea.Machines can't replace people for this task.
c. to stand in for (temporarily)
Esta semana estoy sustituyendo a Jack porque está enfermo.I'm standing in for Jack this week because he is sick.
