sostituivi

Sostituivi is the second-person singular imperfect indicative form of the Italian verb sostituire. The form translates as “you substituted” or “you were substituting” and is used to describe a past action in which one thing was replaced by another.

Etymology and morphology: Sostituire comes from Latin substituere. In Italian, the imperfect tense for -ire verbs uses endings like -ivo, -ivi, -iva. Sostituivi specifically corresponds to the subject tu in the imperfect and indicates a repeated or ongoing past action of replacing something.

Usage and examples: In narrative prose, sostituivi may appear when detailing steps in a repair or a process that involved replacements. Example: Tu sostituivi i fili difettosi con fili nuovi. Translation: You were substituting the faulty wires with new ones. Another example: Se avevi tempo, tu sostituivi le parti usurate quotidianamente. Translation: If you had time, you were replacing worn parts regularly.

Notes: Sostituivi is a finite verb form and requires a subject (tu). It is one of several imperfect forms of sostituire; other forms include sostituivo, sostituivi, sostituiva, sostituivamo, sostituivate, sostituivano. Related terms include sostituire (to substitute), sostituto (substitute), and sostituzione (substitution).