Question 1

Why do we use both O roubo at the start and the pronoun -lo at the end? Isn't that redundant?

Accepted Answer

This is a classic example of topicalization (specifically, left-dislocation). By moving the direct object (O roubo) to the front of the sentence, we emphasize it as the main topic. When we do this in Portuguese, we need a resumptive clitic—the pronoun -lo—attached to the verb to grammatically refer back to that front-loaded object. Without -lo, the sentence would feel grammatically incomplete.

Question 2

Why does comprovar change to comprová-lo?

Accepted Answer

When attaching the direct object pronouns o, a, os, or as to a verb ending in -r, -s, or -z, you drop that final consonant and add an l to the pronoun (making it -lo here). Since we dropped the -r from comprovar, we must add an acute accent to the final a (comprová) to ensure the pronunciation stress stays on that last syllable.

Question 3

Could we attach the pronoun to the first verb and say conseguiu-o comprovar?

Accepted Answer

Yes, you can. In a verb phrase with an auxiliary verb (conseguiu) and an infinitive (comprovar), European Portuguese allows you to attach the clitic pronoun to either verb. Attaching it to the infinitive (comprová-lo) is very natural and frequently preferred, but both are grammatically correct.

Question 4

Why use comprovar here instead of just provar?

Accepted Answer

While both translate to prove, comprovar carries a stronger nuance of corroborating, confirming, or providing hard evidence for something already claimed or suspected (like a theft). provar is more general, and it is also the word used for to taste or to try on.

O roubo, o vídeo conseguiu comprová-lo.

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