Breakdown of Él tenía un gran potencial; lamenté que lo hubiera desperdiciado.
él
he
tener
to have
un
a, an (masculine)
que
that / than
lo
it / him (direct object)
haber
(auxiliary) have
lamentar
to regret / to be sorry
grande
great, outstanding
el potencial
potential
desperdiciar
to waste
Questions & Answers about Él tenía un gran potencial; lamenté que lo hubiera desperdiciado.
Why do we use the past perfect subjunctive (hubiera desperdiciado) here?
The verb lamentar (to regret) expresses an emotion, which triggers the subjunctive in the following clause. Because the regret happened in the past (lamenté), and the wasting happened before that regret, we need the past perfect subjunctive (hubiera desperdiciado) to express a prior completed action.
Why is tenía in the imperfect tense while lamenté is in the preterite?
Why does the sentence say gran potencial instead of grande potencial?
What does the pronoun lo refer to, and why is it placed before hubiera?
The pronoun lo means 'it' and refers back to the masculine noun potencial. In compound tenses formed with haber, object pronouns must always be placed immediately before the conjugated auxiliary verb (hubiera). They cannot be attached to the past participle (desperdiciado).
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