Breakdown of Si è svegliato pallido, come se avesse avuto un incubo.
essere
to be
un
a / an (masculine)
avere
to have
se
if
Questions & Answers about Si è svegliato pallido, come se avesse avuto un incubo.
Why do we use the pluperfect subjunctive (avesse avuto) after come se here?
The phrase come se (as if) introduces a hypothetical situation and always requires the subjunctive. We use the pluperfect subjunctive because the hypothetical event—the nightmare—occurred before the main action of waking up.
What would it mean if we used the imperfect subjunctive (avesse) instead of avesse avuto?
Is pallido acting as an adverb here?
No, pallido (pale) is an adjective describing the subject ("he"), not the way he performed the action of waking up. Just like in English ("he woke up pale"), Italian often places adjectives right after verbs of state or change to describe the subject's condition. If the subject were female, it would change to pallida.
A quick refresher: why is the auxiliary verb è used for svegliato?