Breakdown of Penso che il ritardo della consegna sia stato inaccettabile.
essere
to be
di
of, from
il ritardo
delay
pensare
to think
Questions & Answers about Penso che il ritardo della consegna sia stato inaccettabile.
Why do we use sia stato here instead of the normal past tense è stato?
The phrase Penso che (I think that) expresses a personal opinion, which triggers the subjunctive mood. Because the unacceptable delay happened in the past (before your present thought), we need the past subjunctive (sia stato) to show that the action happened before the main clause.
How is the past subjunctive sia stato formed in this sentence?
It is made of a helper verb plus a past participle. Here, the helper verb is the present subjunctive of essere (sia) combined with the past participle stato. We use essere as the helper because the main verb is also essere (to be).
Is inaccettabile masculine or feminine here, since it follows both ritardo and consegna?
Why is it della consegna instead of just di consegna?