Breakdown of Comandantul ar fi trebuit să ne avertizeze.
fi
to be (sunt, ești, este, suntem, sunteți, sunt)
avea
to have
ne
to us / us (direct object)
să
to (subjunctive marker)
trebui
to have to / to be needed (with a dative: to need)
avertiza
to warn
comandantul
the commander
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