In AP Latin, passive voice marks the grammatical subject as receiving the action rather than doing it (amatur = "he is loved"). Present-system passives use -r endings (-r, -ris, -tur, -mur, -mini, -ntur); perfect-system passives combine the perfect passive participle with a form of sum (amatus est = "he was loved").
Passive voice flips the direction of the action. In an active sentence the subject does something (Caesar urbem cepit, "Caesar took the city"); in a passive sentence the subject has something done to it (urbs capta est, "the city was taken"). The doer, if mentioned at all, gets demoted to an ablative of agent with a/ab (a Caesare, "by Caesar") or a plain ablative of means if it's a thing.
Latin builds the passive two different ways, and you need both. The present system (present, imperfect, future) just swaps in passive personal endings: -r, -ris, -tur, -mur, -mini, -ntur. So amat becomes amatur, "he is loved." The perfect system (perfect, pluperfect, future perfect) is a two-word combo, the perfect passive participle plus a form of sum. So amatus est means "he was loved" or "he has been loved." That participle agrees with the subject in gender, number, and case, which is why you'll see capta est with a feminine subject like urbs. Mixing up which system you're in is one of the fastest ways to lose translation points.
Passive voice isn't tied to one unit. It runs through every line of Caesar and Vergil you read, so it supports the core AP Latin skills of reading, translating literally, and analyzing the text. Caesar in particular loves the passive in his battle narratives (things get fortified, sent, captured, and reported constantly), and Vergil uses passive and middle-style forms for emotional and physical states. The exam's literal translation standard means tense AND voice both have to be right. Translating capta est as "she captures" gets you zero credit for that segment, even if you nailed the vocabulary. Passive voice is also the gateway to bigger constructions you'll see on every passage: the ablative of agent, the perfect passive participle, and the ablative absolute all depend on it.
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Deponent Verbs (Units 1-8)
Deponents are the trap built into passive voice. They look 100% passive (sequitur, conatus est) but translate as active ("he follows," "he tried"). If you've memorized your passive endings, you can spot a deponent instantly; the form is passive, the meaning is not. Knowing real passives cold is what makes deponents readable.
Ablative of Agent and the Ablative Case (Units 1-8)
Passive verbs are why the ablative of agent exists. When a person performs the action of a passive verb, Latin tags them with a/ab plus the ablative (a militibus, "by the soldiers"). No preposition and a non-person? That's means, not agent. MCQs love testing whether you can tell these apart, and the passive verb is your signal to look for it.
Ablative Absolute (Units 1-8)
Most ablative absolutes are powered by the perfect passive participle, the same form that builds your perfect passive tenses. His rebus cognitis ("with these things having been learned") is basically a compressed passive clause. If you can translate cognita sunt, you can unpack an ablative absolute.
Agreement (Units 1-8)
Perfect passive forms are a two-word team, and the participle half must agree with the subject in gender, number, and case. Urbes captae sunt, not captus. Spotting that agreement is often how you find the subject of a long Latin sentence in the first place.
Passive voice shows up everywhere on the AP Latin exam, even when the question never says the word "passive." On the literal translation FRQs, the scoring guidelines break the passage into segments, and a verb segment is only correct if you render person, number, tense, AND voice accurately. "He was sent" and "he sent" are different answers, and only one earns the point. Multiple-choice questions ask you to identify forms (is interfectus est perfect passive or a deponent?), name the case usage of an a/ab phrase (ablative of agent only works with a passive verb), and comprehend sight passages where the subject is receiving the action. Practical move: when you hit a -tur or -ntur ending or a participle + sum combo, mentally flag "passive" before translating, then check whether the verb is secretly a deponent.
Both use identical passive forms, but deponents translate as ACTIVE. Sequitur looks just like amatur, yet sequitur means "he follows," not "he is followed." The only way to tell them apart is vocabulary knowledge; if the dictionary entry ends in -or or -ri (sequor, sequi), it's deponent and you translate it actively. Translating a deponent passively (or a true passive actively) costs the whole segment on translation FRQs.
Passive voice means the subject receives the action instead of performing it, as in urbs capta est, "the city was taken."
Present-system passives (present, imperfect, future) use the endings -r, -ris, -tur, -mur, -mini, -ntur on the regular stem.
Perfect-system passives are two words, the perfect passive participle plus a form of sum, and the participle must agree with the subject in gender, number, and case.
A passive verb is your cue to look for an ablative of agent (a/ab + ablative for a person) or an ablative of means (plain ablative for a thing).
Deponent verbs have passive forms but active meanings, so check the dictionary entry before assuming a passive-looking verb is actually passive.
On translation FRQs, voice errors lose the point for that segment, so amatus est must come out as "he was loved," never "he loved."
Passive voice marks the subject as receiving the action rather than doing it. Amatur means "he is loved," while the active amat means "he loves." Latin forms it with -r endings in the present system and with the perfect passive participle plus sum in the perfect system.
No. Deponent verbs like sequor, conor, and loquor have passive forms but fully active meanings ("I follow," "I try," "I speak"). You have to know the vocabulary entry to tell, because the forms themselves are identical to true passives.
In the present, imperfect, and future tenses, replace the active endings with -r, -ris, -tur, -mur, -mini, -ntur (amat becomes amatur). In the perfect, pluperfect, and future perfect, combine the perfect passive participle with a form of sum (amatus est, amatus erat, amatus erit).
"He was loved" or "he has been loved." Even though est is present tense, the participle makes the whole form perfect passive. Translating it as present ("he is loved") is a classic error that costs the segment on the literal translation FRQ.
Agent is a person doing the action and takes a/ab (a Caesare, "by Caesar"); means is a thing and takes the plain ablative with no preposition (gladio, "by a sword"). Both depend on the verb being passive, which is why exam questions pair them with passive forms.