Latin changes its passive strategy at the boundary between the present and perfect systems. Present, imperfect, and future passives are normally single words such as mittitur, mittēbātur, and mittētur. The perfect, pluperfect, and future perfect passives are normally compound forms: an agreeing perfect passive participle plus a finite form of sum.
The three tenses form one economical system. Learn the verb’s fourth principal part to obtain the participle, then let the tense of sum locate the completed action: missus est “he was/has been sent,” missus erat “he had been sent,” missus erit “he will have been sent.” The participle and auxiliary contribute different information, so both must be parsed. The individual Pluperfect Passive Indicative and Future Perfect Passive Indicative pages develop their time relations in detail.
The fourth principal part supplies the participle
Take mittō, mittere, mīsī, missum. The fourth principal part missum reveals the supine stem miss-. The perfect passive participle declines as a first-and-second-declension adjective:
| Subject | Masculine | Feminine | Neuter |
|---|---|---|---|
| singular | missus | missa | missum |
| plural | missī | missae | missa |
The participle agrees with the nominative subject in gender and number. The finite form of sum agrees with the subject in person and number and marks tense and mood. In litterae missae erant, missae is feminine nominative plural because litterae is feminine plural; erant is third-person plural imperfect indicative.
Litterae ā cōnsule missae sunt.
The letters were sent by the consul.
Dōnum ā mātre missum est.
The gift was sent by the mother.
English uses the unchanged word “sent” in both examples. Latin changes missae to missum because the subjects differ in gender and number.
One participle, three indicative tenses
The ordinary Classical pattern pairs the perfect passive participle with the present, imperfect, or future indicative of sum.
| Person | Perfect passive | Pluperfect passive | Future perfect passive |
|---|---|---|---|
| 1st singular | missus sum | missus eram | missus erō |
| 2nd singular | missus es | missus erās | missus eris |
| 3rd singular | missus est | missus erat | missus erit |
| 1st plural | missī sumus | missī erāmus | missī erimus |
| 2nd plural | missī estis | missī erātis | missī eritis |
| 3rd plural | missī sunt | missī erant | missī erunt |
The table uses a masculine subject. Replace missus/missī with missa/missae or missum/missa as agreement requires. First- and second-person forms referring to women likewise use feminine participles: missa sum “I (a woman) was sent,” missae estis “you women were sent.”
Perfect: completed by the present reference point
The perfect passive presents an event as complete. Depending on context, English may use a simple past or present perfect.
Porta tandem clausa est.
The gate was finally closed.
Omnēs hospitēs vocātī sunt; nunc cēnam parēmus.
All the guests have been invited; now let us prepare dinner.
The second example emphasizes present relevance, so “have been invited” is natural. Latin does not change its perfect form to match the English choice.
Pluperfect: completed before a past point
Cum ad portum vēnimus, nāvēs iam parātae erant.
When we came to the harbor, the ships had already been prepared.
The imperfect erant inside the compound does not make the preparation itself imperfect. The entire form parātae erant is pluperfect passive: the preparation is complete before the later past arrival.
Future perfect: completed before a future point
Ad hōram tertiam cēna parāta erit.
By the third hour, dinner will have been prepared.
Ubi haec lēx scrīpta erit, ad populum mittētur.
When this law has been written, it will be sent to the people.
The future erit locates the completed passive event before a relevant future stage. Contrast simple future scrībētur “will be written,” which predicts the action without presenting it as already complete at another future point.
Mood is carried by sum too
The indicative paradigm does not exhaust the perfect-system passive. The participle remains the same, while a subjunctive form of sum marks mood: the perfect subjunctive uses sim, sīs, sit, sīmus, sītis, sint; the pluperfect subjunctive uses essem, essēs, esset, essēmus, essētis, essent. Latin has no future subjunctive paradigm.
Dubitō num litterae iam missae sint.
I doubt whether the letters have already been sent.
Sī litterae missae essent, eās accēpissēmus.
If the letters had been sent, we would have received them.
In missae sint, present subjunctive sint combines with a perfect participle to make a perfect passive subjunctive; it does not make the whole phrase present. Likewise, missae essent is pluperfect passive subjunctive. Parse the participle and sum together before assigning either tense or mood.
Perfect passive versus perfect active
The third principal part builds the perfect active system; the fourth principal part builds the participle used in the perfect passive system.
Cōnsul nūntiōs mīsit.
The consul sent the messengers.
Nūntiī ā cōnsule missī sunt.
The messengers were sent by the consul.
Active mīsit comes from mīsī, the third principal part, and makes cōnsul the subject. Passive missī sunt comes from missum, the fourth principal part, and makes nūntiī the subject. Trying to derive mīsī sunt from the perfect active stem mixes two different systems.
A parsing routine for separated words
Latin often separates the participle from sum, especially in (literary) or rhetorically balanced prose. Word order does not dissolve the compound.
Illae urbēs captae multōs ante annōs ab hostibus erant.
Those cities had been captured by the enemy many years earlier.
To parse this sentence:
- Recognize captae as feminine nominative plural from captum, the fourth principal part of capiō.
- Find plural erant and combine it with the participle.
- Match captae with illae urbēs, also feminine nominative plural.
- Classify captae erant as pluperfect passive indicative.
- Treat ab hostibus as the personal agent and only then translate.
The form of sum can also be omitted when context makes it recoverable, especially in compact (literary) narrative. Such ellipsis is not a new tense; the participle’s agreement and parallel syntax may supply the missing auxiliary.
Resulting state and completed event
Because the perfect passive combines a participle with sum, some contexts hover between a completed event and the state resulting from it. Porta clausa est can foreground “the gate was closed” as an event or “the gate is closed” as a present state. Adverbs, agent phrases, and surrounding verbs guide the reading.
Porta ā custōde clausa est herī.
The gate was closed by the guard yesterday.
Porta clausa est; aliā viā eāmus.
The gate is closed; let us go by another route.
Herī and the named agent favor an eventive perfect in the first example. The practical consequence in the second favors a present resultant-state interpretation. This overlap is genuine; do not claim that morphology always forces one English tense.
Productive pattern, lexical exceptions, and later expansion
The construction is productive for verbs with a perfect passive participle, but the participle itself may be irregular: scrīptum from scrībō, āctum from agō, lātum from ferō. Memorize the fourth principal part rather than inventing it.
Deponent verbs use passive-looking compounds with active meaning: profectus est means “he set out,” not “he was set out.” In impersonal perfect passives, the participle is neuter singular: pugnātum est “there was fighting.” Both are lexical or syntactic patterns, not failures of agreement.
Classical authors also use combinations such as laudātus fuī beside laudātus sum. These “extended” or fuī-type forms can sharpen completion or anteriority, and their distribution grows in later Latin. They are attested Classical forms, not mistakes, but beginners should first master the ordinary present/imperfect/future sum series because it organizes the core paradigm. Register and period matter: later developments must not be projected back as the only Classical norm.
Common Mistakes
1. Building the participle from the perfect active stem
❌ Haec fābula scrīpsa est.
Incorrect — scrīpsa is an invented form based on the third principal part scrīpsī.
✅ Haec fābula scrīpta est.
This story was written.
2. Ignoring agreement
❌ Litterae missus sunt.
Incorrect — missus is masculine singular but litterae is feminine plural.
✅ Litterae missae sunt.
The letters were sent.
3. Reading the auxiliary tense in isolation
❌ Urbs capta erat.
Wrong for ‘the city was being captured’ — the whole form is pluperfect passive, not imperfect passive.
✅ Urbs capiēbātur.
The city was being captured.
4. Using a compound for the present progressive passive
❌ Responsum scrīptum est nunc.
Wrong for ‘the reply is being written now’ — this normally expresses completion or a resulting state.
✅ Responsum nunc scrībitur.
The reply is being written now.
5. Giving a deponent compound passive meaning
❌ Mārcus profectus est ā patre.
Incorrect for ‘Marcus set out with his father’ — proficīscor is deponent, not a true passive.
✅ Mārcus cum patre profectus est.
Marcus set out with his father.
Key Takeaways
The perfect-system passive is built from the fourth-principal-part participle plus sum. Participial agreement marks the subject’s gender and number; the auxiliary marks person, number, tense, and mood. Present sum creates the ordinary perfect, imperfect sum the pluperfect, and future sum the future perfect. Parse the Latin pair before choosing among English past, present-perfect, and resultative translations.
Now practice Latin
Reading grammar gets you part of the way. The exercises are where it sticks — free, no signup needed.
Start learning Latin →Related Topics
- Future Passive IndicativeA2 — Build the two Latin future-passive patterns and use context to distinguish prediction, instruction, and overlapping forms.
- Personal Passive ConstructionsA2 — Turn an active object into a nominative passive subject while preserving agreement, agent, instrument, and other complements.
- Present, Perfect, and Supine StemsA1 — Map Latin’s three principal stem families to the tense, voice, and non-finite forms each family builds.
- Perfect Passive IndicativeA2 — Form the perfect passive indicative with an agreeing perfect passive participle and present-tense forms of sum.
- Pluperfect Passive IndicativeA2 — Form and interpret the pluperfect passive with an agreeing perfect passive participle and the imperfect of sum.
- Future Perfect Passive IndicativeA2 — Express an action that will already have been completed upon its subject by a future reference point.