Latin Syntax

Comprehensive Latin syntax reference: all case uses (nominative through locative), ablative absolute, ACI, all 6 conditional types, all subjunctive clause types, and sequence of tenses — with full examples throughout.

Latin syntax is where the language becomes most challenging and most powerful. This page is a comprehensive reference covering case usage, all major subordinate constructions, indirect discourse, conditionals, and the subjunctive — with worked examples from classical authors throughout.

1. Nominative and Vocative

Nominative

The nominative is the case of the subject and the predicate noun/adjective.

Subject: the noun performing the action of the verb.

Latin Translation
Caesar vēnit Caesar came
Puerī lūdunt The boys are playing
Rōma capta est Rome was captured

Predicate nominative: after a linking verb (esse, fīerī, vidērī), a noun or adjective in the nominative describes or renames the subject.

Latin Translation
Caesar dux erat Caesar was a general
Virtūs est bonum Virtue is a good thing
Rōma magnā urbs facta est Rome became a great city

Vocative

The vocative is used for direct address. It is identical to the nominative except in 2nd declension -us nouns (which become -e) and 2nd declension -ius nouns (which become -ī).

Nominative Vocative Example
Marcus Marce Marce, veni! — "Marcus, come!"
Filius Filī Filī mī, audi! — "My son, listen!"
Puer Puer Puer, sta! — "Boy, stand!"
Dominus Domine Domine, miserēre! — "Lord, have mercy!"

The vocative is usually not the first word in the clause. It may appear anywhere and is set off by commas.

2. Uses of the Genitive

The genitive broadly expresses a defining or limiting relationship between two nouns. It answers "of what?" or "whose?"

2.1 Possessive Genitive

The most common use: expresses ownership or possession.

Latin Translation
liber Marcī the book of Marcus / Marcus's book
mūrī urbis the walls of the city
castra hostium the camp of the enemies
amor patriae love of the fatherland

2.2 Subjective vs. Objective Genitive

Both use the same form; context determines meaning.

Subjective genitive: the noun in the genitive is the subject of the verbal idea.

Latin Interpretation
amor Deī (subjective) the love that God has (God loves)
timor hostium (subjective) the fear the enemies have

Objective genitive: the noun in the genitive is the object of the verbal idea.

Latin Interpretation
amor Deī (objective) love directed toward God (we love God)
timor hostium (objective) fear of the enemies (we fear them)
dēsīderium pācis longing for peace
spem salūtis hope of safety

2.3 Partitive Genitive (Genitive of the Whole)

Expresses the whole from which a part is taken. Appears after superlatives, pronouns, words of quantity, and certain adverbs.

Latin Translation
nihil temporis nothing of time / no time at all
fortissimus omnium the bravest of all
pars exercitūs a part of the army
multi militum many of the soldiers
satis aquae enough of water / enough water
plus auxiliī more help (lit. more of help)
quid novī? What is new? (lit. what of new?)

2.4 Genitive of Description (Quality)

A noun modified by an adjective in the genitive describes a permanent or defining characteristic. Typically used for abstract qualities or measurements. (Compare with ablative of description, which is more common for physical traits.)

Latin Translation
vir magnae virtūtis a man of great virtue
puer summae spei a boy of the highest promise
rēs magnī mōmentī a matter of great importance
homo nullīus fidei a man of no trustworthiness

2.5 Genitive of Charge (Legal/Judicial)

With verbs of accusing, convicting, acquitting — the charge is in the genitive.

Key verbs: accūsāre (accuse), damnāre (condemn), absolvere (acquit), arguere (charge).

Latin Translation
damnātus furtī convicted of theft
accūsāvit eum proditiōnis he accused him of treason
absolvere aliquem capitis to acquit someone of a capital charge

2.6 Genitive of Value (Indefinite Value)

With verbs of valuing, buying, selling — expresses an indefinite degree of value using genitive of certain pronouns/adjectives. (Specific prices use the ablative.)

Latin Translation
floccī nōn faciō I don't care a straw (lit. I make nothing of a tuft of wool)
magnī aestimāre to value highly
parvī dūcere to consider of little account
nihilī est it is worth nothing
quantī constat? How much does it cost?

2.7 Genitive with Adjectives

Certain adjectives take a genitive complement — especially those meaning full of, desirous of, ignorant of, experienced in.

Adjective Meaning Example
perītus experienced in perītus bellī — experienced in war
imperītus inexperienced in imperītus rērum — inexperienced in affairs
plēnus full of plēnus spēī — full of hope
cupidus desirous of cupidus glōriae — eager for glory
studiosus devoted to studiōsus philosophiae — devoted to philosophy
memor mindful of memor officī — mindful of duty
immemor forgetful of immemor perīculī — forgetful of danger

2.8 Genitive with Certain Verbs

Some verbs, especially those related to memory, pity, and interest, govern the genitive.

Memory verbs (meminisse, oblīvīscī, recordārī):

Latin Translation
meminī tuī I remember you
oblītus est patriae he forgot his homeland

Pity verbs (miserērī, miserēscere):

Latin Translation
misereor patrum I pity the fathers
miserēre meī have pity on me

Impersonal expressions of interest: interest and rēfert + genitive of person.

Latin Translation
meā interest it is of concern to me
rēī pūblicae interest it is of concern to the state

2.9 Two Genitives with One Noun

Occasionally a noun stands in a double genitive relationship. The most common construction is genitive of value + genitive of possession:

Latin Translation
magnī est imperātōris it is [the mark] of a great commander
stultī est it is [the sign] of a fool
sapientiō est it is [characteristic] of a wise person

The construction means "it belongs to / is the mark of / is characteristic of."

3. Uses of the Dative

The dative broadly expresses the person (or thing) to or for whom something is done.

3.1 Indirect Object

The standard use: the recipient of the direct object.

Latin Translation
Caesarī librum dedī I gave the book to Caesar
Mīlitibus arma dedit He gave weapons to the soldiers
Tibi dīcō I am speaking to you

3.2 Dative of Reference / Interest

The dative can indicate the person in whose interest or for whose reference an action is performed — even when no direct giving is involved.

Latin Translation
mihi placet it pleases me (lit. it is pleasing to/for me)
nōbīs bene est things are going well for us
quid mihi Celsus agit? How is Celsus doing (from my perspective)?
tibi haec scrīpsī I wrote these things for you

Ethical dative: a dative of the speaker/listener, expressing emotional involvement:

Latin Translation
quid mihi Catulle? What are you up to, my Catullus?
ecce tibi homo! Look, your man is here!

3.3 Dative of Agent (with Passive Periphrastic)

With the passive periphrastic (gerundive + esse), the agent who must perform the action is in the dative, not the ablative.

Latin Translation
mihi eundum est I must go (lit. it is to-be-gone by me)
nōbīs Rōma relinquenda est We must abandon Rome
tibi haec facienda sunt You must do these things
Caesarī bellum gerendum erat Caesar had to wage war

Note: the gerundive agrees with the subject (the thing that must be done), not the dative agent.

3.4 Dative of Possession

With esse, the dative expresses the possessor. (English says "X has Y"; Latin says "Y is to/for X.")

Latin Translation
mihi nōmen est Mārcus My name is Marcus (lit. the name to me is Marcus)
mihi liber est I have a book
rēgī multī equī erant The king had many horses
cui bono? For whose benefit? / Who stands to gain?

3.5 Dative of Purpose and Double Dative

The dative can express the purpose or end for which something exists or happens. Often paired with a dative of reference (the double dative construction).

Latin Translation
auxilio vēnit He came as an aid / He came to help
mīlitēs praesidiō misit He sent soldiers as a garrison
mihi māgnō impedīmentō est It is a great hindrance to me (double dative)
hoc mihi cūrae est This is a concern to me

Structure of double dative: Dative of reference + dative of purpose.

3.6 Dative with Certain Adjectives

Adjectives expressing likeness, nearness, usefulness, pleasantness, and their opposites govern the dative.

Adjective Meaning Example
similis similar to similis patrī — similar to his father
dissimilis unlike dissimilis fratrī — unlike his brother
propinquus near to propinquus finibus — near the borders
ūtilis useful for ūtilis reī pūblicae — useful to the state
grātus pleasing to grātus rēgī — pleasing to the king
fidēlis faithful to fidēlis dominō — faithful to his master
iūcundus pleasant to iūcundus omnibus — pleasant to all

3.7 Dative with Compound Verbs

Many verbs compounded with prefixes (ad-, ante-, circum-, con-, in-, inter-, ob-, post-, prae-, pro-, sub-, super-) take a dative object.

Latin Translation
praeficere aliquem exercituī to put someone in charge of the army
resistere hostibus to resist the enemies
confidere amīcīs to trust in friends
nōcēre alicuī to harm someone
parcere victīs to spare the conquered
favēre populō to favor the people
obesse reī pūblicae to be harmful to the state
praeesse legiōnī to be in command of the legion

4. Uses of the Accusative

The accusative is the case of the direct object and of motion/extent.

4.1 Direct Object

The primary use: the noun receiving the action of a transitive verb.

Latin Translation
Caesarem vidī I saw Caesar
urbem cēpit He captured the city
amīcōs amā Love your friends

4.2 Subject of the Infinitive (ACI)

In indirect statement, the subject of the infinitive is accusative. (See Section 8 for full treatment.)

Latin Translation
dīcō Caesarem venīre I say that Caesar is coming
putō tē errāre I think you are mistaken

4.3 Object of Prepositions

Many prepositions governing the accusative express motion toward or spatial/temporal relationship.

Preposition Meaning Example
ad to, toward ad urbem — toward the city
in into, onto (motion) in Italiam — into Italy
per through, by means of per agrōs — through the fields
propter because of, on account of propter timōrem — on account of fear
ante before, in front of ante bellum — before the war
post after, behind post mortem — after death
inter between, among inter mīlitēs — among the soldiers
trans across trans Rhenum — across the Rhine
circum around circum urbem — around the city
contrā against contrā hostēs — against the enemies
ob on account of ob eam rem — for that reason

4.4 Accusative of Extent of Space and Duration of Time

Without a preposition, the accusative can express how far or how long.

Latin Translation
mīlle passūs ambulāvit He walked a thousand paces
trēs diēs mānsit He stayed for three days
octō annōs rēgnāvit He reigned for eight years
Rōmā abest mīlia passuum centum It is 100 miles from Rome

4.5 Accusative of Exclamation

Used to express strong emotion — surprise, grief, indignation — without a verb.

Latin Translation
mē miserum! Wretched me! / Poor me!
ō tempora, ō mōrēs! O the times, O the customs!
ō rēgem ineptum! What a foolish king!

4.6 Two Accusatives with Certain Verbs

Verbs of teaching, asking, concealing take two accusatives: one of the person, one of the thing.

Latin Translation
docet tē grammaticam He is teaching you grammar
Caesarem omnia docuit He taught Caesar everything
rogāvit mē sententiam He asked me my opinion
hoc tē celāvī I kept this hidden from you

With passive transformation, the person becomes the subject (nominative) and the thing remains accusative:

Grammatica ā magistrō doceor — "I am being taught grammar by the teacher."

5. Uses of the Ablative

The ablative is the most versatile case in Latin, having absorbed three proto-Indo-European cases: the true ablative (separation), the instrumental (means/manner), and the locative (place where). It has the most distinct uses.

5.1 Ablative of Separation

Expresses separation, removal, or deprivation from something. Often with verbs of freeing, depriving, lacking — and sometimes with prepositions ab, dē, ex.

Latin Translation
līberātus servitūte freed from slavery
carēre culpā to be free from blame
abstinēre voluptātibus to abstain from pleasures
prohibēre hostēs Italiā to keep the enemies from Italy

5.2 Ablative of Agent

With a passive verb, the person performing the action is expressed by ab/ā + ablative.

Latin Translation
ab hostibus victus est He was conquered by the enemies
ā Caesare laudātus sum I was praised by Caesar
ā cīvibus amātur He is loved by the citizens

Contrast with ablative of means (no preposition, used for things/instruments — see 5.3).

5.3 Ablative of Means / Instrument

The thing by which an action is accomplished — no preposition.

Latin Translation
gladiō necātus est He was killed with/by a sword
oculīs vidēmus We see with our eyes
nāvibus pervēnērunt They arrived by ships
pedibus iter fecit He traveled on foot
saxīs oppugnāvit He attacked with rocks

5.4 Ablative of Manner

Expresses how an action is performed. With an adjective, cum is optional; without an adjective, cum is required.

Latin Translation
magnā cum cūrā scrīpsit He wrote with great care
magnā cūrā scrīpsit He wrote with great care (cum omitted with adj.)
cum gaudiō recēpit He received it with joy
summā virtūte pugnāvit He fought with the greatest courage

Rule: cum + ablative (no adjective) = required. Adjective + ablative (no cum) = allowed. Adjective + cum + ablative = also correct.

5.5 Ablative of Accompaniment

Expresses the person (or group) with whom one acts. Always uses cum.

Latin Translation
cum amīcīs vēnit He came with his friends
cum exercitū profectus est He set out with the army
mēcum ambulāvit He walked with me

Note: cum is appended to pronouns: mēcum, tēcum, nōbīscum, vōbīscum, sēcum.

5.6 Ablative of Cause

Expresses the reason or cause of an action, with no preposition. Often used with mental states.

Latin Translation
amōre mortuus est He died from love
timōre fugit He fled out of fear
lassitūdine procubuit He fell down from exhaustion
gaudiō exsiluit He leaped up with joy

Contrast with propter + accusative (external cause) vs. ablative (internal/emotional cause).

5.7 Ablative of Time When

Expresses the point in time at which something occurs — no preposition needed.

Latin Translation
eō tempore at that time
primā lūce at first light / at dawn
vere in spring
nocte ambulāvit He walked at night
quō diē Caesar occīsus est on the day Caesar was killed

5.8 Ablative of Time Within Which

Expresses the span of time within which something happens or is completed.

Latin Translation
tribus annīs within three years
paucīs diēbus within a few days
ūnā hōrā within one hour
decem annīs Troia capta est Troy was captured within ten years

Distinguish from duration of time (accusative, 4.4) which answers "for how long," while this answers "within what time frame."

5.9 Ablative of Specification / Respect

Specifies in what respect something is true. Also called the ablative of respect or ablative of specification.

Latin Translation
nōmine Mārcus Marcus by name
maior nātū older in birth / elder
minor nātū younger in birth / younger
praestāre virtūte to excel in virtue
claudus alterō pede lame in one foot
diversī opiniōne differing in opinion

5.10 Ablative of Degree of Difference

With comparatives (and words implying comparison), the ablative expresses by how much something differs.

Latin Translation
multō maior much greater (by much greater)
paulō minor a little smaller
nihilō melior no better (better by nothing)
tribus annīs senior three years older
multō fortior quam much braver than

5.11 Ablative Absolute

A noun/pronoun + participle (or noun + noun/adjective), both in the ablative, forming an adverbial phrase independent of the main clause. See Section 7 for full treatment.

5.12 Ablative of Comparison

After a comparative adjective or adverb, the ablative can replace quam + nominative/accusative when the compared noun would be nominative or accusative.

Latin Translation
fortior leōne est He is braver than a lion
nihil amīcitiā dulcius nothing sweeter than friendship
Catō Caesare honestior erat Cato was more honorable than Caesar

Only possible when both items being compared are in the same case. Use quam when the cases would differ.

5.13 Ablative of Source / Origin

Expresses derivation or origin, with or without ab/ā, dē, ex.

Latin Translation
Rōmā ortus born from/of Rome / of Roman origin
ex servō nātus born of a slave
amplissimā familiā nātus born of a most distinguished family
Iove nātus born of Jupiter

5.14 Ablative of Price

Expresses the specific price paid for something (contrast with genitive of value for indefinite amounts).

Latin Translation
parvō pretiō ēmit He bought it at a small price
magnō vēndidit He sold it at a great price
decem talentīs ēmit He bought it for ten talents
quot assibus ēmistī? For how many asses did you buy it?

5.15 Ablative of Description

A noun + adjective in the ablative describing a physical characteristic (whereas genitive of description, 2.4, tends toward abstract or permanent qualities).

Latin Translation
vir magnā virtūte a man of great courage
mīles longā capillō a soldier with long hair
puer summā industriā a boy of the greatest diligence

Both genitive and ablative of description are found — genitive is more common for abstract qualities; ablative for physical appearance.

5.16 Ablative with Deponent Verbs (Utor, Fruor, Fungor, Potior, Vescor)

Five deponent verbs govern the ablative (remember: UFPFV or "a ufor group"):

Verb Meaning Example
ūtor to use gladiō ūtitur — He uses a sword
fruor to enjoy ōtiō fruitur — He enjoys leisure
fungor to perform, discharge officiō fungitur — He performs his duty
potior to take possession of oppidō potitus est — He took possession of the town
vescor to feed on herbā vescuntur — They feed on grass

5.17 Ablative with Prepositions

Common prepositions that take the ablative:

Preposition Meaning Example
ā / ab from, by (agent) ab urbe — from the city
cum with (accompaniment, manner) cum mīlitibus — with the soldiers
dē down from, about, concerning dē monte — down from the mountain
ē / ex out of, from ex Italiā — out of Italy
in in, on (location — no motion) in forō — in the forum
sub under (location) sub terrā — under the ground
sine without sine timōre — without fear
prō on behalf of, in front of prō patriā — for the fatherland
prae in front of, compared with prae metū — because of fear
super above, concerning super flūmine — above the river

Note: in and sub take accusative with motion verbs (in urbem = into the city) but ablative for location (in urbe = in the city).

6. The Locative Case

The locative, a remnant of an older case system, survives only in a few categories. It expresses place where without a preposition.

Where the Locative Is Used

  1. Names of cities and towns (1st and 2nd declension singular: same form as genitive; 3rd declension and all plurals: same form as ablative)
  2. Domus (home)
  3. Rūs (the country, countryside)
  4. Humus (the ground)
Noun Locative Translation
Rōma, -ae Rōmae in Rome
Athēnae, -ārum Athēnīs in Athens
Carthāgō, -inis Carthāgine in Carthage
Londinium, -ī Londinī in London
domus, -ūs domī at home
rūs, rūris rūrī / rure in the country
humus, -ī humī on the ground

Locative vs. Ablative

The locative answers "where?" for these specific nouns only. For all other places, use in + ablative (in Galliā — in Gaul). Motion to these nouns uses the accusative without a preposition (Rōmam = to Rome; domum = home); motion from uses ab/ā (Rōmā = from Rome; domō = from home).

7. Ablative Absolute

The ablative absolute is one of Latin's most characteristic constructions: a self-contained adverbial phrase in the ablative case that modifies the entire main clause rather than any single word in it.

Structure

[Noun/Pronoun (ablative)] + [Participle (ablative) OR Noun/Adjective (ablative)]

The key rule: the noun/pronoun in the ablative absolute must not be the subject or object of the main clause. If the same person appears in both, use a regular participial phrase modifying the subject.

Ablative Absolute (different subjects) Regular Participle (same subject)
hostibus victīs, Caesar discessit Caesar hostēs vincēns discessit
"the enemies having been defeated, Caesar departed" "Caesar, conquering the enemies, departed"

The Five Participial Patterns

Pattern Latin Example Translation
Noun + Perfect Passive Participle hīs rēbus gestīs these things having been done
Noun + Present Active Participle sole oriente the sun rising
Noun + Noun (no Latin present passive of esse) Caesare duce Caesar being leader
Noun + Adjective rē incertā the situation being uncertain
Noun + Future Participle (rare) rēge moritūrō the king being about to die

Translation Methods

The ablative absolute can be translated in several ways depending on context:

Meaning Example Translation Options
Time (when/after) hostibus victīs, discessit when / after the enemies were defeated
Cause (since/because) hīs rēbus cognitīs, fugit since / because these things were known
Condition (if) ducē amissō, pugnāre nōn possunt if the leader is lost, they cannot fight
Concession (although) multīs rogantibus, negāvit although many were asking, he refused
Means (by) hōc factō, pervēnit by doing this, he arrived

Extended Examples

Latin Word-for-Word Natural Translation
hīs rēbus gestīs these things having been accomplished after these things were done
Caesare duce Caesar being leader under Caesar's leadership
sole oriente the sun rising at sunrise
hoste victō the enemy having been defeated since the enemy was defeated
rē pūblicā oppressā the state having been crushed because the state was crushed
mē invītō me being unwilling against my will
Cicerōne cōnsule Cicero being consul when Cicero was consul (in Cicero's consulship)
omnibus parātīs all things having been prepared when everything was ready
signō datō the signal having been given when the signal was given

8. Indirect Statement (Accusativus cum Infinitivo — ACI)

What Introduces ACI

After verbs of saying, thinking, knowing, and perceiving, the reported content uses an accusative subject + infinitive rather than a that-clause.

Common ACI-introducing verbs:

Category Verbs
Saying dīcere, nārrāre, nūntiāre, scrībere, negāre (deny — with positive inf.!)
Thinking/Believing putāre, crēdere, exīstimāre, arbitrārī, cēnsēre
Knowing scīre, nescīre, intellegere, cognōscere, meminisse
Perceiving vidēre, audīre, sentīre, animadvertere
Showing/Declaring ostendere, monstrāre, docēre, affirmāre, negāre

Structure

[Main Verb] + [Accusative Subject] + [Infinitive (tense relative to main verb)]

Tense of the Infinitive

The tense of the infinitive is relative to the tense of the main verb:

Infinitive Tense Relative Time Formation
Present Same time as main verb amāre (act.) / amārī (pass.)
Perfect Before the main verb amāvisse (act.) / amātum esse (pass.)
Future After the main verb amātūrum esse (act.) / fore ut + subj. (pass.)

Full Examples Table

Latin Main Verb Tense Infinitive Translation
dīcō Caesarem venīre present present I say that Caesar is coming
dīcō Caesarem vēnisse present perfect I say that Caesar came / has come
dīcō Caesarem ventūrum esse present future I say that Caesar will come
dīxit Caesarem venīre perfect/impf present He said that Caesar was coming
dīxit Caesarem vēnisse perfect/impf perfect He said that Caesar had come
dīxit Caesarem ventūrum esse perfect/impf future He said that Caesar would come
scīvī tē errāvisse perfect perfect I knew that you had erred
putābant bellum fīnītum esse imperfect perfect They thought the war had ended

Reflexive Pronouns in ACI

Sē (accusative) in indirect statement refers to the subject of the main verb (the one doing the saying/thinking), not to the infinitive's own subject. Eum/eam/eōs refers to someone other than the main verb's subject.

Latin Meaning
Caesar dīxit sē venīre Caesar said that he himself (Caesar) was coming
Caesar dīxit eum venīre Caesar said that he (someone else) was coming
mīlitēs putāvērunt sē vincere The soldiers thought they themselves were winning
mīlitēs putāvērunt eōs vincere The soldiers thought they (others) were winning

Similarly, possessive suus = possessive referring to the main subject; eius/eōrum = referring to others.

9. Conditional Sentences — All Six Types

Latin conditionals divide into three categories based on the speaker's attitude toward the reality of the condition.

Overview Table

# Name Protasis (if-clause) Apodosis (then-clause) Reality
1 Simple / Factual Indicative (any tense) Indicative (any tense) Assumed true
2 Future More Vivid (FMV) Future or Future Perfect Ind. Future Indicative Likely to occur
3 Future Less Vivid (FLV) Present Subjunctive Present Subjunctive Possible but uncertain
4 Present Contrary-to-Fact Imperfect Subjunctive Imperfect Subjunctive Contrary to present reality
5 Past Contrary-to-Fact Pluperfect Subjunctive Pluperfect Subjunctive Contrary to past reality
6 Mixed Pluperf. or Imperf. Subj. Imperf. or Pluperf. Subj. Mixed time reference

Type 1 — Simple / General Truth

The speaker makes no claim about whether the condition is met — simply states what is/was true given the premise.

Latin Translation
Sī id facis, errās If you do this, you are wrong
Sī hoc crēdis, errābis If you believe this, you will be wrong
Sī Caesar vēnit, laetī erimus If Caesar came, we will be happy
Sī id fēcistī, male fēcistī If you did this, you did badly

Any combination of indicative tenses is possible. This type has no technical mood constraint.

Type 2 — Future More Vivid (FMV)

The speaker presents the condition as likely or expected to occur.

Latin Translation
Sī id faciēs, errābis If you do (will do) this, you will err
Sī Caesar vēnerit, eum vidēbimus If Caesar comes (shall have come), we will see him
Sī hoc dīxerit, stultus erit If he says this, he will be a fool

The future perfect in the protasis is very common — it emphasizes the completion of the condition before the apodosis occurs.

Type 3 — Future Less Vivid (FLV) / "Should-Would"

The speaker entertains the condition as possible but uncertain — a mere supposition.

Latin Translation
Sī id faciās, errēs If you should do this, you would err
Sī Caesar veniat, eum videāmus If Caesar should come, we would see him
Sī hoc possim, faciam If I could do this, I would do it

Both clauses use the present subjunctive. English often translates with "should...would" or "were to...would."

Type 4 — Present Contrary-to-Fact (PCTF)

The condition is contrary to present reality — the speaker knows it is not the case.

Latin Translation
Sī id facerēs, errārēs If you were doing this (but you aren't), you would be erring
Sī Caesar adesset, eum vidērēmus If Caesar were here (but he isn't), we would see him
Sī essem dīves, multa darem If I were rich (but I'm not), I would give many things

Both clauses use the imperfect subjunctive. The imperfect subjunctive signals present time in CTF conditions.

Type 5 — Past Contrary-to-Fact (PCTF)

The condition is contrary to past reality — what did not happen.

Latin Translation
Sī id fēcissēs, errāvissēs If you had done this (but you didn't), you would have erred
Sī Caesar vēnisset, eum vīdissēmus If Caesar had come (but he didn't), we would have seen him
Sī fortius pugnāvissent, vīcissent If they had fought more bravely, they would have won

Both clauses use the pluperfect subjunctive. This is the most common CTF type in historical narrative.

Type 6 — Mixed Conditionals

When the time references differ between protasis and apodosis:

Latin Translation
Sī id fēcissēs, nunc errārēs If you had done this (past), you would now be erring (present)
Sī Rōmae nātus essem, Latīnē melius loquerer If I had been born in Rome (past), I would speak Latin better (now)

The mixed type reflects real-world logic: a past action can have present consequences.

Memory Aid

CTF Type Protasis Apodosis
Present CTF Imperfect Subj. Imperfect Subj.
Past CTF Pluperfect Subj. Pluperfect Subj.
Mixed Pluperfect Subj. Imperfect Subj.

10. Subjunctive Clause Types

The subjunctive mood appears in a wide variety of dependent clause structures. Each type has distinctive trigger words and follows sequence of tenses rules (see Section 11).

10.1 Purpose Clauses (ut/nē + Subjunctive)

Answers "for what purpose?" — the goal or intention behind the main action.

Structure: ut (positive) or nē (negative) + subjunctive, following sequence of tenses.

Latin Translation
vēnit ut vidēret He came in order to see / so that he might see
vēnit nē vidērētur He came so that he might not be seen
pugnat ut vincat He fights in order to win
tacuit nē audiret He was silent so as not to hear
Caesar mīlitēs mīsit ut oppidum caperent Caesar sent soldiers to capture the town

Relative purpose clause: a relative pronoun + subjunctive expresses purpose.

Latin Translation
lēgātōs mīsit quī pācem peterent He sent ambassadors to seek peace
locus aptus est quī castra capiat The place is suitable to hold a camp

10.2 Result Clauses (ut/ut nōn + Subjunctive)

Answers "what was the result?" — the actual consequence of the main action. Typically signaled by tam, ita, sīc, adeō, tantus, tālis, tot in the main clause.

Structure: ut (positive result) or ut nōn (negative result) + subjunctive.

Latin Translation
tam fortis erat ut vīncī nōn posset He was so brave that he could not be defeated
adeō territus est ut fugeret He was so terrified that he fled
tantus timor erat ut nēmō resisteret The fear was so great that no one resisted
ita locutus est ut omnēs lacrimārent He spoke in such a way that everyone wept

Key distinction from purpose:

  • Purpose = deliberate goal (not yet achieved at time of main verb)
  • Result = actual consequence (achieved)
  • Negative purpose: nē; Negative result: ut nōn

10.3 Fear Clauses (timeō nē/ut + Subjunctive)

After verbs of fearing (timēre, metuere, verērī), polarity is reversed:

  • nē + subjunctive = fear that something will happen ("that")
  • ut + subjunctive = fear that something won't happen ("that not")
Latin Translation
timeō nē veniat I fear that he is coming / will come
timeō ut veniat I fear that he is not coming / will not come
veritus est nē hostēs pervenirent He feared that the enemies would arrive
metuō ut hoc fieri possit I fear that this cannot happen

Mnemonic: nē after fear verbs = English "that" (the dangerous thing); ut after fear = English "that...not."

10.4 Indirect Questions (Interrogative Word + Subjunctive)

After verbs of asking, knowing, telling, showing, and wondering — embedded questions take the subjunctive.

Structure: Question word (quis, quid, ubi, cur, quando, quomodo, num, utrum...an) + subjunctive, following sequence of tenses.

Latin Translation
rogāvit quis esset He asked who he was
nesciō quid faciās I don't know what you are doing
mīror cūr discesserit I wonder why he left
dīxit ubi esset He told where he was
quaesīvit num vērum esset He asked whether it was true
rogāvit utrum vīrī an fēminae venīrent He asked whether men or women were coming
incertus sum quō eam I am uncertain where I should go

10.5 Cum Clauses

Cum + subjunctive has three main uses in narrative contexts; cum + indicative has purely temporal meaning.

Cum Temporal (Historical)

Used for background narrative ("when" in historical prose). The cum clause sets the circumstances; the main clause provides the foreground action.

Latin Translation
cum Caesar vēnisset, omnēs surrexērunt When Caesar had come, all rose
cum haec dīcerentur, nūntius advēnit While these things were being said, a messenger arrived

Tense usage: imperfect subjunctive for ongoing action; pluperfect subjunctive for completed action.

Cum Causal ("since/because")

Expresses the reason or motive. Often translatable as "since" or "because."

Latin Translation
cum hoc vērum esset, discessimus Since this was true, we left
cum id scīret, tacuit Because he knew this, he was silent

Cum Concessive ("although")

Marked by tamen (nevertheless) in the apodosis. Expresses a surprising contrast.

Latin Translation
cum hoc vērum esset, tamen discessit Although this was true, he nevertheless left
cum hostēs vinceret, tamen laetus nōn erat Although he was defeating the enemies, he was not happy

Cum with Indicative (Simple Time)

With the indicative, cum = pure temporal "when" or "whenever."

Latin Translation
cum Rōmae erat, cotīdiē lēgēbat Whenever he was in Rome, he read daily
cum id audīvit, risit When he heard this, he laughed

10.6 Indirect Commands (ut/nē + Subjunctive)

After verbs of ordering, asking, urging, persuading, and warning — the content of the command is expressed with ut (positive) or nē (negative) + subjunctive.

Common introducing verbs: imperāre, rogāre, ōrāre, hortārī, monēre, persuādēre, petere, postulāre, suādēre, obtestārī

Latin Translation
imperāvit ut discēderent He ordered that they depart / He ordered them to depart
ōrāvit nē dīceret He begged that he not speak
hortātus est ut fortiter pugnārent He urged them to fight bravely
persuāsit mihi ut manērem He persuaded me to stay
monuit nē id faceret He warned him not to do it
petīvit ut sibi parcerētur He asked to be spared

Contrast with iubēre (command) + infinitive: iussit eōs discēdere (he ordered them to depart) — iubēre takes the infinitive, not ut + subjunctive.

10.7 Relative Clauses of Characteristic

When the antecedent is indefinite, general, negative, or suppressed, the relative clause takes the subjunctive to characterize what kind of thing the antecedent is.

Latin Translation
nēmō est quī hoc nesciat There is no one who does not know this
sunt quī putent There are those who think (such people as would think)
quis est quī hoc velit? Who is there who would want this?
is est quī semper mentiātur He is the sort of man who always lies
nihil est quod timeam There is nothing that I need fear

Signal: antecedent is often nēmō, nūllus, is, ūnus, sōlus, or the pronoun is omitted.

10.8 Relative Clauses of Purpose

A relative clause with the subjunctive can express purpose (especially after verbs of sending, choosing, giving).

Latin Translation
lēgātōs mīsit quī pācem peterent He sent ambassadors to seek peace
ducem ēlegit quī exercitum regeret He chose a leader to command the army
locum dēlēgit quō exercitum addūceret He chose a place to which he could lead the army

10.9 Proviso Clauses (dum, dummodo, modo + Subjunctive)

Express a condition or proviso — "provided that, as long as."

Latin Translation
dum modo nē adsīs provided only that you are not here
oderint dum metuant Let them hate, provided they fear (Caligula, attr.)
dummodo salvus sis as long as you are safe
modo nē hoc faciant provided they don't do this

Negative: dummodo nē / modo nē (not dummodo nōn).

11. Sequence of Tenses

Sequence of tenses governs which subjunctive tense appears in a dependent clause, based on the tense of the main verb.

The Two Sequences

Main Verb Tense Sequence Name
Present Indicative Primary Primary
Future Indicative Primary Primary
Future Perfect Indicative Primary Primary
Perfect Indicative (with present force) Primary Primary
Imperfect Indicative Secondary (Historic) Secondary
Perfect Indicative (simple past) Secondary (Historic) Secondary
Pluperfect Indicative Secondary (Historic) Secondary

Subjunctive Tenses in Dependent Clauses

Sequence Ongoing / Contemporaneous Action Prior Action (completed before main verb)
Primary Present Subjunctive Perfect Subjunctive
Secondary Imperfect Subjunctive Pluperfect Subjunctive

Full Sequence of Tenses Table

Main Verb (Indicative) Depdt. Clause: Same Time Depdt. Clause: Prior Time
rogō (I ask) — PRIMARY quid faciās (what you are doing) quid fēceris (what you did/have done)
rogābō (I will ask) — PRIMARY quid faciās quid fēceris
rogāvī (I have asked, with present result) — PRIMARY quid faciās quid fēceris
rogābam (I was asking) — SECONDARY quid facerēs (what you were doing) quid fēcissēs (what you had done)
rogāvī (I asked, simple past) — SECONDARY quid facerēs quid fēcissēs
rogāveram (I had asked) — SECONDARY quid facerēs quid fēcissēs

The Ambiguous Perfect

The Latin perfect indicative (rogāvī) can be either:

  • Primary when it means "I have asked" (perfect with present result — the asking is relevant now)
  • Secondary when it means "I asked" (simple narrative past)

Context and authorial style determine which sequence follows.

Worked Examples

Primary sequence (present main verb → present/perfect subjunctive in purpose clause):

Latin Translation
venit ut videat He comes in order to see
venit ut vīderit He comes so that he may have seen (by a certain point)
rogō quid faciās I ask what you are doing
rogō quid fēceris I ask what you did

Secondary sequence (imperfect main verb → imperfect/pluperfect subjunctive):

Latin Translation
vēnit ut vidēret He came in order to see
rogāvit quid faceret He asked what he was doing
rogāvit quid fēcisset He asked what he had done
tam perterritus erat ut fugeret He was so terrified that he fled

Exception: Historical Infinitive

Verbs in the historical infinitive (used for vivid narrative) are treated as imperfect and trigger secondary sequence.

Vivid / Instantaneous Perfect

In primary sequence contexts, an author may occasionally use a perfect subjunctive where imperfect might be expected, for vividness. This is especially common in Cicero.

12. Quick-Reference: Case Selection Guide

When multiple cases might seem possible, use this decision guide:

Situation Case
Agent of passive verb (person) Ablative with ab
Agent of passive periphrastic (must-do) Dative
Price (specific) Ablative
Price (indefinite/value judgment) Genitive
Time (when) Ablative
Time (how long) Accusative
Time (within which) Ablative
Place where (general) in + Ablative
Place where (city/domus/rus) Locative
Place to (motion, general) in/ad + Accusative
Place to (city/domus/rus) Accusative (no preposition)
Place from (general) ex/ab + Ablative
Place from (city/domus/rus) Ablative (no preposition)
Means/instrument (thing) Ablative (no preposition)
Accompaniment (person) cum + Ablative
Description (permanent/abstract) Genitive
Description (physical) Ablative
Comparison after comparative Ablative OR quam + same case
Degree of difference Ablative

Reference