Purpose Clauses (Final)
A purpose clause tells you WHY the main action happened — "in order that…". Latin's standard recipe is ut (or negative nē) plus a subjunctive verb: vēnī ut tē vidērem — "I came so that I might see you."
The form is short and the trap is sharp. The same word ut introduces a result clause ("so X that Y"), and only context tells them apart — except for the negative, which is the giveaway: purpose negates with nē, result with ut nōn.
Tense follows the sequence rule (present/perfect main verb → present subjunctive; past main verb → imperfect subjunctive).
And purpose has more than one disguise: a relative pronoun (mīsit lēgātōs quī dīcerent), the comparative connector quō, gerunds with ad or causā, even the supine in -um after verbs of motion.
Learnings0 core · 1 AP claim
AP framework claims (1)— verbatim from AP CED
"in order that / so that X may happen" — the purpose of the main verb
Tense follows the sequence of tenses: primary main verb → present subj.; secondary main verb → imperfect subj. Pluperfect/perfect subj. are NOT used in pure purpose clauses.
See It In Action
— Cic. Fin. ii. 12
Classic ut + subjunctive purpose. Main verb abdūxērunt is perfect (secondary), so the subjunctive is imperfect (esset) — never present, no matter how "present" the purpose feels.
— B. C. i. 27
Negative purpose: nē + subjunctive. If this were a result clause ("so that the soldiers did NOT break in"), Latin would write ut … nōn inrumperent. The negative word is the diagnostic.
— B. C. ii. 26
Relative clause of purpose. After verbs of sending/choosing, quī + subjunctive does the work of ut eī — translate with an English infinitive: "to withstand," not "who withstand."
— Cic. Fam. xv. 4. 10
The comparative facilius forces the swap from ut to quō. Read quō literally as "by which the more" — that's why Latin reaches for it whenever a comparative shows up inside a purpose clause.
Both clauses use ut + subjunctive. The negative gives them away — purpose negates with nē, result with ut nōn.
WHY the main action happened — the goal
portās obstruit, nē mīlitēs inrumperent
he barred the gates, so that the soldiers might NOT break in
WHAT FOLLOWED from the main action — the outcome
tantās aedificat turrēs, ut mīlitēs nōn inrumpere possent
he built towers so large THAT the soldiers could not break in
Tip: Look at the negative first: nē = purpose, ut nōn = result. If no negative, scan the main clause for tantus / tālis / sīc / ita / adeō — those signal result; their absence usually signals purpose.
In mīlitēs mīsit ut eōs quī fūgerant persequerentur (B. G. v. 10), why is persequerentur in the imperfect subjunctive and not the present?
Study Tips
- •When you see ut + subjunctive, ask first: does the main clause have an idea like tantus, sīc, ita, adeō nearby? If yes, lean result. If not, lean purpose.
- •The negative is the cleanest tell. Nē + subjunctive = purpose ("so that…not"). Ut nōn + subjunctive = result ("so X that…not").
- •If you see a relative pronoun (quī, quae, quod) followed by a subjunctive after a verb of sending, choosing, or appointing, translate as purpose: "to do X."
- •Memorize the quō signal: when a comparative is in the purpose clause (facilius, melius), Latin swaps ut for quō. Quō facilius = "so that more easily."
- •After verbs of motion, watch for the supine in -um (īt vīsum — "he went to see"). It's an old, idiomatic alternative to ut + subjunctive.