One case, a dozen different jobs — identify which specific use of the ablative the quoted phrase represents, then translate the sentence. 15 sentences, answer key at the bottom.
Common Ablative Uses
Means / Instrument
no preposition
Answers "by what means" — gladiis pugnabant, "they fought with swords."
Ablative Absolute
noun + participle, grammatically separate from the main clause
Urbe capta, "the city having been captured" — sets the scene for the main action.
Agent
a / ab + ablative, with a passive verb, for a person
a Romulo, "by Romulus" — only for a person doing the action, not a tool.
Comparison
no preposition, after a comparative adjective
Caesare fortior, "braver than Caesar" — the ablative itself means "than."
Name: _______________________
Date: _______________________
AP Latin — The Many Uses of the Ablative
15 Sentences
1. Milites "gladiis" pugnabant.
2. Caesar cum "virtute" pugnavit.
3. Milites "in castris" manebant.
4. "Prima luce" Caesar profectus est.
5. "Urbe capta", cives fugerunt.
6. Roma "a Romulo" condita est.
7. Hostes "finibus suis" pulsi sunt.
8. Caesar "cum legionibus" venit.
9. Nemo "Caesare" fortior erat.
10. "Timore commoti", milites fugerunt.
11. "Nomine", non re, amicus erat.
13. "Genere nobili" natus est.
14. "Via Appia" Romam venerunt.
15. Milites "gladiis" utebantur.
The exam almost never asks you to just name the ablative use in isolation — it asks you to translate the sentence correctly, and getting the use wrong usually produces a wrong translation (mixing up means and agent is the classic trap: "a Romulo" needs "by," but so does a plain instrumental ablative like "gladiis," even though only one of them takes the preposition "a/ab").
Want the full AP Latin course?
The full Apidea course includes every AP Latin unit's vocabulary, FRQ practice, and quizzes, plus progress tracking and more activities beyond what's free here.