r sagitta vulneratus est, _Alexander was wounded by an arrow_.

There are the following special varieties of this Ablative:--

1. Utor, fruor, fungor, potior, vescor, and their compounds take the
Ablative; as,--

divitiis utitur, _he uses his wealth_ (lit. _he benefits himself by his
wealth_);

vita fruitur, _he enjoys life_ (lit. _he enjoys himself by life_);

munere fungor, _I perform my duty_ (lit. _I busy myself with duty_);

carne vescuntur, _they eat flesh_ (lit. _feed themselves by means of_);

castris potitus est, _he got possession of the camp_ (lit. _made
himself powerful by the camp_).

a.. Potior sometimes governs the Genitive. See Sec. 212, 2.

2. With opus est (rarely usus est), _there is need_; as,--

duce nobis opus est, _we need a leader_.

a. A Neuter Pronoun or Adjective often stands as subject with opus as
predicate. Thus:--

hoc mihi opus est, _this is necessary for me_.

b. An ordinary substantive rarely stands as subject. Thus dux nobis opus
est is a rare form of expression.

c. Note the occasional use of a perfect passive participle with opus est;
as,--

opus est properato, _there is need of haste_.

3. With nitor, innixus, and fretus; as,--

nititur hasta, _he rests on a spear_ (lit. _supports himself by a
spear_);

fretus virtute, _relying on virtue_ (lit. _supported by virtue_).

4. With contineri, consistere, constare, _consist of_; as,--

nervis et ossibus continentur, _they consist of sinews and bones_ (lit.
_they are held together by sinews and bones_);

mortali consistit corpore mundus, _the world consists of mortal
substance_ (lit. _holds together by means of_, etc.).

6. In expressions of the following type:--

quid hoc homine facias, _what can you do with this man?_

quid mea Tulliola fiet, _what will become of my dear Tullia?_ (lit.
_what will be done with my dear Tullia?_)

7. In the following special phrases at variance with the ordinary English
idiom:--

proelio contendere, vincere, _to contend_, _conquer in battle_;

proelio lacessere, _to provoke to battle_;

curru vehi, _to ride in a chariot_;

pedibus ire, _to go on foot_;

castris se tenere, _to keep in camp_.

8. With Verbs of _filling_ and Adjectives of _plenty_; as,--

fossas virgultis complerunt, _they filled the trenches with brush_.

a. But plenus more commonly ta