[*] 411. Opus and ūsus , signifying need, take the Ablative:—1
- magistrātibus opus est (Leg. 3.5), there is need of magistrates.
- “nunc vīribus ūsus ” (Aen. 8.441) , now there is need of strength.
- opus est tuā exprōmptā malitiā atque astūtiā; (Ter. And. 723), I must have your best cunning and cleverness set to work.
- properātō opus erat (cf. Mil. 49), there was need of haste.
- “ dux nōbīs et auctor opus est ” (Fam. 2.6.4) , we need a chief and responsible adviser (a chief, etc., is necessary for us).
- “sī quid ipsī opus esset ” (B. G. 1.34) , if he himself wanted anything (if anything should be necessary for him).
- “ quae opus sunt ” (Cato R. R. 14.3) , things which are required.