The Accusative of the Gerund and Gerundive is used after the preposition ad , to denote Purpose (cf. § 533 ):— mē vocās ad scrībendum (Or. 34) , you summon me to write. vīvis nōn ad dēpōnendam sed ad cōnfīrmandam audāciam (Cat. 1.4) , you live not to put off but to confirm your daring. nactus aditūs ad ea cōnanda (B. C. 1.31) , having found means to undertake these things. Other prepositions appear in this construction; inter and ob a few times, circā , in , ante , and a few others very rarely: as, inter agendum , while driving. The Accusative of the gerund with a preposition never takes a direct object in classic Latin.