On Logic
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Latin Grammar: Infinitives
Ad quaestionem dici potest quod iste liber non est de decem vocibus ut de primo subiecto nec aliqua pars logicae est de voce, quia omnes passiones syllogismi et omnium partium eius possunt sibi inesse secundum esse quod habent in mente etsi non proferantur, ut patet inductive , sed est de aliquo priore, quod respectu vocis significativae tantum habet rationem significati.
Infinitives
It is important to be able recognize all forms of the infinitive in Latin. You'll easily recognize the present active infinitive (to do) as the second principle part, but there are five other forms of the infinitive for most verbs.
- present passive infinitive (to be done): characterized by the end -i
- perfect active infinitive (to have done): adds -isse to the perfect stem
- perfect passive participle (to have been done): combines the perfect passive participle (the fourth principle part) with the infinitive esse (to be)
- future active infinitive (to be about to do): combines the future active participle with esse
- future passive infinitive (to be about to be done): very rare; combines the supine ending in -um with the infinitive iri (present passive infinitive of eo, to go)
Review the forms of infinitives by completing the following chart (assume neuter single nominative for participles).
Active
| Present | parare | monere | dormire | facere | |
| Perfect | |||||
| Future |
Passive
| Present | |||||
| Perfect | |||||
| Future |