2. Present Active and Passive Infinitives
Active
2nd principal part
Latin English
parare to prepare
monēre to warn
regere to rule
capere to capture
audire to hear
esse to be
Passive
2nd part ending in ‘-i’
Latin English
parari to be prepared
moneri to be warned
regi to be ruled
capi to be captured
audiri to be heard
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3. Perfect Active and Passive Infinitives
Active
3rd principal part, minus ‘-i’, plus ‘-isse’
Latin English
parauisse to have prepared
monuisse to have warned
rexisse to have ruled
cepisse to have captured
audiuisse to have heard
fuisse to have been
Passive
4th part* plus ‘esse’
Latin English
paratus esse to have been prepared
monuisse to have been warned
rectus esse to have been ruled
captus esse to have been captured
auditus esse to have been heard
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* NB: The 4th part is still part adjective and agrees with the subject in case, number, and gender
4. Future Active and Passive Infinitives
Active
Future Participle plus ‘esse’
Latin English
paraturus esse to be about to prepare
moniturus esse to be about to warn
recturus esse to be about to rule
capturus esse to be about to capture
auditurus esse to be about to hear
futurus esse / fore to be about to be
Passive
Not common – will be taught later
Latin English
* NB: The 4th part is still part adjective and agrees with the subject in case, number, and gender
