Chapter+5

An infinitive is an indeclinable verbal noun. Its form is not limited by person and number, though it is limited by tense and voice. The second principle part of every verb is the infinitive form, translated to ..... :
 * Infinitives ** 

Present Active Infinitives:
1st Conjugation **vocare** = to call 2nd Conjugation **monere** = to warn 3rd Conjugation **regere** = to rule 4th Conjugation **audire** = to hear

1. Complimentary Infinitive: When the infinitive is used to complete the meaning of the verb. The infinitive often precedes the verb in the sentence. –  //**Sextus descendere**// //**timet**//. Sextus is afraid //to come down//.

The complimentary infinitive my have an object, direct or indirect. –

**//Auxilium dare debemus//**. We ought //to give help//.

A predicate adjective after a complimentary infinitive agrees with the subject of the main verb. –

**//Pueri//** **//industrii//****//esse debent// .** Boys ought to be //industrious//**.**

2. Infinitives as the subject of **//Est//** and with Impersonal Verbal Phrase (Subjective Infinitive):

The infinitive may be used as the subject of //**est**// or of impersonal verbs, which have no person or thing as the subject. –

It is pleasant to walk. (To walk is pleasant.) **//Ambulare est gratum//**. It is necessary to walk. (To walk is necessary.) **//Necesse est ambulare//**.