Remarks on the Conjugation of Regular Verbs.
§ 76. Any Latin Verb (except a very few irregular Verbs, see §§ 81ff.) may be conjugated according to the preceding models, provided we know:
(1) The Pres. Infin., showing to what Conjugation the Verb belongs;
(2) The Pres. Ind. (1 Pers. Sing.), by which we know the Pres. Subj., the Fut. and Imperf. Ind. and Subj., the Pres. Participle, the Gerund, the Gerundive;
(3) The Perf. Ind. (1 Pers. Sing.), by which we know the Perf. Subj., the Plup. Ind. and Subj., the Fut. Perf., the Perf. Inf.;
(4) The Supine (Acc.), by which we know the Perf. Participle, and so the Compound tense of the Passive, the Abl. Supine, the Fut. Participle.
These are therefore called the Principal Parts of a Verb. A list will be given in the Second Part (§§ 287 sqq.) of the Principal Parts of all Verbs of the Third Conjugation, and of all those of the other Conjugations which vary from the model of ămāre, mŏnēre, audīre.
§ 77. First Conjugation.—The Perf. sometimes has -ŭī instead of -āvī, and the Supine -ĭtum instead of -ātum; as—
| cŭbō | cŭbŭī | cŭbĭtum | cŭbāre | lie |
§ 78. Second and Third Conjugations.—The Perf. is formed from the base of the Verb in five different ways, viz.:
I. By adding -ŭī or -ēvī (2nd Conj.), or -īvī (3rd Conj.).
II. By adding -sī.
x is written for gs, cs, and when the Base ends with two consonants one is dropped when -sī is added.
III. By Reduplication: i.e., by prefixing the first consonant of the Base together with a short vowel.
