Allen and Greenough's New Latin Grammar for Schools and Colleges
J. B. Greenough, G. L. Kittredge, A. A. Howard, Benj. L. D'Ooge, Ed.

1. “ Tiberīne pater, tē, sāncte, precor ” (Liv. 2.10) , O father Tiber, thee, holy one, I pray.
2. “rēs omnis mihi tēcum erit, Hortēnsī ” (Verr. 1.33) , my whole attention will be devoted to you, Hortensius.

[*] a. A noun in the nominative in apposition with the subject of the imperative mood is sometimes used instead of the vocative:—

1. “audī tū, populus Albānus ” (Liv. 1.24) , hear, thou people of Alba.

[*] b. The vocative of an adjective is sometimes used in poetry instead of the nominative, where the verb is in the second person:—

1. “quō moritūre ruis ” (Aen. 10.811) , whither art thou rushing to thy doom?
2. “cēnsōrem trabeāte salūtās ” (Pers. 3.29) , robed you salute the censor.

[*] c. The vocative macte is used as a predicate in the phrase macte estō ( virtūte ), success attend your (valor):—

1. “iubērem tē macte virtūte esse ” (Liv. 2.12) , I should bid you go on and prosper in your valor.
2. “ macte novā virtūte puer ” (Aen. 9.641) , success attend your valor, boy!

[*] Note.--As the original quantity of the final e in macte is not determinable, it may be that the word was an adverb, as in bene est and the like.