Monographs

The interrogative pronouns are used substantively τίς; who? or adjectively τίς ἀνήρ; what man?

The interrogatives (pronouns and adverbs, 340, ^cross346) are used in direct and in indirect questions. In indirect questions

the indefinite relatives ὅστις, etc., are generally used instead of the interrogatives.

τί βούλεται ἡμῖν χρῆσθαι; for what purpose does he desire to employ us? X. A. 1.3.18, οὐκ οἶδα ὅ τι ἄν τις χρήσαιτο αὐτοῖς I do not know for what service any one could employ them 3. 1. 40, A. πηνίκ' ἐστὶν ἄρα τῆς ἡμέρας; B. ὁπηνίκα; A. What's the time of day? B. (You ask), what time of day it is? Ar. Av. 1499.

N.—For peculiarities of Interrogative Sentences, see ^cross2666, ^cross2668.

τί is used for τίνα as the predicate of a neuter plural subject when the general result is sought and the subject is considered as a unit: ταῦτα δὲ τί ἐστιν; but these things, what are they? Aes. 3.167. τίνα emphasizes the details: τίν' οὖν ἐστι ταῦτα; D. 18.246.

τίς asks a question concerning the class, τί concerning the nature of a thing: εἰπὲ τίς ἡ τέχνη say of what sort the art is P. G. 449a, τί σωφροσύνη, τί πολι_τικός; what is temperance, what is a statesman? X. M. 1.1.16, φθόνον δὲ σκοπῶν ὅ τι εἴη considering what envy is (quid sit invidia) X. M. 3.9.8.