In questions, γάρ asks for confirmation of a preceding statement, or expresses assent or dissent; asks whether an act before mentioned was not reasonable; asks a question prompted by some form of emotion; and serves to indicate transition, etc.
a. In questions γάρ often marks surprise or indignation, and may frequently be translated by what, why, then, really, surely. Thus, ταυτῑ̀ λέγεις σὺ στρατηγὸν πτωχὸς ὤν; ἐγὼ γάρ εἰμι πτωχός; do you, beggar that you are, address your general thus? what! I a beggar? Ar. Ach. 593, ἦ ζῇ γὰρ ᾱ̔νήρ; is the man really alive? S. El. 1221, οἴει γάρ σοι μαχεῖσθαι . . . τὸν ἀδελφόν; do you really think that your brother is going to fight? X. A. <*> 7. 9. So τίς γάρ; who then, why who?
b. Brief interrogative for<*>ulae asking for confirmation of a preceding statement are:
τί γάρ; what then, how when, how else? τί γάρ also serves as a formula of transition (now, well then, now what . . ., furthermore).
ἦ γάρ; is it not so? surely this is so? (cp. n'est ce pas). Often of surprise.
οὐ γάρ; is it not so? often in indignant questions; when not standing alone, why not?
<*>ῶς γάρ; πόθεν γάρ; imply that something is impossible (often of surprise). Cp. πῶς γὰρ οὔ; in negative rhetorical questions.