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Koine Greek/Overview of Particles
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Greek uses various particles (indeclinable parts of speech, including adverbs, prepositions, conjunctions, and interjections) to clarify relationships between ideas. Most ordinary conjunctions have English equivalents, but some common particles lack precise English equivalents. We express their meaning through stress, pauses, tones, and word order. Observing these particles in reading, especially aloud, helps understand their force. The following sections briefly describe the distinct meanings of the most important particles, though the descriptions are not exact. Particles that can’t begin a clause are postpositive and marked with an asterisk, as *ἄν.
The Indefinite Particle ἄν
*Ἄν marks a verb's action as uncertain (i.e., contingent on circumstances not yet realized, or itself merely supposed).
The first use is seen in the hypothetical indicative and optative; in the second use, ἄν may stand with most classes of subordinate subjunctives. ἄν is not used with subordinate μή clauses nor with quoted dubitative subjunctives, because it was not used with the simple subjunctive sentences from which these subordinate clauses arose; it nearly dropped out of purpose clauses, though ὅπως and ὡς clauses often retain it.
Rarely, ἄν stands with a future indicative to mark it as contingent, or with a future participle representing such an indicative.
Particles of Emphasis
The enclitic *γε emphasises the preceding word by restriction. At least has a like force, but is usually too strong; a slight stress of voice is sometimes the only translation possible. *γοῦν (γε and οὖν) is a stronger at least, at any rate.
Ἆρά γε γινώσκεις ἃ ἀναγινώσκεις; — Do you really know what you are reading? (Acts 8:30)
Particles of Negation
Affirmation and negation are ways in which grammar encodes positive and negative polarity into clauses. An affirmative form is used to express the validity of an assertion, while a negative form expresses its falsity.
In Ancient Greek, οὐ, or its compound, simply denies. Μή, or its compound, presents the negation as willed, or as part of an imagined or assumed case. Hence, μή is the regular negative in wishes and in subjunctive and imperative sentences.
After οὐ, alone or in composition, a compound of οὐ strengthens the negation; in older English a similar doubling of the negative was common: "I will not budge for no man’s pleasure, I." (Shakespeare, Romeo and Juliet From the Folger Shakespeare 3.1.56). So also a compound of μή following μή.
Οὔποτε ἐρεῖ οὐδείς (Xen. Anabasis 1.3.5).
If the second negative is simple, each has its separate force: "Καὶ οὐ γράφει μὲν ταῦτα τοῖς δʼ ἔργοις οὐ ποιεῖ" (Demosthenes 9.27). Οὐ μή with the subjunctive is a strong denial referring to the future.
Alternative Forms of οὐ
οὐκ — before vowel with smooth breathing
οὐχ — before vowel with rough breathing
οὔ — pausal form
οὐχῐ́ — (intensive) Attic, Epic, Ionic