PREPOSITIONS
Like Latin, the Greek language also has prepositions that take certain cases after it.
ACCUSATIVE CASE:
Verbs that indicate motion toward take the accusative case, just like Latin.
ἀνά = up
πρός = towards
εἰς = into, to
Here are some other prepositions which take the accusative case.
μέτα = after
διά = on account of, because of
επί = against, onto, on, at
κατά = according to, by, down, along
παρά = contrary to, along, to
περί = round around
GENITIVE CASE:
These verbs, indicating motion away from something, take the genitive case.
ἀπο = (away) from
ἐκ = out of (ἐξ if the next word begins with a vowel)
κατά = down (from)
παρά = from (a person)
Here are some other prepositions which take the genitive case.
ἂνευ = without
μέτα = with
δία = through
περι = about, concerning
πλήν = except
πρό = before, in front of
ὑπέρ = on behalf of
ὑπό = by (a person)
DATIVE CASE:
The following takes the dative case:
ἐν = in
Some prepositions can take multiple cases! Look at the case which follows to determine the meaning.
Remember these prepositional phrases:
κατά γήν = by land
δι´ ὀλίγου = soon (literally ‘through/after a little [time]’)
COMPOUND VERBS:
Some prepositions are placed at the start of verbs to form a compound verb. It is important to look out for this as often you are expected to recognise the original verb and the added preposition rather than the verb already with a preposition.
Here are some common prefixes:
ἀνα- = up
ἀπο- = from, away
δια- = through
εἰσ- = into
ἐκ- = out of, out
ἐν- = in
κατα- = down
περι- = around
προσ- = to, towards
As you can see, they look just like stand-alone prepositions and have the same meanings.
E.g. ἐκβαίνω = ἐκ (out of) + βαίνω (I go) = I go out of
IMPORTANT - if the tense of the verb requires an augment, this comes after the prepositional prefix (E.g. ἀπέβαλον)
The augment usually displaces the vowel, but sometimes it can come after (E.g. περιέβαλον)
IMPORTANT - Due to pronunciation, ἐν + βαίνω = ἐμβαίνω. But in the Aorist, no change is needed because of the augment - ἐνέβην
Often a sentence may contain a preposition and a prepositional prefix - this is simply for emphasis!
E.g. εἰσβαίνω εἰς τὴν ἀγοράν.
There are two important compounds of βάλλω to learn:
εἰσβαλλω = ‘I throw into’ BUT also ‘I invade’ (usually with another εἰς + accusative afterward)
προσβάλλω = ‘I throw towards’ BUT also ‘I attack (followed by the dative)
AGENT AND INSTRUMENT:
With passive verbs, the subject is the one having the action done to them.
The agent is the person who does the action.
E.g. The city is being guarded by the army. (The city is the subject; the army is the agent.)
The agent is usually expressed with ὑπό + genitive' in Greek.
E.g. ἡ πόλις ὑπό τῶν στρατιῶν φυλάσσεται
The instrument is the thing with which the action is done - e.g. ‘with a sword’
This is expressed with the dative case - NOT with a preposition.
E.g. ἡ πόλις τοῖς ὃπλοις φυλάσσεται = The city is being guarded with the weapons.
REMEMBER - Not every passive verb will have an agent or instrument!