John 6:16

Ὡς δὲ ὀψία ἐγένετο, κατέβησαν οἱ μαθηταὶ αὐτοῦ ἐπὶ τὴν θάλασσαν,

Rough Word-by-word:
As and evening it became, they went down the disciple of him on the sea,

Smooth Translation:
And as it became evening, his disciples went down on the sea,

Ὡς adverb "as"

δὲ post positive conjunction "and"

ὀψία noun nominative singular feminine "evening"

ἐγένετο verb aorist middle indicative 3rd singular from γίνομαι (I become) "[she] it became"

κατέβησαν verb aorist active indicative 3rd plural from καταβαίνω (I go down) "they went down"

οἱ definite article nominative plural masculine "the"

μαθηταὶ noun nominative plural masculine "disciples"

αὐτοῦ pronoun genitive singular masculine "of him"

ἐπὶ preposition with accusative "on"

τὴν definite article accusative singular feminine "the"

θάλασσαν noun accusative singular feminine "sea"