Learn Hardcore Greek: Η φίλη μου διαβάζει εφημερίδα το πρωί. - My female friend reads a newspaper in the morning.

Greek often omits the indefinite article when the direct object is a nonspecific, countable thing. So διαβάζει εφημερίδα naturally means “(she) reads a newspaper.” You can add the feminine indefinite article μια (or μία) and say διαβάζει μια εφημερίδα without changing the meaning much. Using stressed μία can emphasize “one (single) newspaper,” while unstressed μια is the regular “a.”

Why do we say το πρωί without a preposition? In English we say “in the morning.”

Time-of-day expressions in Greek commonly use the definite article with no preposition: το πρωί (in the morning), το μεσημέρι (at noon), το απόγευμα (in the afternoon), το βράδυ (in the evening/at night), and also τη νύχτα (at night). The article makes the phrase adverbial; you don’t need “in/at.”

What does the initial Η in Η φίλη μου tell me?

Η is the feminine nominative singular article “the.” It tells you φίλη (“friend”) is feminine and is the subject here. Contrast:

Feminine: η φίλη (the female friend)
Masculine: ο φίλος (the male friend)
Neuter: το φίλο (neuter forms exist but not for “friend” in this meaning)

How does μου work, and why does it come after the noun?