Questions & Answers about Η οικογένεια είναι πλούσια.
Η means the.
In this sentence, it is the feminine singular definite article, because οικογένεια (family) is a feminine singular noun.
So:
- η = the for feminine singular nouns
- οικογένεια = family
Together: η οικογένεια = the family
In Greek, grammatical gender is not the same thing as natural sex.
A noun can be:
- masculine
- feminine
- neuter
and that is just part of how the noun behaves grammatically.
Οικογένεια is a feminine noun, so words that go with it, like the article and adjective, must match that gender:
- η οικογένεια
- πλούσια οικογένεια
- η οικογένεια είναι πλούσια
English speakers often need time to get used to this, because English usually does not assign grammatical gender to nouns like family.