Questions & Answers about Το διάφραγμα είναι ανοιχτό.
Το is the definite article, equivalent to the in English.
In Το διάφραγμα είναι ανοιχτό, it is neuter singular nominative because διάφραγμα is a neuter singular noun and it is the subject of the sentence.
In Greek, every noun has a grammatical gender: masculine, feminine, or neuter.
Διάφραγμα is simply a neuter noun, and you have to learn that as part of the word.
Its ending helps too: many Greek neuter nouns end in -μα, for example:
- το γράμμα
- το όνομα
- το πρόβλημα
- το διάφραγμα
So when you see -μα, it is often a clue that the noun is neuter.
Είναι is the 3rd person singular form of είμαι, meaning is.
So the structure is:
- Το διάφραγμα = the subject
- είναι = is
- ανοιχτό = open
A few useful forms of είμαι are:
- είμαι = I am
- είσαι = you are
- είναι = he/she/it is