The verb είμαι (I am), like most verbs in the Greek language, is
(unlike other languages) used with no personal pronoun preceding it.
The subject (I,you,he,etc.) is denoted by the (so-called) person
(πρόσωπο) in which the verb appears. Thus
There is a complete table of all the conjugation forms of the verb "to
be" in the auxiliary verbs section.
The personal pronouns εγώ (I), εσύ
(you, sing.), εμείς (we), εσείς (you, plur.), are used only when we
want to emphasize the subject. For example,
- Q : Ποιος είναι ο Άγγελος; (Who is Angelos?)
- A : Εγώ είμαι ο Άγγελος. (I am Angelos.)