N이에요. N예요.

1. It is a predicate that is used to ask and answer a subject's condition or attribute in informal Situation and used after nouns.

2. You can combine '이에요.' with a noun that has 'Batchim'.
 1) 저는 지영이에요. ( I am Ji-young.)
 2) 지영은 한국 사람이에요. (Ji-young is Korean.)
 3) 규연은 군인이에요. (Gyu-yeon is a soldier.)

3. You can combine '예요.' with a noun that has not 'Batchim'.
 1) 저는 중기예요. ( I'm Joong-gi.)
 2) 시진은 기자예요. (Shi-jin is a reporter.)

4. The form of a declarative sentence and an interrogative sentence is the same.
If you raise the end of the sentence, it becomes an interrogative sentence and if you lower the end of the sentence, it becomes a declarative statement.
 1) 명주는 학생이에요.  ( Myung-Joo is a student.)
 2) 명주는 학생이에요? ( Is Myung-joo a student?)