How you can express "to be" in Korean?
I have read that there are a lot of expressions how to say "to be".
It would be nice if you could give me some examples.

Some sentences:

I am German.
You are a good person.
It is a book.
My dad is tired.

Generally I would like to know any variation of "to be" which are used in common speech.

Question

How you can express "to be" in Korean?
I have read that there are a lot of expressions how to say "to be".
It would be nice if you could give me some examples.

Some sentences:

I am German.
You are a good person.
It is a book.
My dad is tired.

Generally I would like to know any variation of "to be" which are used in common speech.

Answer

1) 그건 ~이다. (that is) when say something is something.
근건 책이다. (that is book.)
그건 물이다. (that is water.)
2) 그는 ~하다. (one is~) when say someone is Complements...
그는 피곤하다. (He is tired)
그는 행복하다. (He is happy)

In general, When speaking it depends on what kind of subj. it is things or it is having a willing.

Answer

In the view of Korean speaker, "to be" itself has a lot of meanings.
It would be nice if you provide some example sentences which you want to express in Korean.

집에서 편안하게 언어를 배울 수 있는 기회를 놓치지 마세요. 경험 많은 강사진을 살펴보고 지금 바로 첫 수업을 신청하세요!