이게

In a sentence

• 이게 정말 네가 만든 거야?

  Is this really what you made?

  In this sentence, '이게' serves as the subject of the sentence, referring to an item being emphasized or questioned.

• 이게 그렇게 중요한 일이야?

  Is this such an important matter?

  Here, '이게' is used to highlight a specific matter or situation being discussed.

• 이게 바로 제가 찾고 있었던 책이에요.

  This is exactly the book I was looking for.

  '이게' functions as a demonstrative pronoun, pointing to the object being identified or clarified.