금붕어가

In a sentence

• 금붕어가 물속에서 헤엄치고 있다.

  The goldfish is swimming in the water.

  Here, '금붕어가' is the subject performing the action of swimming, indicated by the predicate '헤엄치고 있다'.

• 금붕어가 물방울을 만든다.

  The goldfish creates bubbles.

  In this case, '금붕어가' is the subject that initiates the action of creating bubbles, highlighted by the verb '만든다'.

• 금붕어가 조용하다.

  The goldfish is quiet.

  Here, '금붕어가' is the subject described by the adjective '조용하다', which states a quality of the goldfish.