nastolatek

In a sentence

• Nastolatek uczy się codziennie w szkole.

  The teenager studies at school every day.

  Here, 'nastolatek' is used to refer to a young person who is in their teenage years, highlighting their daily routine.

• Grupa nastolatków bawiła się na placu zabaw.

  A group of teenagers were playing in the playground.

  In this sentence, 'nastolatków' is the plural genitive form, indicating a group of young individuals in their teens.

• Czy ten nastolatek już skończył swoje zadanie?

  Has this teenager finished their task yet?

  The term 'nastolatek' directly identifies a single teenage person in the context of checking task completeness.