YOU SAID:

I am a 13 year old child Adolescents open the door.

INTO JAPANESE

私は13歳の子供青年がドアを開けています。

BACK INTO ENGLISH

I have a 13-year-old adolescent, opening the door.

INTO JAPANESE

私には13歳の青年がいて、ドアを開けています。

BACK INTO ENGLISH

I have a 13-year-old young man who is opening the door.

INTO JAPANESE

私にはドアを開けている13歳の若い男性がいます。

BACK INTO ENGLISH

I have a 13-year-old young man who is opening the door.