YOU SAID:
My mom thinks I'm a disappointment.
INTO JAPANESE
私のお母さんは私ががっかりだと思います。
BACK INTO ENGLISH
My mother thinks I am disappointed.
INTO JAPANESE
私の母は私ががっかりしていると思います。
BACK INTO ENGLISH
My mother thinks I am disappointed.
Okay, I get it, you like Translation Party.