YOU SAID:
I'm sure my father thinks I'm a mistake.
INTO JAPANESE
父は私が間違いだと思っているに違いない。
BACK INTO ENGLISH
My dad must think I'm wrong.
INTO JAPANESE
父は私が間違っていると思っているに違いない。
BACK INTO ENGLISH
My dad must think I'm wrong.
Come on, you can do better than that.