YOU SAID:
This is gonna be the best day of my life
INTO JAPANESE
これは私の人生の最高の日にするつもりです。
BACK INTO ENGLISH
This is going to be the best day of my life.
INTO JAPANESE
これは私の人生の最高の日にするつもりです。
BACK INTO ENGLISH
This is going to be the best day of my life.
That didn't even make that much sense in English.