YOU SAID:
I can't believe I am eight
INTO JAPANESE
私は8歳だとは信じられません
BACK INTO ENGLISH
I can't believe i'm 8
INTO JAPANESE
信じられないわ
BACK INTO ENGLISH
I can not believe it
INTO JAPANESE
信じられない
BACK INTO ENGLISH
[しんじられない] /incredible/unbelievable/
INTO JAPANESE
信じられない
BACK INTO ENGLISH
[しんじられない] /incredible/unbelievable/
That didn't even make that much sense in English.