YOU SAID:
I saw my best friend walking down the street.
INTO JAPANESE
親友が通りを歩いているのを見た。
BACK INTO ENGLISH
I saw my best friend walking down the street.
INTO JAPANESE
親友が通りを歩いているのを見た。
BACK INTO ENGLISH
I saw my best friend walking down the street.
That didn't even make that much sense in English.