YOU SAID:
i love girls generation
INTO JAPANESE
私は女の子の世代が大好き
BACK INTO ENGLISH
I love girls generation
INTO JAPANESE
少女時代が大好き
BACK INTO ENGLISH
I love girls' days
INTO JAPANESE
女の子の日が大好き
BACK INTO ENGLISH
I love girls day
INTO JAPANESE
私は女の子の日が大好き
BACK INTO ENGLISH
I love girls day
That didn't even make that much sense in English.