YOU SAID:
I want to kill my dad
INTO JAPANESE
私の父を殺したいです。
BACK INTO ENGLISH
You want to kill my father.
INTO JAPANESE
私の父を殺すためにします。
BACK INTO ENGLISH
To kill my father.
INTO JAPANESE
私の父を殺す。
BACK INTO ENGLISH
Kill my father.
INTO JAPANESE
私の父を殺します。
BACK INTO ENGLISH
Kill my father.
That didn't even make that much sense in English.