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