YOU SAID:
My teacher is one of the worst teachers EVER!
INTO JAPANESE
私の先生はこれまでで最悪の先生の一人です!
BACK INTO ENGLISH
My teacher is one of the worst teachers ever!
INTO JAPANESE
私の先生は史上最悪の先生の一人です!
BACK INTO ENGLISH
My teacher is one of the worst teachers ever!
You've done this before, haven't you.