YOU SAID:
What is the worst thing to happen to you?
INTO JAPANESE
あなたに起こる最悪の出来事は何ですか?
BACK INTO ENGLISH
What is the worst thing that could happen to you?
INTO JAPANESE
あなたに起こり得る最悪のことは何ですか?
BACK INTO ENGLISH
What is the worst thing that could happen to you?
That didn't even make that much sense in English.