YOU SAID:
you're as good as dead
INTO JAPANESE
あなたは死んだも同然
BACK INTO ENGLISH
You are dead as
INTO JAPANESE
あなたが死んでいます。
BACK INTO ENGLISH
You are dead.
INTO JAPANESE
あなたは、死んでいます。
BACK INTO ENGLISH
You are dead.
That didn't even make that much sense in English.