YOU SAID:

I'd be a dead man if I didn't act fast.

INTO JAPANESE

速く行動しなければ、私は死んだ男になるでしょう。

BACK INTO ENGLISH

If I don't act fast, I'll be a dead man.

INTO JAPANESE

私が速く行動しなければ、私は死んだ男になります。

BACK INTO ENGLISH

If I don't act fast, I'll be a dead man.