YOU SAID:

if it was a snake it would have bit me

INTO JAPANESE

もしそれがヘビだったら、それは私を噛んでいただろう

BACK INTO ENGLISH

If it had been a snake, it would have bitten me.

INTO JAPANESE

もしヘビだったら、私を噛んでいただろう。

BACK INTO ENGLISH

If I had been a snake, I would have bitten him.

INTO JAPANESE

もし私がヘビだったら、彼を噛んでいただろうに。

BACK INTO ENGLISH

If I had been a snake, I would have bitten him.