YOU SAID:

If I knew you were coming, I would have baked you a cake

INTO JAPANESE

もし君が来ると知っていたら、ケーキを焼いていただろう

BACK INTO ENGLISH

If I had known you were coming, I would have baked the cake.

INTO JAPANESE

君が来ると知っていたら、ケーキを焼いていただろうに。

BACK INTO ENGLISH

If I had known you were coming, I would have baked the cake.