YOU SAID:

i will beat up my brother because he has stolen my cereal.

INTO JAPANESE

兄が私の穀物を盗んだので、私は兄を殴ります。

BACK INTO ENGLISH

My brother stole my grain, so I hit him.

INTO JAPANESE

兄が私の穀物を盗んだので、私は彼を殴りました。

BACK INTO ENGLISH

I hit him because my brother stole my grain.

INTO JAPANESE

兄が私の穀物を盗んだので私は彼を殴った。

BACK INTO ENGLISH

I hit him because my brother stole my grain.