YOU SAID:

If she don't buy me a pack of beer I am going to beat her

INTO JAPANESE

彼女が私にビールを1パック買ってくれないなら、私は彼女を殴るつもりだ

BACK INTO ENGLISH

If she won't buy me a pack of beer, I'm going to hit her.

INTO JAPANESE

もし彼女が私にビールを1パック買ってくれなかったら、私は彼女を殴るつもりです。

BACK INTO ENGLISH

If she doesn't buy me a pack of beer, I'm going to hit her.

INTO JAPANESE

もし彼女が私にビールを1パック買ってくれないなら、私は彼女を殴るつもりです。

BACK INTO ENGLISH

If she doesn't buy me a pack of beer, I'm going to hit her.