YOU SAID:
My brother won't let me play his game.
INTO JAPANESE
兄は私に彼のゲームをさせないでくれ。
BACK INTO ENGLISH
My brother shouldn't let me play his game.
INTO JAPANESE
私の兄は私に彼のゲームをさせるべきではありません。
BACK INTO ENGLISH
My brother shouldn't let me play his game.
Okay, I get it, you like Translation Party.