YOU SAID:

We should play card games upstairs with me, you and my brother.

INTO JAPANESE

私たち、あなたと私の兄弟と一緒に二階でトランプゲームをするべきです。

BACK INTO ENGLISH

We, you and my brothers should play card games on the second floor.

INTO JAPANESE

私たち、あなたと私の兄弟は2階でトランプゲームをするべきです。

BACK INTO ENGLISH

We, you and my brothers should play card games on the second floor.