YOU SAID:

My cat is on the moon riding a sandwi

INTO JAPANESE

私の猫はサンドウィに乗って月の上にいます

BACK INTO ENGLISH

My cat is over the moon riding sandwi

INTO JAPANESE

私の猫はサンドウィに乗って月の上にあります

BACK INTO ENGLISH

My cat is over the moon riding sandwi