YOU SAID:
batman and spiderman are not my friends
INTO JAPANESE
バットマンとスパイダーマンは私の友達ではありません
BACK INTO ENGLISH
Batman and Spiderman are not my friends
INTO JAPANESE
バットマンとスパイダーマンは私の友達ではない
BACK INTO ENGLISH
Batman and Spiderman are not my friends
You've done this before, haven't you.