YOU SAID:

my hoverboat and hippo is gnawing at my oak tree and eels

INTO JAPANESE

私のホバーボートとカバは樫の木とウナギをかじっている

BACK INTO ENGLISH

My hoverboat and hippos are nibbling oaks and eels

INTO JAPANESE

私のホバーボートとカバはオークとウナギをかじっています

BACK INTO ENGLISH

My hoverboat and hippos are nibbling oaks and eels