YOU SAID:
Dogs aren't firetrucks
INTO JAPANESE
犬は消防車ではない
BACK INTO ENGLISH
A dog is not a fire engine.
INTO JAPANESE
犬は消防車ではありません。
BACK INTO ENGLISH
The dog is not a fire engine.
INTO JAPANESE
その犬は消防車ではありません。
BACK INTO ENGLISH
The dog is not a fire engine.
That didn't even make that much sense in English.