YOU SAID:
my dog is white when he's not dirty
INTO JAPANESE
彼は汚れていないとき私の犬は白です
BACK INTO ENGLISH
My dog is white when he is not dirty
INTO JAPANESE
私の犬は彼が汚れていないときは白です
BACK INTO ENGLISH
My dog is white when he is not dirty
Come on, you can do better than that.