YOU SAID:

my dog is white when he's not dirty at all

INTO JAPANESE

私の犬は、彼が全く汚れていないときは白い

BACK INTO ENGLISH

My dog ​​is white when he is not dirty at all

INTO JAPANESE

私の犬は、彼が全く汚れていないときは白です

BACK INTO ENGLISH

My dog ​​is white when he is not dirty at all