YOU SAID:

Look at this stuff isn't it neat

INTO JAPANESE

このものを見てそれはきれいではない

BACK INTO ENGLISH

Look at this one and it is not clean

INTO JAPANESE

これを見てきれいじゃない

BACK INTO ENGLISH

It is not beautiful to see this

INTO JAPANESE

これを見るのはきれいではありません

BACK INTO ENGLISH

It is not beautiful to see this