work hard:努力工作,动词+副词,只做谓语
working hard:是wor hard 的动名词,可以做主语eg:working hard will bring you success
hard working=hard work:名词eg:hard work(working)leads to success
work hard:努力工作,动词+副词,只做谓语
working hard:是wor hard 的动名词,可以做主语eg:working hard will bring you success
hard working=hard work:名词eg:hard work(working)leads to success