hard 比较级到底是harder 还是more hard

hard 比较级到底是harder 还是more hard hard的比较级是什么?是harder还是 more hard? 像work hard这一类词的比较级是怎样的?是more Word hard 还是work harder? 是more and more hard,还是more and more harder,还是more and hard you had better study hard还是harder? HARD比较级 hard的过去式是harder吗? work more hard ,work harder是不是都对? more hard and easy还是more hard and easier 努力工作的英语翻译到底是work hard 还是hard work? I think I should work ____(hard) at English填hard还是harder? work hard play harder翻译?