只作表语的形容词：well,unwell,ill,faint,poorly,afraid,alone,alike,alive,ashamed,asleep,awake,aware,certain,sure,due ,fond,ready,unable
只作定语的形容词：former,latter,inner,outer,upper,lower,elder,eldest,indoor,outdoor,inside,outside ,upstairs,downstairs,mere,outright,very,thorough,plain,complete,pure,perfect,daily,everyday,monthly,present,last,existing 或表示度量的复合形容词 eg:three-year-old