词根sel,sul,sult = summon 召集词根rac = race 种族词根rol = ring,circle 圆，环,滚动词根du,dupl = two 二词根parl = 说,谈话词根 past = 喂养,牧羊人词根 phag = eat 吃词根 tuit,tut = look after,protect 照管,监护词根 crim,crimin = separate 分开词根 tent,tempt,emp,temp = to try 尝试,to touch 触摸词根 sort = kind（种类）词根 soph = wise,wisdom 聪明的,智慧词根 rot = revolve,wheel,turn 转,轮子,旋转词根 rept = to creep 爬行；蔓延词根 quit = free,release,release 自由，释放,免除词根 quer,quar= to complain 抱怨词根 plain,plaint = beat 打,to beat the breast 捶胸词根port = gate 门词根pur = pure 纯洁词根 ortho = straight 直的，right 正的