volv,volu,volut = to roll,to turntum = to swell（肿胀）tra,tract(treat) = to draw（拉拽）act,ag = to do,to drive （做，驱使）词根spon,spond,spons(spous) = to promise 承诺test = witness（证据）grad,gress(gred) = to go,to walk（走）plor = to weepvac(vas) = empty（空）terr = to frighten（使惊吓）terr = earth（地）mol,moll = to grind,grain,burden,heap,mollcrep = to rattlevoid = emptyvid ,vis = to look,to seerid,ris = to laugh（笑）men (mean) = to leadfac,front = face（面部，正面）,forehead（前额）lin,lign = linelec ( let ,lic,lig) = to entice