Unit1  a-ancient
Unit2  and-badly
Unit3  badminton-boarding pass
Unit4  boat-canal
Unit5  cancel-cinema
Unit6  circle-cool
Unit7  cooperate-delighted
Unit8  deliver-download
Unit9  downstairs-enquiry
Unit10  enter-female
Unit11  ferry-frozen
Unit12  fruit-gun
Unit13  gym-horror
Unit14  horse-invite
Unit15  involve-left-hand
Unit16  leg-mate
Unit17  material-mystery
Unit18  name-opinion
Unit19  opportunity-perhaps
Unit20  period-pound
Unit21  pour-railway
Unit22  rain-rider
Unit23  right-seldom
Unit24  select-slightly
Unit25  slim-state
Unit26  station-talented
Unit27  talk-tool
Unit28  tooth-university
Unit29  unkind-website
Unit30  wedding
参考答案
常见词根、前缀和后缀