比较多见的还有(1)以-ist结尾的,比如scientist, artist, dentist (2)以-an结尾的,比如historian, vegetarian (3)以-ee结尾的,与-er/or相反(主动被动),比如employee, trainee (4)以-ess结尾的,与-er/or相反(男女),比如waitress (4)以-boy, -girl, -man,-woman为词尾的复合词,比如policeman, cowboy等.