1. A 职业的，专业的　of or working in one of the professions
2. 内行的，有经验的　showing the qualities of training of a member of a profession
3. A 有意的，故意的　intentional

　professional　可表示“有意的，故意的”，通常指在体育比赛中故意犯规。professional表示“职业的，专业的”“有意的，故意的”时，没有比较级和最高级。

　～ boxer〔footballer〕　职业拳击手〔足球运动员〕
　～ conduct　职业道德
　～ football〔tennis〕　职业足球赛〔网球赛〕
　～ foul　故意犯规
　～ man　专职的人
　～ photographer　职业摄影师
　～ standard　专业水平
　～ associations　专业协会
　extremely ～　相当精通
　turn ～　转入专业队

　She is a professional actress.　她是职业演员。
　You had better get professional advice before buying stocks.　你在买股票前，最好听听行家的意见。
　The magician performed his tricks with professional skill.　魔术师用熟练的技巧变着戏法。
　The footballer made a professional foul.　那位足球运动员故意犯规。
　The arson is professional.　这次放火是内行人干的。

1. C 具有某专业资格的人，专业人士　person qualified or employed in one of the professions
2. C 内行，专家　a person who has great experience and high professional standard
3. C 专门职业者，职业选手　a person who earns money by practicing a particular skill or sport

　need a ～　需要专业人士
　real ～　真正的专业人士

　I need a professional to sort out my finances.　我需要专业人士为我管理财务。
　She is a real professional.　她真内行。
　The professionals played football very well.　这些专业足球运动员踢得棒极了。

　［派生词］ professionalism n.职业特征，职业行为，专业技巧；专业人员的特质
　［同义词］ adj. expert, well-skilled
　［反义词］ adj. unprofessional