1.prodigy n．奇迹(an extraordinary, marvelous, or unusual accomplishment, deed, or event);奇才(a highly talented child or youth)；奇观(sth. extraordinary or inexplicable)
例：A child prodigy, Clara Schumann developed into one of the greatest pianists of her time.
同根词：prodigious(a.惊人的;异常的；奇妙的)

2.professional a．专业的(characterized by or conforming to the technical or ethical standards of a profession)；职业的(of, relating to, or characteristic of a profession)；n．专业人员(one that is professional)
词根记忆：来自profession(n.职业；专业)
例：Women began to study history as professional historians.
派生词：professionally( ad.专业地：内行地)
同根词：professor(n．教授)

3.proficient a．熟练的，精通的（skillful）
词根记忆：pro(在前)+fic(做的)+ient--做在别人前面--熟练的
例：The linguist was proficient in five languages.
同根词：sufficient(a．足够的)；deficient(a.缺乏的)

4.profile n.剖面(a side or sectional elevation)；轮廓(outline);分布图(a set of data often in graphic form portraying the significant features of something)
词根记忆：pro(前面)+file（=fili线条）--前部的线条--轮廓
例：pollen profile花粉剖面//high profile高姿态//temperature profile温度曲线图

5.profitability n．赢利能力，收益性（ability to afford profits）
词根记忆：来自profit(n．利润，利益：v.获利，有益)
例：One study showed, for example, that acquiring firms were on average unable to maintain acquired firms' pre-merger levels of profitability.
同根词：profitable(a．有利可图的；有益的)

6.profitable a．有利可图的（offering profits）
词根记忆：来自profit(n．利益，利润；v．获利)
例：Winter wheat and spring wheat are usually about equally profitable.
派生词：profitably( ad.有利地，有益地)
同根词：nonprofit(a．非赢利的)

7.profound a．深刻的，意义深远的(far-reaching)
词根记忆：pro+found(底部)--探究到底部--深奥的
例：The fecundity effects may have the most profound impact on these plant species.
派生词：profundity(n．深度，深刻)

8.prognosis n.预后（对疾病的发作及结果的预言）(the prospect of recovery as anticipated from the usual course of disease)
词根记忆：pro(提前)+gnosis(知道)——先知道——预后
例：A prognosis is made and evidence supporting it is discussed.