做名词时加of
eg1.Proofofhealthinsurance.健康证明书.
2.Britain'sNationalHealthServiceagrees:havingstudiedtheavailableresearch,itfindsnoproofofharmfromturbines.英国国民保健体系赞同道:经对相关调查进行研究,并未发现涡轮机产生危害的证据.
3.Theweddingprayerbook,forexample,istangibleproofofmyparentsspiritualityandreligiousbeliefs.结婚用的祈祷书就是有形的证据,证明了父母精神的纯洁和宗教信仰.
做动词时直接加宾语,因为它是及物动词.