present 本身就是动词
例句
1、
One major problem did present itself， though.
不过，确实出现了一个重大问题。
2、
A further obstacle has presented itself， however.
然而，突然又出现了一个障碍。
3、
Children who have a positive self-image are less likely to present behaviour and discipline problems.
自我感觉良好的孩子较少出现行为和纪律上的问题。
present 形容词，在场的，到场的
与absent缺席是反义词
present名词，礼物，复数形式为presents
present动词，呈现，过去式/过去分词presented
