Second
adj.第二次,此等的,再一个的 (the second) （有特指,用the)
eg.Her beautiful roses won the second prize at the flower show.
她那些美丽的玫瑰在花展上得了二等奖.
n.第二 (the second)
eg.The second round was a complete massacre.
第二个回合是十足的惨败.
n.片刻,秒(a second)
eg.The train will leave in a second.
列车马上要开了.
adv.第二,其次(second)
eg.Second,smoking is harmful also to your family members.
第二,吸烟也会给你的家人带来危害.
vt.支持,赞成,附和
eg.I second his motion that we should set up a special board to examine the problem.
他提议成立一个特别委员会来研究这个问题,我赞成.
建议LZ去研究下 a,an ,the用法会比较有帮助