请问现在完成时的英文怎么说，譬如过去完成时是：

来源: 于 2010-09-25 11:39:53 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

The past perfect tense: The seminar had concluded before I got a chance to talk with Dr. Tran.

那现在完成时是不是：present perfect tense?
请举个例句，谢谢。