請問現在完成時的英文怎麽說，譬如過去完成時是：

來源: 於 2010-09-25 11:39:53 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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

那現在完成時是不是：present perfect tense?
請舉個例句，謝謝。