是現在完成進行時，表示已經並正在進行的動作。

來源: viewfinder 於 2011-11-28 09:31:38 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.