I feel that this is a historic moment for our country. People often believe that they should use the indefinite article an in front of words like historic, horrific, or hotel. 历史现在时（historical present、historic present），或称戏剧现在时（dramatic present )、叙事现在时（narrative present）是指在叙述过去的事件时，使用现在时时态的情况.
King Ranch A Legendary Legacy of Texas Ranching History
Historic means ‘important or likely to be important in history’:
When the berlin wall came down, it was a historic occasion.
‘a historic event’ or ‘an historic event’?
