用過去式是虛擬語氣，就好像

"It's time we met."  (我們早該碰麵了！）

The verb "met" is in the subjunctive mood.  參見：

http://www.english-for-students.com/Subjunctive-Mood.html

Sentences starting with ‘it is time’ indicate that it is already late for taking the indicated action.

Other Examples: 

• The match will commence at 10o’clock and it is time you got ready. (Not ‘it is time you get ready)
• It is already half past midnight, and it is time we returned home. (Not ‘it is time we return home)

這也就是為什麽最後一句有人英語翻成：It is time it was time.

所有跟帖： 

• 謝謝，學的都忘記了 -LinMu- ♂ (0 bytes) () 06/18/2021 postreply 05:31:15