That's ～たはず with conditionals.I know 〜たはず usually indicate some fact is contrary to one's expectation.
So is "conditional + ～たはず" a fixed pattern used to express that someone has just remembered/recalled something should be the case?That's ～たはず with conditionals.
e.g.
彼がいたら試合に勝てたはずだ。
Thank you.思い出した！今日は結婚記念日だった！
言われてみれば明日は休みだった。
折紙 was considered the most capable in the unit by 真那 previously and this is still true now, so I thought ～だ should be used. But if 真那 is just referring to the previous occasion, then it seems also reasonable to use 〜だった.Considering the speaker is referring to events that have already taken place, the use of the past seems perfectly natural to me. Why exactly does it seem unusual to you?
My answer was about to your comment "I know ～たはず usually indicate some fact is contrary to one's expectation.", as I quoted. Thus, ～たはず in that meaning is when with conditionals, as in my first example. Your initial example and my rest two are not this ～たはず. "Conditional + ～た" can have the same meaning without はず.So is "conditional + ～たはず" a fixed pattern used to express that someone has just remembered/recalled something should be the case?
Which example do you refer to by "initial example"? Do you mean だが、士道に妹は一人しかいなかったはずだ。 is the "some fact is contrary to one's expectation." usage while 確か士道は養子だったはずだ is the "someone has just remembered/recalled something should be the case" usage?Your initial example
Toritoribe-san you don't mind telling me how one determines verbs of past tense should be or can be used for a present situation and a future situation as per your two given examples?思い出した！今日は結婚記念日だった！
言われてみれば明日は休みだった。
I appreciate your help and it does help. Thanks!The following is my interpretation of た's meanings.
1.recollection
...たしか士道は養子だったはずだ。
思い出した！今日は結婚記念日だった！
言われてみれば明日は休みだった。
2.subjunctive mood where the assumption is contrary to happened facts or reality.
彼がいたら試合に勝てたはずだ。
彼がいたら試合に勝てたのになあ。(In reality, we lost the game.)
彼がいると知っていたら、今日は来なかった。(In reality, I come here and find he is here)