Formation
Plain form + はずだ (noun: の / な-adj: な)
Explanation
Negative: ～はずがない = can't possibly. ～はずだった = was supposed to.
Examples (例文)
- 彼はもう着いているはずです。 — He should have already arrived.
- こんな簡単な問題が解けないはずがない。 — There's no way he can't solve such an easy problem.
- 会議は三時のはずだった。 — The meeting was supposed to be at 3.