〜はずだ

How to form it

• Put the plain form before はずだ: 来(く)るはずだ, 着(つ)いているはずだ.
• Nouns take のはずだ and な-adjectives take なはずだ: 休(やす)みのはずだ, 静(しず)かなはずだ.
• はずだった means something was supposed to happen but did not.

Examples

Notes

• はず is about expectation, not duty. For "you should study", use 〜べき or ほうがいい.
• For "can't possibly be", use 〜はずがない.

Similar meaning

• 〜でしょう / 〜だろうprobably

  "Probably": a guess rather than a conclusion from facts.

• 〜かもしれないmight / maybe

  "Might": only a possibility.

• 〜に違(ちが)いないmust be

  "Must be": a strong personal conviction.