〜はずだ
〜はずだ means should; be expected to. It is a JLPT N4 grammar point. 「〜はずだ」 is used when you expect something to be true based on information or a reason. It expresses an expectation with some basis, stronger than a simple guess. After nouns use 「のはず」, and after na-adjectives use 「なはず」.
Japanese sources describe it as 「理由から当然〜だと思う」.
〜はずだ examples
田中さんは九時に来るはずです。
Mr. Tanaka should come at nine.
この店は今日は休みのはずです。
This store should be closed today.
〜はずだ exercises
Pick what belongs in the parentheses. The answer is marked below.
山田さんはもう家に着いた（ ）。
- はずです ✓
- かどうか
- みたいに
- そうな
Yamada should have arrived home already.
この本は図書館にある（ ）。
- ような
- はずです ✓
- かもしれ
- でしょうか
This book should be in the library.
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