Meaning & usage
はず expresses the speaker's expectation that something is or should be the case, based on reasoning. It follows plain-form verbs and い-adjectives, な-adjectives and nouns with な, and combines with がない or もない to strongly deny that something could be true.
Example sentences 8
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そんなの、身体にとっていいはずがないじゃありませんか。
That can't be good for your health, can it?
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一週間でどれほどのことが学べるか、自分でもびっくりするはずだよ！
You'd be surprised what you can learn in a week.
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人前でそんなこと出来るはずもない。
There's no way I could do something like that in front of people.
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明日の今ごろはパリにいるはずだ。
We should be in Paris by this time tomorrow.
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本気のはずがないわ。
You cannot be serious.
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明かりがついているのだから、彼らが外出したはずがない。
They can't have gone out because the light's on.
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彼女は早く出たから今ごろはそこに着いているはずだ。
She should be there now because she left early.
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彼女はこの前英国に来てからすくなくとも３年にはなるはずだ。
It must be three years if a day since she was last in England.