did not
- phrasal verb
- We did not receive your email until this morning.
Examples
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They did not expect the weather to change so suddenly.
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Sarah did not agree.
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He did not attend the meeting because he was feeling unwell.
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He did not come.
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He did not attend the meeting because he was feeling unwell.
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They did not expect the weather to change so suddenly.
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We did not receive your email until this morning.
Surface Forms
Morphology
The meaning is a straightforward negative construction: past auxiliary (did) + not yields denial, so a learner who knows 'do/did' and 'not' can derive that it denies or contradicts a statement. This is a regular grammatical composition (often used as an emphatic short reply) and is cross-linguistically common, not idiomatic.
Etymology
The phrase did not comes from using the past form of the helper verb did plus not to stop an action. Imagine did as a small helper that stands before the main verb and not as a stop sign that blocks it, so did not means 'didn't happen'.