I listened to the dialogue below;

Man : Miguel’s going away party is on Sunday afternoon, right?

Woman : Actually, it’s not until Monday.

It means that actually, it's Monday. But I can't understand why the woman's reply means 'Actually, it's Monday.'

'not until Monday' means all except Monday; see the line




the negative form of until Monday is 'not until Monday'; see the line

->->->until ~~~~~



So I guess that 'not until Monday' means the period '~~~~~'. Then the day of away party is Monday? Tuesday? Wednesday? Thursday? ...

I think I'm wrong. But I can't find the problem by myself.

Would you explain this?


'Not until' is a rather idiomatic expression.

The party is on Monday. This simply states a fact.

The party is not until Monday. This means the party is on Monday. However, the use of the expression adds some "tone" to the statement.

In your example, it suggests that there is some expectation that the party is before Monday, and corrects this expectation.

Alternately, it can suggest that there is impatience, ie someone wishes the party were before Monday.

"The party is not until Monday. I'm so excited, I want the weekend to go by so quickly!'

Best wishes,

Maybe the time of the party is not so long ,it is from the Sunday afternoon to the 1 o'clock of the Monday,which means the guests should leave before that time .just for your reference.
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