That is until last week.为什么用until?

That is until last week.为什么用until? It is advised that the meeting ___ until next week. 为什么?It was not until last year that he ________. It is not until that That's what i thought until last It is until +从句+that造句 it is not until ...that...用法 until It is until……that It is not until ……that 分别是什么意 it is not until that 和it was not until that The factory is the one （that） we visited last week为什么一定要用tha It is not until midnight that he finished the report.为什么不填wh