It is not until 为什么不能用when?为什么不能理解为“当……时,还没到……”?如果是It is until能加when吗?

It is not until midnight that he finished the report.为什么不填when? It is/was not until...that从句,为什么从句不能用when引导 It is not until 为什么不能用when?为什么不能理解为“当……时,还没到……”?如果是It is until能加when吗? It is not until that it is not until ...that...用法 强调句 It is not until midnight that 还是 it is not until at midnight thatit is not until +被强调部分+that 被强调部分不是主语,宾语和状语吗?那为什么没有at? it is not until that 和it was not until that -----it is 9o'clock now.i must go.-----it's raining outside.( ) leave until stops.to not not to do not not 为什么选c stops 直到,2 o clock this morning that Mike came back home直到,用it is not until还是not until.为什么? be careful not to get off the bus until it stops.not为什么不放be后 It is not until that.(强调句)中not until算在句首吗,主句倒装吗? it is not until这个句型要倒装吗 love is not love ,until someone receives it It is some time before i realize the turth.为什么用before而不能用until It is until……that It is not until ……that 分别是什么意It is until……that It is not until ……that 如果until 后面接句子用不用倒装 be careful not to get off the bus ()it stops.为什么填until?when.before为什么不可以 It is recommended that the race ___C__ until all the preparations have been made.A.is not started B.will not be started C.not be started D.is not to be started请高手讲下以下4个答案,为什么要选C,A不可以吗.麻烦给讲的详细点,我 it was_back home after the experiment.为什么不选Cit was _____back home after the experiment.A not until midnight did he go B until midnight that he did not go C not until midnight that he went D until midnight when he did not go为什么不选C