21.It was not until he arrived in class _____ realized he had forgotten his book.

It was not long until ... not ...until it was not until Not until句型转化 帮我写三组句子 30分 先送上not ...until it was not until Not until it was not until when...与it was not until that...区别,强调句型用哪个. it was not until.did.和it was not until .that.这两个有什么区别 请问是it was not until 1990s还是It was not until the 1990s it was not until 和 it was until 的区别,请详细一点. it is not until that 和it was not until that 21.It was not until he arrived in class _____ realized he had forgotten his book. it was not until--------------that/when 的区别如题 It was not until midnight did he come back. it was not until yeasterday to have we knew it.为何until不能换为till? It was not until .that.是句型,有没有It was not until.when.的形式,举个例句 It was not until the late sixteen hundreds that women began to perform professionally as dancers.it was not until not until ____ she wondered if she had made a mistake.a.Not until long afterwards thatb.Not long until afterwardsc.It was not until long afterwards thatd.It was long afterwards until 如何理解it was not until midnight when it was raining中when引导什么从句 It was_____I read the letter____I knew she was married.A until.whenB not until.thatC until.thatD not until.when说明理由,谢谢 是A还是C我搞不明白.　18.______ after his death that he was recognized as a great composer.　　A.It was not until B.It is until C.It was until D.Not until not until与not ...untill的区别it was not until midnight,lucy left.Lucy didn't leave until midnight.是一样的意思?