【導語】英語語法讓很多學生都頭疼，因為複雜難懂的句式和片語有時難以記憶。為大家整理了英語語法大全，希望對同學們的.英語語法學習有所幫助。更多內容盡在。
有這樣一道考題，其中涉及了 not…until… 句型：
It was not __________ he took off his dark glasses __________ I realized he was a famous singer.
A. when，that B. until，that C. until，when D. when，then
此題選 B。考查 l 的強調結構，其基本句型為：
It is (was) not until (時間狀語) that (不用否定)
他妻子走了之後他才來。
正：He didn’t come until his wife left.
正：It was not until his wife left that he came.
直到雨停他們才出發。
正：They didn’t start until the rain stopped.
正：It was not until the rain stopped that they started.
請做以下各題：
1. It was not until midnight ________ the noise of the street stopped.
A. that B. this C. since D. at which
2. It was not _______1920 _______ regular radio broadcast began.
A. for，that B. until，that C. for，when D. until，when
3. It was not _______ you had explained how ________ I managed to do it.
A. for，that B. until，that C. for，when D. until，when
答案：1. A 2. B 3. B
