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關閉窗口 not...until用于強調句型的用法
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 not...until 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)
他妻子走了之后他才來。
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
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