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not...until強調(diào)句型的運用說明

請看一道題：

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(diào)結構，其基本句型為：

It is (was) not until (時間狀語) that 從句(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(fā)。

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(www.52ysedu.com)：

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