It was not until dark ______ it was time to return home.

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问题 It was not until dark ______ it was time to return home.

选项 A、that he realized
B、that did he realize
C、when he realized
D、when did he realize

答案A

解析 本题考查“not…until”和强调句式“it+be+that/who…”的用法。not…until/till结构意为“直到……才……”,主句常用终止性动词(即非延续性动词),表示until/till所表示的时间一到,该动作就发生。如:Johnson wasnot able to return to his homeland until the war was over.(直到战争结束后约翰逊才得以回国。)同时还要注意本句为强调句式,由于不是强调人,因此该结构应为:It is/was not until…that…故选项A为正确答案。另外,not until放在句首时要用倒装语序。如:Not until the war was over was Jobnson ableto return to his homeland.
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