四六级考试

试题来源：大学三级(A)-123
【单选题】 It was not until dark ______ it was time to return home.
A．that he realized
B．that did he realize
C．when he realized
D．when did he realize

参考答案：A
网考网解析：
[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 was not 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... 查看试题解析出处>>