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　　2017年12月大学英语四级语法用法辨析汇总

　　not until/until两者皆可接延续性动词和暂短性动词.

　　not...until指的是“直到...才”的意思,如 I did not go home until my mother called me.

　　我直到我妈妈打电话给我才回家.

　　not until的倒装与强调结构

　　1.当Not until位于句首时,句子要倒装.其结构为:Not until+从句/表时间的词+助动词+(主句)主语+谓语+.如:

　　①Not until the teacher came in did the students stop talking.直到老师进来学生们才停止讲话.

　　②Not until next week will the sports meet be held.直到下周才开运动会.

　　2. not until的强调结构为:It is / was not until+从句/表时间的词+that+.

　　上面两句改为强调句为:

　　③It was not until the teacher came in that the students stopped talking.

　　④It is not until next week that the sports meet will be held.

　　直到我结婚的时候,我才有钱买了自己的房子.

　　It was not until I got married that I could afford to buy a house of my own.

　　而until指“直到”.例如：

　　Go alone the street until you see the traffic light.

　　往前走,直到你看见交通灯.