单选题 You may not go out to play games ______ you have finished your work.
【正确答案】 C
【答案解析】[解析] 本题考查not……until结构用法。句意:你在做完作业前不许出去玩耍。not until在句中表示“到…时候才可以(做某事)”。 [知识点] until表示某一动作持续到某一时刻,如:We talked and talked until it was dawn.我们谈啊谈啊一直到天亮。not until表示直到某一时刻动作才 开始,如:He didn't open the door until he heard the shout.他直到听见 叫喊才打开门。